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-rw-r--r--fs/gfs2/Kconfig2
-rw-r--r--fs/gfs2/acl.c357
-rw-r--r--fs/gfs2/acl.h24
-rw-r--r--fs/gfs2/aops.c20
-rw-r--r--fs/gfs2/dir.c34
-rw-r--r--fs/gfs2/glock.c31
-rw-r--r--fs/gfs2/glock.h9
-rw-r--r--fs/gfs2/glops.c5
-rw-r--r--fs/gfs2/incore.h5
-rw-r--r--fs/gfs2/inode.c4
-rw-r--r--fs/gfs2/log.c2
-rw-r--r--fs/gfs2/lops.c4
-rw-r--r--fs/gfs2/ops_fstype.c154
-rw-r--r--fs/gfs2/quota.c393
-rw-r--r--fs/gfs2/quota.h5
-rw-r--r--fs/gfs2/recovery.c2
-rw-r--r--fs/gfs2/rgrp.c14
-rw-r--r--fs/gfs2/super.c110
-rw-r--r--fs/gfs2/super.h4
-rw-r--r--fs/gfs2/sys.c14
-rw-r--r--fs/gfs2/xattr.c74
-rw-r--r--fs/gfs2/xattr.h8
-rw-r--r--fs/quota/Kconfig2
-rw-r--r--fs/quota/dquot.c93
-rw-r--r--fs/quota/quota.c93
-rw-r--r--fs/xattr_acl.c2
26 files changed, 961 insertions, 504 deletions
diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig
index 5971359d2090..4dcddf83326f 100644
--- a/fs/gfs2/Kconfig
+++ b/fs/gfs2/Kconfig
@@ -8,6 +8,8 @@ config GFS2_FS
select FS_POSIX_ACL
select CRC32
select SLOW_WORK
+ select QUOTA
+ select QUOTACTL
help
A cluster filesystem.
diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c
index 3fc4e3ac7d84..3eb1ea846173 100644
--- a/fs/gfs2/acl.c
+++ b/fs/gfs2/acl.c
@@ -12,6 +12,7 @@
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
+#include <linux/xattr.h>
#include <linux/posix_acl.h>
#include <linux/posix_acl_xattr.h>
#include <linux/gfs2_ondisk.h>
@@ -26,108 +27,44 @@
#include "trans.h"
#include "util.h"
-#define ACL_ACCESS 1
-#define ACL_DEFAULT 0
-
-int gfs2_acl_validate_set(struct gfs2_inode *ip, int access,
- struct gfs2_ea_request *er, int *remove, mode_t *mode)
+static const char *gfs2_acl_name(int type)
{
- struct posix_acl *acl;
- int error;
-
- error = gfs2_acl_validate_remove(ip, access);
- if (error)
- return error;
-
- if (!er->er_data)
- return -EINVAL;
-
- acl = posix_acl_from_xattr(er->er_data, er->er_data_len);
- if (IS_ERR(acl))
- return PTR_ERR(acl);
- if (!acl) {
- *remove = 1;
- return 0;
- }
-
- error = posix_acl_valid(acl);
- if (error)
- goto out;
-
- if (access) {
- error = posix_acl_equiv_mode(acl, mode);
- if (!error)
- *remove = 1;
- else if (error > 0)
- error = 0;
+ switch (type) {
+ case ACL_TYPE_ACCESS:
+ return GFS2_POSIX_ACL_ACCESS;
+ case ACL_TYPE_DEFAULT:
+ return GFS2_POSIX_ACL_DEFAULT;
}
-
-out:
- posix_acl_release(acl);
- return error;
-}
-
-int gfs2_acl_validate_remove(struct gfs2_inode *ip, int access)
-{
- if (!GFS2_SB(&ip->i_inode)->sd_args.ar_posix_acl)
- return -EOPNOTSUPP;
- if (!is_owner_or_cap(&ip->i_inode))
- return -EPERM;
- if (S_ISLNK(ip->i_inode.i_mode))
- return -EOPNOTSUPP;
- if (!access && !S_ISDIR(ip->i_inode.i_mode))
- return -EACCES;
-
- return 0;
+ return NULL;
}
-static int acl_get(struct gfs2_inode *ip, const char *name,
- struct posix_acl **acl, struct gfs2_ea_location *el,
- char **datap, unsigned int *lenp)
+static struct posix_acl *gfs2_acl_get(struct gfs2_inode *ip, int type)
{
+ struct posix_acl *acl;
+ const char *name;
char *data;
- unsigned int len;
- int error;
-
- el->el_bh = NULL;
+ int len;
if (!ip->i_eattr)
- return 0;
-
- error = gfs2_ea_find(ip, GFS2_EATYPE_SYS, name, el);
- if (error)
- return error;
- if (!el->el_ea)
- return 0;
- if (!GFS2_EA_DATA_LEN(el->el_ea))
- goto out;
+ return NULL;
- len = GFS2_EA_DATA_LEN(el->el_ea);
- data = kmalloc(len, GFP_NOFS);
- error = -ENOMEM;
- if (!data)
- goto out;
+ acl = get_cached_acl(&ip->i_inode, type);
+ if (acl != ACL_NOT_CACHED)
+ return acl;
- error = gfs2_ea_get_copy(ip, el, data, len);
- if (error < 0)
- goto out_kfree;
- error = 0;
+ name = gfs2_acl_name(type);
+ if (name == NULL)
+ return ERR_PTR(-EINVAL);
- if (acl) {
- *acl = posix_acl_from_xattr(data, len);
- if (IS_ERR(*acl))
- error = PTR_ERR(*acl);
- }
+ len = gfs2_xattr_acl_get(ip, name, &data);
+ if (len < 0)
+ return ERR_PTR(len);
+ if (len == 0)
+ return NULL;
-out_kfree:
- if (error || !datap) {
- kfree(data);
- } else {
- *datap = data;
- *lenp = len;
- }
-out:
- return error;
+ acl = posix_acl_from_xattr(data, len);
+ kfree(data);
+ return acl;
}
/**
@@ -140,14 +77,12 @@ out:
int gfs2_check_acl(struct inode *inode, int mask)
{
- struct gfs2_ea_location el;
- struct posix_acl *acl = NULL;
+ struct posix_acl *acl;
int error;
- error = acl_get(GFS2_I(inode), GFS2_POSIX_ACL_ACCESS, &acl, &el, NULL, NULL);
- brelse(el.el_bh);
- if (error)
- return error;
+ acl = gfs2_acl_get(GFS2_I(inode), ACL_TYPE_ACCESS);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
if (acl) {
error = posix_acl_permission(inode, acl, mask);
@@ -158,57 +93,75 @@ int gfs2_check_acl(struct inode *inode, int mask)
return -EAGAIN;
}
-static int munge_mode(struct gfs2_inode *ip, mode_t mode)
+static int gfs2_set_mode(struct inode *inode, mode_t mode)
{
- struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct buffer_head *dibh;
- int error;
+ int error = 0;
- error = gfs2_trans_begin(sdp, RES_DINODE, 0);
- if (error)
- return error;
+ if (mode != inode->i_mode) {
+ struct iattr iattr;
- error = gfs2_meta_inode_buffer(ip, &dibh);
- if (!error) {
- gfs2_assert_withdraw(sdp,
- (ip->i_inode.i_mode & S_IFMT) == (mode & S_IFMT));
- ip->i_inode.i_mode = mode;
- gfs2_trans_add_bh(ip->i_gl, dibh, 1);
- gfs2_dinode_out(ip, dibh->b_data);
- brelse(dibh);
+ iattr.ia_valid = ATTR_MODE;
+ iattr.ia_mode = mode;
+
+ error = gfs2_setattr_simple(GFS2_I(inode), &iattr);
}
- gfs2_trans_end(sdp);
+ return error;
+}
+
+static int gfs2_acl_set(struct inode *inode, int type, struct posix_acl *acl)
+{
+ int error;
+ int len;
+ char *data;
+ const char *name = gfs2_acl_name(type);
- return 0;
+ BUG_ON(name == NULL);
+ len = posix_acl_to_xattr(acl, NULL, 0);
+ if (len == 0)
+ return 0;
+ data = kmalloc(len, GFP_NOFS);
+ if (data == NULL)
+ return -ENOMEM;
+ error = posix_acl_to_xattr(acl, data, len);
+ if (error < 0)
+ goto out;
+ error = gfs2_xattr_set(inode, GFS2_EATYPE_SYS, name, data, len, 0);
+ if (!error)
+ set_cached_acl(inode, type, acl);
+out:
+ kfree(data);
+ return error;
}
-int gfs2_acl_create(struct gfs2_inode *dip, struct gfs2_inode *ip)
+int gfs2_acl_create(struct gfs2_inode *dip, struct inode *inode)
{
- struct gfs2_ea_location el;
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
- struct posix_acl *acl = NULL, *clone;
- mode_t mode = ip->i_inode.i_mode;
- char *data = NULL;
- unsigned int len;
- int error;
+ struct posix_acl *acl, *clone;
+ mode_t mode = inode->i_mode;
+ int error = 0;
if (!sdp->sd_args.ar_posix_acl)
return 0;
- if (S_ISLNK(ip->i_inode.i_mode))
+ if (S_ISLNK(inode->i_mode))
return 0;
- error = acl_get(dip, GFS2_POSIX_ACL_DEFAULT, &acl, &el, &data, &len);
- brelse(el.el_bh);
- if (error)
- return error;
+ acl = gfs2_acl_get(dip, ACL_TYPE_DEFAULT);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
if (!acl) {
mode &= ~current_umask();
- if (mode != ip->i_inode.i_mode)
- error = munge_mode(ip, mode);
+ if (mode != inode->i_mode)
+ error = gfs2_set_mode(inode, mode);
return error;
}
+ if (S_ISDIR(inode->i_mode)) {
+ error = gfs2_acl_set(inode, ACL_TYPE_DEFAULT, acl);
+ if (error)
+ goto out;
+ }
+
clone = posix_acl_clone(acl, GFP_NOFS);
error = -ENOMEM;
if (!clone)
@@ -216,43 +169,32 @@ int gfs2_acl_create(struct gfs2_inode *dip, struct gfs2_inode *ip)
posix_acl_release(acl);
acl = clone;
- if (S_ISDIR(ip->i_inode.i_mode)) {
- error = gfs2_xattr_set(&ip->i_inode, GFS2_EATYPE_SYS,
- GFS2_POSIX_ACL_DEFAULT, data, len, 0);
- if (error)
- goto out;
- }
-
error = posix_acl_create_masq(acl, &mode);
if (error < 0)
goto out;
if (error == 0)
goto munge;
- posix_acl_to_xattr(acl, data, len);
- error = gfs2_xattr_set(&ip->i_inode, GFS2_EATYPE_SYS,
- GFS2_POSIX_ACL_ACCESS, data, len, 0);
+ error = gfs2_acl_set(inode, ACL_TYPE_ACCESS, acl);
if (error)
goto out;
munge:
- error = munge_mode(ip, mode);
+ error = gfs2_set_mode(inode, mode);
out:
posix_acl_release(acl);
- kfree(data);
return error;
}
int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr)
{
- struct posix_acl *acl = NULL, *clone;
- struct gfs2_ea_location el;
+ struct posix_acl *acl, *clone;
char *data;
unsigned int len;
int error;
- error = acl_get(ip, GFS2_POSIX_ACL_ACCESS, &acl, &el, &data, &len);
- if (error)
- goto out_brelse;
+ acl = gfs2_acl_get(ip, ACL_TYPE_ACCESS);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
if (!acl)
return gfs2_setattr_simple(ip, attr);
@@ -265,15 +207,134 @@ int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr)
error = posix_acl_chmod_masq(acl, attr->ia_mode);
if (!error) {
+ len = posix_acl_to_xattr(acl, NULL, 0);
+ data = kmalloc(len, GFP_NOFS);
+ error = -ENOMEM;
+ if (data == NULL)
+ goto out;
posix_acl_to_xattr(acl, data, len);
- error = gfs2_ea_acl_chmod(ip, &el, attr, data);
+ error = gfs2_xattr_acl_chmod(ip, attr, data);
+ kfree(data);
+ set_cached_acl(&ip->i_inode, ACL_TYPE_ACCESS, acl);
}
out:
posix_acl_release(acl);
- kfree(data);
-out_brelse:
- brelse(el.el_bh);
return error;
}
+static int gfs2_acl_type(const char *name)
+{
+ if (strcmp(name, GFS2_POSIX_ACL_ACCESS) == 0)
+ return ACL_TYPE_ACCESS;
+ if (strcmp(name, GFS2_POSIX_ACL_DEFAULT) == 0)
+ return ACL_TYPE_DEFAULT;
+ return -EINVAL;
+}
+
+static int gfs2_xattr_system_get(struct inode *inode, const char *name,
+ void *buffer, size_t size)
+{
+ struct posix_acl *acl;
+ int type;
+ int error;
+
+ type = gfs2_acl_type(name);
+ if (type < 0)
+ return type;
+
+ acl = gfs2_acl_get(GFS2_I(inode), type);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+ if (acl == NULL)
+ return -ENODATA;
+
+ error = posix_acl_to_xattr(acl, buffer, size);
+ posix_acl_release(acl);
+
+ return error;
+}
+
+static int gfs2_xattr_system_set(struct inode *inode, const char *name,
+ const void *value, size_t size, int flags)
+{
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
+ struct posix_acl *acl = NULL;
+ int error = 0, type;
+
+ if (!sdp->sd_args.ar_posix_acl)
+ return -EOPNOTSUPP;
+
+ type = gfs2_acl_type(name);
+ if (type < 0)
+ return type;
+ if (flags & XATTR_CREATE)
+ return -EINVAL;
+ if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
+ return value ? -EACCES : 0;
+ if ((current_fsuid() != inode->i_uid) && !capable(CAP_FOWNER))
+ return -EPERM;
+ if (S_ISLNK(inode->i_mode))
+ return -EOPNOTSUPP;
+
+ if (!value)
+ goto set_acl;
+
+ acl = posix_acl_from_xattr(value, size);
+ if (!acl) {
+ /*
+ * acl_set_file(3) may request that we set default ACLs with
+ * zero length -- defend (gracefully) against that here.
+ */
+ goto out;
+ }
+ if (IS_ERR(acl)) {
+ error = PTR_ERR(acl);
+ goto out;
+ }
+
+ error = posix_acl_valid(acl);
+ if (error)
+ goto out_release;
+
+ error = -EINVAL;
+ if (acl->a_count > GFS2_ACL_MAX_ENTRIES)
+ goto out_release;
+
+ if (type == ACL_TYPE_ACCESS) {
+ mode_t mode = inode->i_mode;
+ error = posix_acl_equiv_mode(acl, &mode);
+
+ if (error <= 0) {
+ posix_acl_release(acl);
+ acl = NULL;
+
+ if (error < 0)
+ return error;
+ }
+
+ error = gfs2_set_mode(inode, mode);
+ if (error)
+ goto out_release;
+ }
+
+set_acl:
+ error = gfs2_xattr_set(inode, GFS2_EATYPE_SYS, name, value, size, 0);
+ if (!error) {
+ if (acl)
+ set_cached_acl(inode, type, acl);
+ else
+ forget_cached_acl(inode, type);
+ }
+out_release:
+ posix_acl_release(acl);
+out:
+ return error;
+}
+
+struct xattr_handler gfs2_xattr_system_handler = {
+ .prefix = XATTR_SYSTEM_PREFIX,
+ .get = gfs2_xattr_system_get,
+ .set = gfs2_xattr_system_set,
+};
+
diff --git a/fs/gfs2/acl.h b/fs/gfs2/acl.h
index 6751930bfb64..9306a2e6620c 100644
--- a/fs/gfs2/acl.h
+++ b/fs/gfs2/acl.h
@@ -13,26 +13,12 @@
#include "incore.h"
#define GFS2_POSIX_ACL_ACCESS "posix_acl_access"
-#define GFS2_POSIX_ACL_ACCESS_LEN 16
#define GFS2_POSIX_ACL_DEFAULT "posix_acl_default"
-#define GFS2_POSIX_ACL_DEFAULT_LEN 17
+#define GFS2_ACL_MAX_ENTRIES 25
-#define GFS2_ACL_IS_ACCESS(name, len) \
- ((len) == GFS2_POSIX_ACL_ACCESS_LEN && \
- !memcmp(GFS2_POSIX_ACL_ACCESS, (name), (len)))
-
-#define GFS2_ACL_IS_DEFAULT(name, len) \
- ((len) == GFS2_POSIX_ACL_DEFAULT_LEN && \
- !memcmp(GFS2_POSIX_ACL_DEFAULT, (name), (len)))
-
-struct gfs2_ea_request;
-
-int gfs2_acl_validate_set(struct gfs2_inode *ip, int access,
- struct gfs2_ea_request *er,
- int *remove, mode_t *mode);
-int gfs2_acl_validate_remove(struct gfs2_inode *ip, int access);
-int gfs2_check_acl(struct inode *inode, int mask);
-int gfs2_acl_create(struct gfs2_inode *dip, struct gfs2_inode *ip);
-int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr);
+extern int gfs2_check_acl(struct inode *inode, int mask);
+extern int gfs2_acl_create(struct gfs2_inode *dip, struct inode *inode);
+extern int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr);
+extern struct xattr_handler gfs2_xattr_system_handler;
#endif /* __ACL_DOT_H__ */
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 694b5d48f036..7b8da9415267 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -269,7 +269,6 @@ static int gfs2_write_jdata_pagevec(struct address_space *mapping,
pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT;
unsigned offset = i_size & (PAGE_CACHE_SIZE-1);
unsigned nrblocks = nr_pages * (PAGE_CACHE_SIZE/inode->i_sb->s_blocksize);
- struct backing_dev_info *bdi = mapping->backing_dev_info;
int i;
int ret;
@@ -313,11 +312,6 @@ static int gfs2_write_jdata_pagevec(struct address_space *mapping,
if (ret || (--(wbc->nr_to_write) <= 0))
ret = 1;
- if (wbc->nonblocking && bdi_write_congested(bdi)) {
- wbc->encountered_congestion = 1;
- ret = 1;
- }
-
}
gfs2_trans_end(sdp);
return ret;
@@ -338,7 +332,6 @@ static int gfs2_write_jdata_pagevec(struct address_space *mapping,
static int gfs2_write_cache_jdata(struct address_space *mapping,
struct writeback_control *wbc)
{
- struct backing_dev_info *bdi = mapping->backing_dev_info;
int ret = 0;
int done = 0;
struct pagevec pvec;
@@ -348,11 +341,6 @@ static int gfs2_write_cache_jdata(struct address_space *mapping,
int scanned = 0;
int range_whole = 0;
- if (wbc->nonblocking && bdi_write_congested(bdi)) {
- wbc->encountered_congestion = 1;
- return 0;
- }
-
pagevec_init(&pvec, 0);
if (wbc->range_cyclic) {
index = mapping->writeback_index; /* Start from prev offset */
@@ -819,8 +807,10 @@ static int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh,
mark_inode_dirty(inode);
}
- if (inode == sdp->sd_rindex)
+ if (inode == sdp->sd_rindex) {
adjust_fs_space(inode);
+ ip->i_gh.gh_flags |= GL_NOCACHE;
+ }
brelse(dibh);
gfs2_trans_end(sdp);
@@ -889,8 +879,10 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
mark_inode_dirty(inode);
}
- if (inode == sdp->sd_rindex)
+ if (inode == sdp->sd_rindex) {
adjust_fs_space(inode);
+ ip->i_gh.gh_flags |= GL_NOCACHE;
+ }
brelse(dibh);
gfs2_trans_end(sdp);
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index 297d7e5cebad..25fddc100f18 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -525,38 +525,6 @@ consist_inode:
return ERR_PTR(-EIO);
}
-
-/**
- * dirent_first - Return the first dirent
- * @dip: the directory
- * @bh: The buffer
- * @dent: Pointer to list of dirents
- *
- * return first dirent whether bh points to leaf or stuffed dinode
- *
- * Returns: IS_LEAF, IS_DINODE, or -errno
- */
-
-static int dirent_first(struct gfs2_inode *dip, struct buffer_head *bh,
- struct gfs2_dirent **dent)
-{
- struct gfs2_meta_header *h = (struct gfs2_meta_header *)bh->b_data;
-
- if (be32_to_cpu(h->mh_type) == GFS2_METATYPE_LF) {
- if (gfs2_meta_check(GFS2_SB(&dip->i_inode), bh))
- return -EIO;
- *dent = (struct gfs2_dirent *)(bh->b_data +
- sizeof(struct gfs2_leaf));
- return IS_LEAF;
- } else {
- if (gfs2_metatype_check(GFS2_SB(&dip->i_inode), bh, GFS2_METATYPE_DI))
- return -EIO;
- *dent = (struct gfs2_dirent *)(bh->b_data +
- sizeof(struct gfs2_dinode));
- return IS_DINODE;
- }
-}
-
static int dirent_check_reclen(struct gfs2_inode *dip,
const struct gfs2_dirent *d, const void *end_p)
{
@@ -1006,7 +974,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
divider = (start + half_len) << (32 - dip->i_depth);
/* Copy the entries */
- dirent_first(dip, obh, &dent);
+ dent = (struct gfs2_dirent *)(obh->b_data + sizeof(struct gfs2_leaf));
do {
next = dent;
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 8b674b1f3a55..f455a03a09e2 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -241,15 +241,14 @@ int gfs2_glock_put(struct gfs2_glock *gl)
int rv = 0;
write_lock(gl_lock_addr(gl->gl_hash));
- if (atomic_dec_and_test(&gl->gl_ref)) {
+ if (atomic_dec_and_lock(&gl->gl_ref, &lru_lock)) {
hlist_del(&gl->gl_list);
- write_unlock(gl_lock_addr(gl->gl_hash));
- spin_lock(&lru_lock);
if (!list_empty(&gl->gl_lru)) {
list_del_init(&gl->gl_lru);
atomic_dec(&lru_count);
}
spin_unlock(&lru_lock);
+ write_unlock(gl_lock_addr(gl->gl_hash));
GLOCK_BUG_ON(gl, !list_empty(&gl->gl_holders));
glock_free(gl);
rv = 1;
@@ -513,7 +512,6 @@ retry:
GLOCK_BUG_ON(gl, 1);
}
spin_unlock(&gl->gl_spin);
- gfs2_glock_put(gl);
return;
}
@@ -524,8 +522,6 @@ retry:
if (glops->go_xmote_bh) {
spin_unlock(&gl->gl_spin);
rv = glops->go_xmote_bh(gl, gh);
- if (rv == -EAGAIN)
- return;
spin_lock(&gl->gl_spin);
if (rv) {
do_error(gl, rv);
@@ -540,7 +536,6 @@ out:
clear_bit(GLF_LOCK, &gl->gl_flags);
out_locked:
spin_unlock(&gl->gl_spin);
- gfs2_glock_put(gl);
}
static unsigned int gfs2_lm_lock(struct gfs2_sbd *sdp, void *lock,
@@ -600,7 +595,6 @@ __acquires(&gl->gl_spin)
if (!(ret & LM_OUT_ASYNC)) {
finish_xmote(gl, ret);
- gfs2_glock_hold(gl);
if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
gfs2_glock_put(gl);
} else {
@@ -672,12 +666,17 @@ out:
return;
out_sched:
+ clear_bit(GLF_LOCK, &gl->gl_flags);
+ smp_mb__after_clear_bit();
gfs2_glock_hold(gl);
if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
gfs2_glock_put_nolock(gl);
+ return;
+
out_unlock:
clear_bit(GLF_LOCK, &gl->gl_flags);
- goto out;
+ smp_mb__after_clear_bit();
+ return;
}
static void delete_work_func(struct work_struct *work)
@@ -707,9 +706,12 @@ static void glock_work_func(struct work_struct *work)
{
unsigned long delay = 0;
struct gfs2_glock *gl = container_of(work, struct gfs2_glock, gl_work.work);
+ int drop_ref = 0;
- if (test_and_clear_bit(GLF_REPLY_PENDING, &gl->gl_flags))
+ if (test_and_clear_bit(GLF_REPLY_PENDING, &gl->gl_flags)) {
finish_xmote(gl, gl->gl_reply);
+ drop_ref = 1;
+ }
down_read(&gfs2_umount_flush_sem);
spin_lock(&gl->gl_spin);
if (test_and_clear_bit(GLF_PENDING_DEMOTE, &gl->gl_flags) &&
@@ -727,6 +729,8 @@ static void glock_work_func(struct work_struct *work)
if (!delay ||
queue_delayed_work(glock_workqueue, &gl->gl_work, delay) == 0)
gfs2_glock_put(gl);
+ if (drop_ref)
+ gfs2_glock_put(gl);
}
/**
@@ -1361,10 +1365,6 @@ static int gfs2_shrink_glock_memory(int nr, gfp_t gfp_mask)
list_del_init(&gl->gl_lru);
atomic_dec(&lru_count);
- /* Check if glock is about to be freed */
- if (atomic_read(&gl->gl_ref) == 0)
- continue;
-
/* Test for being demotable */
if (!test_and_set_bit(GLF_LOCK, &gl->gl_flags)) {
gfs2_glock_hold(gl);
@@ -1375,10 +1375,11 @@ static int gfs2_shrink_glock_memory(int nr, gfp_t gfp_mask)
handle_callback(gl, LM_ST_UNLOCKED, 0);
nr--;
}
+ clear_bit(GLF_LOCK, &gl->gl_flags);
+ smp_mb__after_clear_bit();
if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
gfs2_glock_put_nolock(gl);
spin_unlock(&gl->gl_spin);
- clear_bit(GLF_LOCK, &gl->gl_flags);
spin_lock(&lru_lock);
continue;
}
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index c609894ec0d0..13f0bd228132 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -180,15 +180,6 @@ static inline int gfs2_glock_is_held_shrd(struct gfs2_glock *gl)
return gl->gl_state == LM_ST_SHARED;
}
-static inline int gfs2_glock_is_blocking(struct gfs2_glock *gl)
-{
- int ret;
- spin_lock(&gl->gl_spin);
- ret = test_bit(GLF_DEMOTE, &gl->gl_flags);
- spin_unlock(&gl->gl_spin);
- return ret;
-}
-
int gfs2_glock_get(struct gfs2_sbd *sdp,
u64 number, const struct gfs2_glock_operations *glops,
int create, struct gfs2_glock **glp);
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 6985eef06c39..78554acc0605 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -13,6 +13,7 @@
#include <linux/buffer_head.h>
#include <linux/gfs2_ondisk.h>
#include <linux/bio.h>
+#include <linux/posix_acl.h>
#include "gfs2.h"
#include "incore.h"
@@ -184,8 +185,10 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags)
if (flags & DIO_METADATA) {
struct address_space *mapping = gl->gl_aspace->i_mapping;
truncate_inode_pages(mapping, 0);
- if (ip)
+ if (ip) {
set_bit(GIF_INVALID, &ip->i_flags);
+ forget_all_cached_acls(&ip->i_inode);
+ }
}
if (ip == GFS2_I(gl->gl_sbd->sd_rindex))
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 6edb423f90b3..4792200978c8 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -429,7 +429,11 @@ struct gfs2_args {
unsigned int ar_meta:1; /* mount metafs */
unsigned int ar_discard:1; /* discard requests */
unsigned int ar_errors:2; /* errors=withdraw | panic */
+ unsigned int ar_nobarrier:1; /* do not send barriers */
int ar_commit; /* Commit interval */
+ int ar_statfs_quantum; /* The fast statfs interval */
+ int ar_quota_quantum; /* The quota interval */
+ int ar_statfs_percent; /* The % change to force sync */
};
struct gfs2_tune {
@@ -558,6 +562,7 @@ struct gfs2_sbd {
spinlock_t sd_statfs_spin;
struct gfs2_statfs_change_host sd_statfs_master;
struct gfs2_statfs_change_host sd_statfs_local;
+ int sd_statfs_force_sync;
/* Resource group stuff */
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index fb15d3b1f409..26ba2a4c4a2d 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -871,7 +871,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
if (error)
goto fail_gunlock2;
- error = gfs2_acl_create(dip, GFS2_I(inode));
+ error = gfs2_acl_create(dip, inode);
if (error)
goto fail_gunlock2;
@@ -947,9 +947,7 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI);
- str->di_header.__pad0 = 0;
str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI);
- str->di_header.__pad1 = 0;
str->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 13c6237c5f67..4511b08fc451 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -596,7 +596,9 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull)
memset(lh, 0, sizeof(struct gfs2_log_header));
lh->lh_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
lh->lh_header.mh_type = cpu_to_be32(GFS2_METATYPE_LH);
+ lh->lh_header.__pad0 = cpu_to_be64(0);
lh->lh_header.mh_format = cpu_to_be32(GFS2_FORMAT_LH);
+ lh->lh_header.mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
lh->lh_sequence = cpu_to_be64(sdp->sd_log_sequence++);
lh->lh_flags = cpu_to_be32(flags);
lh->lh_tail = cpu_to_be32(tail);
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 9969ff062c5b..de97632ba32f 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -132,6 +132,7 @@ static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type)
static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
{
struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
+ struct gfs2_meta_header *mh;
struct gfs2_trans *tr;
lock_buffer(bd->bd_bh);
@@ -148,6 +149,9 @@ static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
gfs2_meta_check(sdp, bd->bd_bh);
gfs2_pin(sdp, bd->bd_bh);
+ mh = (struct gfs2_meta_header *)bd->bd_bh->b_data;
+ mh->__pad0 = cpu_to_be64(0);
+ mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
sdp->sd_log_num_buf++;
list_add(&le->le_list, &sdp->sd_log_le_buf);
tr->tr_num_buf_new++;
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 52fb6c048981..edfee24f3636 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -18,6 +18,7 @@
#include <linux/mount.h>
#include <linux/gfs2_ondisk.h>
#include <linux/slow-work.h>
+#include <linux/quotaops.h>
#include "gfs2.h"
#include "incore.h"
@@ -62,13 +63,10 @@ static void gfs2_tune_init(struct gfs2_tune *gt)
gt->gt_quota_warn_period = 10;
gt->gt_quota_scale_num = 1;
gt->gt_quota_scale_den = 1;
- gt->gt_quota_quantum = 60;
gt->gt_new_files_jdata = 0;
gt->gt_max_readahead = 1 << 18;
gt->gt_stall_secs = 600;
gt->gt_complain_secs = 10;
- gt->gt_statfs_quantum = 30;
- gt->gt_statfs_slow = 0;
}
static struct gfs2_sbd *init_sbd(struct super_block *sb)
@@ -1114,7 +1112,7 @@ void gfs2_online_uevent(struct gfs2_sbd *sdp)
* Returns: errno
*/
-static int fill_super(struct super_block *sb, void *data, int silent)
+static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent)
{
struct gfs2_sbd *sdp;
struct gfs2_holder mount_gh;
@@ -1125,17 +1123,7 @@ static int fill_super(struct super_block *sb, void *data, int silent)
printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n");
return -ENOMEM;
}
-
- sdp->sd_args.ar_quota = GFS2_QUOTA_DEFAULT;
- sdp->sd_args.ar_data = GFS2_DATA_DEFAULT;
- sdp->sd_args.ar_commit = 60;
- sdp->sd_args.ar_errors = GFS2_ERRORS_DEFAULT;
-
- error = gfs2_mount_args(sdp, &sdp->sd_args, data);
- if (error) {
- printk(KERN_WARNING "GFS2: can't parse mount arguments\n");
- goto fail;
- }
+ sdp->sd_args = *args;
if (sdp->sd_args.ar_spectator) {
sb->s_flags |= MS_RDONLY;
@@ -1143,11 +1131,15 @@ static int fill_super(struct super_block *sb, void *data, int silent)
}
if (sdp->sd_args.ar_posix_acl)
sb->s_flags |= MS_POSIXACL;
+ if (sdp->sd_args.ar_nobarrier)
+ set_bit(SDF_NOBARRIERS, &sdp->sd_flags);
sb->s_magic = GFS2_MAGIC;
sb->s_op = &gfs2_super_ops;
sb->s_export_op = &gfs2_export_ops;
sb->s_xattr = gfs2_xattr_handlers;
+ sb->s_qcop = &gfs2_quotactl_ops;
+ sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
sb->s_time_gran = 1;
sb->s_maxbytes = MAX_LFS_FILESIZE;
@@ -1160,6 +1152,15 @@ static int fill_super(struct super_block *sb, void *data, int silent)
sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift;
sdp->sd_tune.gt_log_flush_secs = sdp->sd_args.ar_commit;
+ sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum;
+ if (sdp->sd_args.ar_statfs_quantum) {
+ sdp->sd_tune.gt_statfs_slow = 0;
+ sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum;
+ }
+ else {
+ sdp->sd_tune.gt_statfs_slow = 1;
+ sdp->sd_tune.gt_statfs_quantum = 30;
+ }
error = init_names(sdp, silent);
if (error)
@@ -1243,18 +1244,127 @@ fail:
return error;
}
-static int gfs2_get_sb(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *data, struct vfsmount *mnt)
+static int set_gfs2_super(struct super_block *s, void *data)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt);
+ s->s_bdev = data;
+ s->s_dev = s->s_bdev->bd_dev;
+
+ /*
+ * We set the bdi here to the queue backing, file systems can
+ * overwrite this in ->fill_super()
+ */
+ s->s_bdi = &bdev_get_queue(s->s_bdev)->backing_dev_info;
+ return 0;
}
-static int test_meta_super(struct super_block *s, void *ptr)
+static int test_gfs2_super(struct super_block *s, void *ptr)
{
struct block_device *bdev = ptr;
return (bdev == s->s_bdev);
}
+/**
+ * gfs2_get_sb - Get the GFS2 superblock
+ * @fs_type: The GFS2 filesystem type
+ * @flags: Mount flags
+ * @dev_name: The name of the device
+ * @data: The mount arguments
+ * @mnt: The vfsmnt for this mount
+ *
+ * Q. Why not use get_sb_bdev() ?
+ * A. We need to select one of two root directories to mount, independent
+ * of whether this is the initial, or subsequent, mount of this sb
+ *
+ * Returns: 0 or -ve on error
+ */
+
+static int gfs2_get_sb(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data, struct vfsmount *mnt)
+{
+ struct block_device *bdev;
+ struct super_block *s;
+ fmode_t mode = FMODE_READ;
+ int error;
+ struct gfs2_args args;
+ struct gfs2_sbd *sdp;
+
+ if (!(flags & MS_RDONLY))
+ mode |= FMODE_WRITE;
+
+ bdev = open_bdev_exclusive(dev_name, mode, fs_type);
+ if (IS_ERR(bdev))
+ return PTR_ERR(bdev);
+
+ /*
+ * once the super is inserted into the list by sget, s_umount
+ * will protect the lockfs code from trying to start a snapshot
+ * while we are mounting
+ */
+ mutex_lock(&bdev->bd_fsfreeze_mutex);
+ if (bdev->bd_fsfreeze_count > 0) {
+ mutex_unlock(&bdev->bd_fsfreeze_mutex);
+ error = -EBUSY;
+ goto error_bdev;
+ }
+ s = sget(fs_type, test_gfs2_super, set_gfs2_super, bdev);
+ mutex_unlock(&bdev->bd_fsfreeze_mutex);
+ error = PTR_ERR(s);
+ if (IS_ERR(s))
+ goto error_bdev;
+
+ memset(&args, 0, sizeof(args));
+ args.ar_quota = GFS2_QUOTA_DEFAULT;
+ args.ar_data = GFS2_DATA_DEFAULT;
+ args.ar_commit = 60;
+ args.ar_statfs_quantum = 30;
+ args.ar_quota_quantum = 60;
+ args.ar_errors = GFS2_ERRORS_DEFAULT;
+
+ error = gfs2_mount_args(&args, data);
+ if (error) {
+ printk(KERN_WARNING "GFS2: can't parse mount arguments\n");
+ if (s->s_root)
+ goto error_super;
+ deactivate_locked_super(s);
+ return error;
+ }
+
+ if (s->s_root) {
+ error = -EBUSY;
+ if ((flags ^ s->s_flags) & MS_RDONLY)
+ goto error_super;
+ close_bdev_exclusive(bdev, mode);
+ } else {
+ char b[BDEVNAME_SIZE];
+
+ s->s_flags = flags;
+ s->s_mode = mode;
+ strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id));
+ sb_set_blocksize(s, block_size(bdev));
+ error = fill_super(s, &args, flags & MS_SILENT ? 1 : 0);
+ if (error) {
+ deactivate_locked_super(s);
+ return error;
+ }
+ s->s_flags |= MS_ACTIVE;
+ bdev->bd_super = s;
+ }
+
+ sdp = s->s_fs_info;
+ mnt->mnt_sb = s;
+ if (args.ar_meta)
+ mnt->mnt_root = dget(sdp->sd_master_dir);
+ else
+ mnt->mnt_root = dget(sdp->sd_root_dir);
+ return 0;
+
+error_super:
+ deactivate_locked_super(s);
+error_bdev:
+ close_bdev_exclusive(bdev, mode);
+ return error;
+}
+
static int set_meta_super(struct super_block *s, void *ptr)
{
return -EINVAL;
@@ -1274,13 +1384,17 @@ static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags,
dev_name, error);
return error;
}
- s = sget(&gfs2_fs_type, test_meta_super, set_meta_super,
+ s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super,
path.dentry->d_inode->i_sb->s_bdev);
path_put(&path);
if (IS_ERR(s)) {
printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n");
return PTR_ERR(s);
}
+ if ((flags ^ s->s_flags) & MS_RDONLY) {
+ deactivate_locked_super(s);
+ return -EBUSY;
+ }
sdp = s->s_fs_info;
mnt->mnt_sb = s;
mnt->mnt_root = dget(sdp->sd_master_dir);
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 2e9b9326bfc9..e3bf6eab8750 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -15,7 +15,7 @@
* fuzziness in the current usage value of IDs that are being used on different
* nodes in the cluster simultaneously. So, it is possible for a user on
* multiple nodes to overrun their quota, but that overrun is controlable.
- * Since quota tags are part of transactions, there is no need to a quota check
+ * Since quota tags are part of transactions, there is no need for a quota check
* program to be run on node crashes or anything like that.
*
* There are couple of knobs that let the administrator manage the quota
@@ -47,6 +47,8 @@
#include <linux/gfs2_ondisk.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
+#include <linux/quota.h>
+#include <linux/dqblk_xfs.h>
#include "gfs2.h"
#include "incore.h"
@@ -65,13 +67,6 @@
#define QUOTA_USER 1
#define QUOTA_GROUP 0
-struct gfs2_quota_host {
- u64 qu_limit;
- u64 qu_warn;
- s64 qu_value;
- u32 qu_ll_next;
-};
-
struct gfs2_quota_change_host {
u64 qc_change;
u32 qc_flags; /* GFS2_QCF_... */
@@ -164,7 +159,7 @@ fail:
return error;
}
-static int qd_get(struct gfs2_sbd *sdp, int user, u32 id, int create,
+static int qd_get(struct gfs2_sbd *sdp, int user, u32 id,
struct gfs2_quota_data **qdp)
{
struct gfs2_quota_data *qd = NULL, *new_qd = NULL;
@@ -202,7 +197,7 @@ static int qd_get(struct gfs2_sbd *sdp, int user, u32 id, int create,
spin_unlock(&qd_lru_lock);
- if (qd || !create) {
+ if (qd) {
if (new_qd) {
gfs2_glock_put(new_qd->qd_gl);
kmem_cache_free(gfs2_quotad_cachep, new_qd);
@@ -461,12 +456,12 @@ static void qd_unlock(struct gfs2_quota_data *qd)
qd_put(qd);
}
-static int qdsb_get(struct gfs2_sbd *sdp, int user, u32 id, int create,
+static int qdsb_get(struct gfs2_sbd *sdp, int user, u32 id,
struct gfs2_quota_data **qdp)
{
int error;
- error = qd_get(sdp, user, id, create, qdp);
+ error = qd_get(sdp, user, id, qdp);
if (error)
return error;
@@ -508,20 +503,20 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
return 0;
- error = qdsb_get(sdp, QUOTA_USER, ip->i_inode.i_uid, CREATE, qd);
+ error = qdsb_get(sdp, QUOTA_USER, ip->i_inode.i_uid, qd);
if (error)
goto out;
al->al_qd_num++;
qd++;
- error = qdsb_get(sdp, QUOTA_GROUP, ip->i_inode.i_gid, CREATE, qd);
+ error = qdsb_get(sdp, QUOTA_GROUP, ip->i_inode.i_gid, qd);
if (error)
goto out;
al->al_qd_num++;
qd++;
if (uid != NO_QUOTA_CHANGE && uid != ip->i_inode.i_uid) {
- error = qdsb_get(sdp, QUOTA_USER, uid, CREATE, qd);
+ error = qdsb_get(sdp, QUOTA_USER, uid, qd);
if (error)
goto out;
al->al_qd_num++;
@@ -529,7 +524,7 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
}
if (gid != NO_QUOTA_CHANGE && gid != ip->i_inode.i_gid) {
- error = qdsb_get(sdp, QUOTA_GROUP, gid, CREATE, qd);
+ error = qdsb_get(sdp, QUOTA_GROUP, gid, qd);
if (error)
goto out;
al->al_qd_num++;
@@ -617,48 +612,36 @@ static void do_qc(struct gfs2_quota_data *qd, s64 change)
mutex_unlock(&sdp->sd_quota_mutex);
}
-static void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf)
-{
- const struct gfs2_quota *str = buf;
-
- qu->qu_limit = be64_to_cpu(str->qu_limit);
- qu->qu_warn = be64_to_cpu(str->qu_warn);
- qu->qu_value = be64_to_cpu(str->qu_value);
- qu->qu_ll_next = be32_to_cpu(str->qu_ll_next);
-}
-
-static void gfs2_quota_out(const struct gfs2_quota_host *qu, void *buf)
-{
- struct gfs2_quota *str = buf;
-
- str->qu_limit = cpu_to_be64(qu->qu_limit);
- str->qu_warn = cpu_to_be64(qu->qu_warn);
- str->qu_value = cpu_to_be64(qu->qu_value);
- str->qu_ll_next = cpu_to_be32(qu->qu_ll_next);
- memset(&str->qu_reserved, 0, sizeof(str->qu_reserved));
-}
-
/**
- * gfs2_adjust_quota
+ * gfs2_adjust_quota - adjust record of current block usage
+ * @ip: The quota inode
+ * @loc: Offset of the entry in the quota file
+ * @change: The amount of usage change to record
+ * @qd: The quota data
+ * @fdq: The updated limits to record
*
* This function was mostly borrowed from gfs2_block_truncate_page which was
* in turn mostly borrowed from ext3
+ *
+ * Returns: 0 or -ve on error
*/
+
static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
- s64 change, struct gfs2_quota_data *qd)
+ s64 change, struct gfs2_quota_data *qd,
+ struct fs_disk_quota *fdq)
{
struct inode *inode = &ip->i_inode;
struct address_space *mapping = inode->i_mapping;
unsigned long index = loc >> PAGE_CACHE_SHIFT;
unsigned offset = loc & (PAGE_CACHE_SIZE - 1);
unsigned blocksize, iblock, pos;
- struct buffer_head *bh;
+ struct buffer_head *bh, *dibh;
struct page *page;
void *kaddr;
- char *ptr;
- struct gfs2_quota_host qp;
+ struct gfs2_quota *qp;
s64 value;
int err = -EIO;
+ u64 size;
if (gfs2_is_stuffed(ip))
gfs2_unstuff_dinode(ip, NULL);
@@ -700,18 +683,38 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
gfs2_trans_add_bh(ip->i_gl, bh, 0);
kaddr = kmap_atomic(page, KM_USER0);
- ptr = kaddr + offset;
- gfs2_quota_in(&qp, ptr);
- qp.qu_value += change;
- value = qp.qu_value;
- gfs2_quota_out(&qp, ptr);
+ qp = kaddr + offset;
+ value = (s64)be64_to_cpu(qp->qu_value) + change;
+ qp->qu_value = cpu_to_be64(value);
+ qd->qd_qb.qb_value = qp->qu_value;
+ if (fdq) {
+ if (fdq->d_fieldmask & FS_DQ_BSOFT) {
+ qp->qu_warn = cpu_to_be64(fdq->d_blk_softlimit);
+ qd->qd_qb.qb_warn = qp->qu_warn;
+ }
+ if (fdq->d_fieldmask & FS_DQ_BHARD) {
+ qp->qu_limit = cpu_to_be64(fdq->d_blk_hardlimit);
+ qd->qd_qb.qb_limit = qp->qu_limit;
+ }
+ }
flush_dcache_page(page);
kunmap_atomic(kaddr, KM_USER0);
- err = 0;
- qd->qd_qb.qb_magic = cpu_to_be32(GFS2_MAGIC);
- qd->qd_qb.qb_value = cpu_to_be64(value);
- ((struct gfs2_quota_lvb*)(qd->qd_gl->gl_lvb))->qb_magic = cpu_to_be32(GFS2_MAGIC);
- ((struct gfs2_quota_lvb*)(qd->qd_gl->gl_lvb))->qb_value = cpu_to_be64(value);
+
+ err = gfs2_meta_inode_buffer(ip, &dibh);
+ if (err)
+ goto unlock;
+
+ size = loc + sizeof(struct gfs2_quota);
+ if (size > inode->i_size) {
+ ip->i_disksize = size;
+ i_size_write(inode, size);
+ }
+ inode->i_mtime = inode->i_atime = CURRENT_TIME;
+ gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+ gfs2_dinode_out(ip, dibh->b_data);
+ brelse(dibh);
+ mark_inode_dirty(inode);
+
unlock:
unlock_page(page);
page_cache_release(page);
@@ -739,9 +742,9 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
return -ENOMEM;
sort(qda, num_qd, sizeof(struct gfs2_quota_data *), sort_qd, NULL);
+ mutex_lock_nested(&ip->i_inode.i_mutex, I_MUTEX_QUOTA);
for (qx = 0; qx < num_qd; qx++) {
- error = gfs2_glock_nq_init(qda[qx]->qd_gl,
- LM_ST_EXCLUSIVE,
+ error = gfs2_glock_nq_init(qda[qx]->qd_gl, LM_ST_EXCLUSIVE,
GL_NOCACHE, &ghs[qx]);
if (error)
goto out;
@@ -795,9 +798,7 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
for (x = 0; x < num_qd; x++) {
qd = qda[x];
offset = qd2offset(qd);
- error = gfs2_adjust_quota(ip, offset, qd->qd_change_sync,
- (struct gfs2_quota_data *)
- qd);
+ error = gfs2_adjust_quota(ip, offset, qd->qd_change_sync, qd, NULL);
if (error)
goto out_end_trans;
@@ -817,21 +818,44 @@ out_gunlock:
out:
while (qx--)
gfs2_glock_dq_uninit(&ghs[qx]);
+ mutex_unlock(&ip->i_inode.i_mutex);
kfree(ghs);
gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl);
return error;
}
+static int update_qd(struct gfs2_sbd *sdp, struct gfs2_quota_data *qd)
+{
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode);
+ struct gfs2_quota q;
+ struct gfs2_quota_lvb *qlvb;
+ loff_t pos;
+ int error;
+
+ memset(&q, 0, sizeof(struct gfs2_quota));
+ pos = qd2offset(qd);
+ error = gfs2_internal_read(ip, NULL, (char *)&q, &pos, sizeof(q));
+ if (error < 0)
+ return error;
+
+ qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lvb;
+ qlvb->qb_magic = cpu_to_be32(GFS2_MAGIC);
+ qlvb->__pad = 0;
+ qlvb->qb_limit = q.qu_limit;
+ qlvb->qb_warn = q.qu_warn;
+ qlvb->qb_value = q.qu_value;
+ qd->qd_qb = *qlvb;
+
+ return 0;
+}
+
static int do_glock(struct gfs2_quota_data *qd, int force_refresh,
struct gfs2_holder *q_gh)
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode);
struct gfs2_holder i_gh;
- struct gfs2_quota_host q;
- char buf[sizeof(struct gfs2_quota)];
int error;
- struct gfs2_quota_lvb *qlvb;
restart:
error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_SHARED, 0, q_gh);
@@ -841,11 +865,9 @@ restart:
qd->qd_qb = *(struct gfs2_quota_lvb *)qd->qd_gl->gl_lvb;
if (force_refresh || qd->qd_qb.qb_magic != cpu_to_be32(GFS2_MAGIC)) {
- loff_t pos;
gfs2_glock_dq_uninit(q_gh);
- error = gfs2_glock_nq_init(qd->qd_gl,
- LM_ST_EXCLUSIVE, GL_NOCACHE,
- q_gh);
+ error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_EXCLUSIVE,
+ GL_NOCACHE, q_gh);
if (error)
return error;
@@ -853,29 +875,14 @@ restart:
if (error)
goto fail;
- memset(buf, 0, sizeof(struct gfs2_quota));
- pos = qd2offset(qd);
- error = gfs2_internal_read(ip, NULL, buf, &pos,
- sizeof(struct gfs2_quota));
- if (error < 0)
+ error = update_qd(sdp, qd);
+ if (error)
goto fail_gunlock;
gfs2_glock_dq_uninit(&i_gh);
-
- gfs2_quota_in(&q, buf);
- qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lvb;
- qlvb->qb_magic = cpu_to_be32(GFS2_MAGIC);
- qlvb->__pad = 0;
- qlvb->qb_limit = cpu_to_be64(q.qu_limit);
- qlvb->qb_warn = cpu_to_be64(q.qu_warn);
- qlvb->qb_value = cpu_to_be64(q.qu_value);
- qd->qd_qb = *qlvb;
-
- if (gfs2_glock_is_blocking(qd->qd_gl)) {
- gfs2_glock_dq_uninit(q_gh);
- force_refresh = 0;
- goto restart;
- }
+ gfs2_glock_dq_uninit(q_gh);
+ force_refresh = 0;
+ goto restart;
}
return 0;
@@ -995,7 +1002,7 @@ static int print_message(struct gfs2_quota_data *qd, char *type)
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
- printk(KERN_INFO "GFS2: fsid=%s: quota %s for %s %u\r\n",
+ printk(KERN_INFO "GFS2: fsid=%s: quota %s for %s %u\n",
sdp->sd_fsname, type,
(test_bit(QDF_USER, &qd->qd_flags)) ? "user" : "group",
qd->qd_id);
@@ -1032,6 +1039,10 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
if (be64_to_cpu(qd->qd_qb.qb_limit) && (s64)be64_to_cpu(qd->qd_qb.qb_limit) < value) {
print_message(qd, "exceeded");
+ quota_send_warning(test_bit(QDF_USER, &qd->qd_flags) ?
+ USRQUOTA : GRPQUOTA, qd->qd_id,
+ sdp->sd_vfs->s_dev, QUOTA_NL_BHARDWARN);
+
error = -EDQUOT;
break;
} else if (be64_to_cpu(qd->qd_qb.qb_warn) &&
@@ -1039,6 +1050,9 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
time_after_eq(jiffies, qd->qd_last_warn +
gfs2_tune_get(sdp,
gt_quota_warn_period) * HZ)) {
+ quota_send_warning(test_bit(QDF_USER, &qd->qd_flags) ?
+ USRQUOTA : GRPQUOTA, qd->qd_id,
+ sdp->sd_vfs->s_dev, QUOTA_NL_BSOFTWARN);
error = print_message(qd, "warning");
qd->qd_last_warn = jiffies;
}
@@ -1069,8 +1083,9 @@ void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
}
}
-int gfs2_quota_sync(struct gfs2_sbd *sdp)
+int gfs2_quota_sync(struct super_block *sb, int type)
{
+ struct gfs2_sbd *sdp = sb->s_fs_info;
struct gfs2_quota_data **qda;
unsigned int max_qd = gfs2_tune_get(sdp, gt_quota_simul_sync);
unsigned int num_qd;
@@ -1118,7 +1133,7 @@ int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id)
struct gfs2_holder q_gh;
int error;
- error = qd_get(sdp, user, id, CREATE, &qd);
+ error = qd_get(sdp, user, id, &qd);
if (error)
return error;
@@ -1127,7 +1142,6 @@ int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id)
gfs2_glock_dq_uninit(&q_gh);
qd_put(qd);
-
return error;
}
@@ -1298,12 +1312,12 @@ static void quotad_error(struct gfs2_sbd *sdp, const char *msg, int error)
}
static void quotad_check_timeo(struct gfs2_sbd *sdp, const char *msg,
- int (*fxn)(struct gfs2_sbd *sdp),
+ int (*fxn)(struct super_block *sb, int type),
unsigned long t, unsigned long *timeo,
unsigned int *new_timeo)
{
if (t >= *timeo) {
- int error = fxn(sdp);
+ int error = fxn(sdp->sd_vfs, 0);
quotad_error(sdp, msg, error);
*timeo = gfs2_tune_get_i(&sdp->sd_tune, new_timeo) * HZ;
} else {
@@ -1330,6 +1344,14 @@ static void quotad_check_trunc_list(struct gfs2_sbd *sdp)
}
}
+void gfs2_wake_up_statfs(struct gfs2_sbd *sdp) {
+ if (!sdp->sd_statfs_force_sync) {
+ sdp->sd_statfs_force_sync = 1;
+ wake_up(&sdp->sd_quota_wait);
+ }
+}
+
+
/**
* gfs2_quotad - Write cached quota changes into the quota file
* @sdp: Pointer to GFS2 superblock
@@ -1349,8 +1371,15 @@ int gfs2_quotad(void *data)
while (!kthread_should_stop()) {
/* Update the master statfs file */
- quotad_check_timeo(sdp, "statfs", gfs2_statfs_sync, t,
- &statfs_timeo, &tune->gt_statfs_quantum);
+ if (sdp->sd_statfs_force_sync) {
+ int error = gfs2_statfs_sync(sdp->sd_vfs, 0);
+ quotad_error(sdp, "statfs", error);
+ statfs_timeo = gfs2_tune_get(sdp, gt_statfs_quantum) * HZ;
+ }
+ else
+ quotad_check_timeo(sdp, "statfs", gfs2_statfs_sync, t,
+ &statfs_timeo,
+ &tune->gt_statfs_quantum);
/* Update quota file */
quotad_check_timeo(sdp, "sync", gfs2_quota_sync, t,
@@ -1367,7 +1396,7 @@ int gfs2_quotad(void *data)
spin_lock(&sdp->sd_trunc_lock);
empty = list_empty(&sdp->sd_trunc_list);
spin_unlock(&sdp->sd_trunc_lock);
- if (empty)
+ if (empty && !sdp->sd_statfs_force_sync)
t -= schedule_timeout(t);
else
t = 0;
@@ -1377,3 +1406,181 @@ int gfs2_quotad(void *data)
return 0;
}
+static int gfs2_quota_get_xstate(struct super_block *sb,
+ struct fs_quota_stat *fqs)
+{
+ struct gfs2_sbd *sdp = sb->s_fs_info;
+
+ memset(fqs, 0, sizeof(struct fs_quota_stat));
+ fqs->qs_version = FS_QSTAT_VERSION;
+ if (sdp->sd_args.ar_quota == GFS2_QUOTA_ON)
+ fqs->qs_flags = (XFS_QUOTA_UDQ_ENFD | XFS_QUOTA_GDQ_ENFD);
+ else if (sdp->sd_args.ar_quota == GFS2_QUOTA_ACCOUNT)
+ fqs->qs_flags = (XFS_QUOTA_UDQ_ACCT | XFS_QUOTA_GDQ_ACCT);
+ if (sdp->sd_quota_inode) {
+ fqs->qs_uquota.qfs_ino = GFS2_I(sdp->sd_quota_inode)->i_no_addr;
+ fqs->qs_uquota.qfs_nblks = sdp->sd_quota_inode->i_blocks;
+ }
+ fqs->qs_uquota.qfs_nextents = 1; /* unsupported */
+ fqs->qs_gquota = fqs->qs_uquota; /* its the same inode in both cases */
+ fqs->qs_incoredqs = atomic_read(&qd_lru_count);
+ return 0;
+}
+
+static int gfs2_xquota_get(struct super_block *sb, int type, qid_t id,
+ struct fs_disk_quota *fdq)
+{
+ struct gfs2_sbd *sdp = sb->s_fs_info;
+ struct gfs2_quota_lvb *qlvb;
+ struct gfs2_quota_data *qd;
+ struct gfs2_holder q_gh;
+ int error;
+
+ memset(fdq, 0, sizeof(struct fs_disk_quota));
+
+ if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
+ return -ESRCH; /* Crazy XFS error code */
+
+ if (type == USRQUOTA)
+ type = QUOTA_USER;
+ else if (type == GRPQUOTA)
+ type = QUOTA_GROUP;
+ else
+ return -EINVAL;
+
+ error = qd_get(sdp, type, id, &qd);
+ if (error)
+ return error;
+ error = do_glock(qd, FORCE, &q_gh);
+ if (error)
+ goto out;
+
+ qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lvb;
+ fdq->d_version = FS_DQUOT_VERSION;
+ fdq->d_flags = (type == QUOTA_USER) ? XFS_USER_QUOTA : XFS_GROUP_QUOTA;
+ fdq->d_id = id;
+ fdq->d_blk_hardlimit = be64_to_cpu(qlvb->qb_limit);
+ fdq->d_blk_softlimit = be64_to_cpu(qlvb->qb_warn);
+ fdq->d_bcount = be64_to_cpu(qlvb->qb_value);
+
+ gfs2_glock_dq_uninit(&q_gh);
+out:
+ qd_put(qd);
+ return error;
+}
+
+/* GFS2 only supports a subset of the XFS fields */
+#define GFS2_FIELDMASK (FS_DQ_BSOFT|FS_DQ_BHARD)
+
+static int gfs2_xquota_set(struct super_block *sb, int type, qid_t id,
+ struct fs_disk_quota *fdq)
+{
+ struct gfs2_sbd *sdp = sb->s_fs_info;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode);
+ struct gfs2_quota_data *qd;
+ struct gfs2_holder q_gh, i_gh;
+ unsigned int data_blocks, ind_blocks;
+ unsigned int blocks = 0;
+ int alloc_required;
+ struct gfs2_alloc *al;
+ loff_t offset;
+ int error;
+
+ if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
+ return -ESRCH; /* Crazy XFS error code */
+
+ switch(type) {
+ case USRQUOTA:
+ type = QUOTA_USER;
+ if (fdq->d_flags != XFS_USER_QUOTA)
+ return -EINVAL;
+ break;
+ case GRPQUOTA:
+ type = QUOTA_GROUP;
+ if (fdq->d_flags != XFS_GROUP_QUOTA)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (fdq->d_fieldmask & ~GFS2_FIELDMASK)
+ return -EINVAL;
+ if (fdq->d_id != id)
+ return -EINVAL;
+
+ error = qd_get(sdp, type, id, &qd);
+ if (error)
+ return error;
+
+ mutex_lock(&ip->i_inode.i_mutex);
+ error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_EXCLUSIVE, 0, &q_gh);
+ if (error)
+ goto out_put;
+ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
+ if (error)
+ goto out_q;
+
+ /* Check for existing entry, if none then alloc new blocks */
+ error = update_qd(sdp, qd);
+ if (error)
+ goto out_i;
+
+ /* If nothing has changed, this is a no-op */
+ if ((fdq->d_fieldmask & FS_DQ_BSOFT) &&
+ (fdq->d_blk_softlimit == be64_to_cpu(qd->qd_qb.qb_warn)))
+ fdq->d_fieldmask ^= FS_DQ_BSOFT;
+ if ((fdq->d_fieldmask & FS_DQ_BHARD) &&
+ (fdq->d_blk_hardlimit == be64_to_cpu(qd->qd_qb.qb_limit)))
+ fdq->d_fieldmask ^= FS_DQ_BHARD;
+ if (fdq->d_fieldmask == 0)
+ goto out_i;
+
+ offset = qd2offset(qd);
+ error = gfs2_write_alloc_required(ip, offset, sizeof(struct gfs2_quota),
+ &alloc_required);
+ if (error)
+ goto out_i;
+ if (alloc_required) {
+ al = gfs2_alloc_get(ip);
+ if (al == NULL)
+ goto out_i;
+ gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota),
+ &data_blocks, &ind_blocks);
+ blocks = al->al_requested = 1 + data_blocks + ind_blocks;
+ error = gfs2_inplace_reserve(ip);
+ if (error)
+ goto out_alloc;
+ }
+
+ error = gfs2_trans_begin(sdp, blocks + RES_DINODE + 1, 0);
+ if (error)
+ goto out_release;
+
+ /* Apply changes */
+ error = gfs2_adjust_quota(ip, offset, 0, qd, fdq);
+
+ gfs2_trans_end(sdp);
+out_release:
+ if (alloc_required) {
+ gfs2_inplace_release(ip);
+out_alloc:
+ gfs2_alloc_put(ip);
+ }
+out_i:
+ gfs2_glock_dq_uninit(&i_gh);
+out_q:
+ gfs2_glock_dq_uninit(&q_gh);
+out_put:
+ mutex_unlock(&ip->i_inode.i_mutex);
+ qd_put(qd);
+ return error;
+}
+
+const struct quotactl_ops gfs2_quotactl_ops = {
+ .quota_sync = gfs2_quota_sync,
+ .get_xstate = gfs2_quota_get_xstate,
+ .get_xquota = gfs2_xquota_get,
+ .set_xquota = gfs2_xquota_set,
+};
+
diff --git a/fs/gfs2/quota.h b/fs/gfs2/quota.h
index 0fa5fa63d0e8..e271fa07ad02 100644
--- a/fs/gfs2/quota.h
+++ b/fs/gfs2/quota.h
@@ -25,13 +25,15 @@ extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
u32 uid, u32 gid);
-extern int gfs2_quota_sync(struct gfs2_sbd *sdp);
+extern int gfs2_quota_sync(struct super_block *sb, int type);
extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
extern int gfs2_quota_init(struct gfs2_sbd *sdp);
extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
extern int gfs2_quotad(void *data);
+extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
+
static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
@@ -50,5 +52,6 @@ static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
}
extern int gfs2_shrink_qd_memory(int nr, gfp_t gfp_mask);
+extern const struct quotactl_ops gfs2_quotactl_ops;
#endif /* __QUOTA_DOT_H__ */
diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c
index 09fa31965576..4b9bece3d437 100644
--- a/fs/gfs2/recovery.c
+++ b/fs/gfs2/recovery.c
@@ -410,7 +410,9 @@ static int clean_journal(struct gfs2_jdesc *jd, struct gfs2_log_header_host *hea
memset(lh, 0, sizeof(struct gfs2_log_header));
lh->lh_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
lh->lh_header.mh_type = cpu_to_be32(GFS2_METATYPE_LH);
+ lh->lh_header.__pad0 = cpu_to_be64(0);
lh->lh_header.mh_format = cpu_to_be32(GFS2_FORMAT_LH);
+ lh->lh_header.mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
lh->lh_sequence = cpu_to_be64(head->lh_sequence + 1);
lh->lh_flags = cpu_to_be32(GFS2_LOG_HEAD_UNMOUNT);
lh->lh_blkno = cpu_to_be32(lblock);
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 8f1cfb02a6cb..0608f490c295 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -1710,11 +1710,16 @@ int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr, unsigned int type)
{
struct gfs2_rgrpd *rgd;
struct gfs2_holder ri_gh, rgd_gh;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_rindex);
+ int ri_locked = 0;
int error;
- error = gfs2_rindex_hold(sdp, &ri_gh);
- if (error)
- goto fail;
+ if (!gfs2_glock_is_locked_by_me(ip->i_gl)) {
+ error = gfs2_rindex_hold(sdp, &ri_gh);
+ if (error)
+ goto fail;
+ ri_locked = 1;
+ }
error = -EINVAL;
rgd = gfs2_blk2rgrpd(sdp, no_addr);
@@ -1730,7 +1735,8 @@ int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr, unsigned int type)
gfs2_glock_dq_uninit(&rgd_gh);
fail_rindex:
- gfs2_glock_dq_uninit(&ri_gh);
+ if (ri_locked)
+ gfs2_glock_dq_uninit(&ri_gh);
fail:
return error;
}
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 0ec3ec672de1..c282ad41f3d1 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -70,6 +70,11 @@ enum {
Opt_commit,
Opt_err_withdraw,
Opt_err_panic,
+ Opt_statfs_quantum,
+ Opt_statfs_percent,
+ Opt_quota_quantum,
+ Opt_barrier,
+ Opt_nobarrier,
Opt_error,
};
@@ -101,18 +106,23 @@ static const match_table_t tokens = {
{Opt_commit, "commit=%d"},
{Opt_err_withdraw, "errors=withdraw"},
{Opt_err_panic, "errors=panic"},
+ {Opt_statfs_quantum, "statfs_quantum=%d"},
+ {Opt_statfs_percent, "statfs_percent=%d"},
+ {Opt_quota_quantum, "quota_quantum=%d"},
+ {Opt_barrier, "barrier"},
+ {Opt_nobarrier, "nobarrier"},
{Opt_error, NULL}
};
/**
* gfs2_mount_args - Parse mount options
- * @sdp:
- * @data:
+ * @args: The structure into which the parsed options will be written
+ * @options: The options to parse
*
* Return: errno
*/
-int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *options)
+int gfs2_mount_args(struct gfs2_args *args, char *options)
{
char *o;
int token;
@@ -157,7 +167,7 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *options)
break;
case Opt_debug:
if (args->ar_errors == GFS2_ERRORS_PANIC) {
- fs_info(sdp, "-o debug and -o errors=panic "
+ printk(KERN_WARNING "GFS2: -o debug and -o errors=panic "
"are mutually exclusive.\n");
return -EINVAL;
}
@@ -210,7 +220,29 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *options)
case Opt_commit:
rv = match_int(&tmp[0], &args->ar_commit);
if (rv || args->ar_commit <= 0) {
- fs_info(sdp, "commit mount option requires a positive numeric argument\n");
+ printk(KERN_WARNING "GFS2: commit mount option requires a positive numeric argument\n");
+ return rv ? rv : -EINVAL;
+ }
+ break;
+ case Opt_statfs_quantum:
+ rv = match_int(&tmp[0], &args->ar_statfs_quantum);
+ if (rv || args->ar_statfs_quantum < 0) {
+ printk(KERN_WARNING "GFS2: statfs_quantum mount option requires a non-negative numeric argument\n");
+ return rv ? rv : -EINVAL;
+ }
+ break;
+ case Opt_quota_quantum:
+ rv = match_int(&tmp[0], &args->ar_quota_quantum);
+ if (rv || args->ar_quota_quantum <= 0) {
+ printk(KERN_WARNING "GFS2: quota_quantum mount option requires a positive numeric argument\n");
+ return rv ? rv : -EINVAL;
+ }
+ break;
+ case Opt_statfs_percent:
+ rv = match_int(&tmp[0], &args->ar_statfs_percent);
+ if (rv || args->ar_statfs_percent < 0 ||
+ args->ar_statfs_percent > 100) {
+ printk(KERN_WARNING "statfs_percent mount option requires a numeric argument between 0 and 100\n");
return rv ? rv : -EINVAL;
}
break;
@@ -219,15 +251,21 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *options)
break;
case Opt_err_panic:
if (args->ar_debug) {
- fs_info(sdp, "-o debug and -o errors=panic "
+ printk(KERN_WARNING "GFS2: -o debug and -o errors=panic "
"are mutually exclusive.\n");
return -EINVAL;
}
args->ar_errors = GFS2_ERRORS_PANIC;
break;
+ case Opt_barrier:
+ args->ar_nobarrier = 0;
+ break;
+ case Opt_nobarrier:
+ args->ar_nobarrier = 1;
+ break;
case Opt_error:
default:
- fs_info(sdp, "invalid mount option: %s\n", o);
+ printk(KERN_WARNING "GFS2: invalid mount option: %s\n", o);
return -EINVAL;
}
}
@@ -442,7 +480,10 @@ void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free,
{
struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode);
struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local;
+ struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master;
struct buffer_head *l_bh;
+ s64 x, y;
+ int need_sync = 0;
int error;
error = gfs2_meta_inode_buffer(l_ip, &l_bh);
@@ -456,9 +497,17 @@ void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free,
l_sc->sc_free += free;
l_sc->sc_dinodes += dinodes;
gfs2_statfs_change_out(l_sc, l_bh->b_data + sizeof(struct gfs2_dinode));
+ if (sdp->sd_args.ar_statfs_percent) {
+ x = 100 * l_sc->sc_free;
+ y = m_sc->sc_free * sdp->sd_args.ar_statfs_percent;
+ if (x >= y || x <= -y)
+ need_sync = 1;
+ }
spin_unlock(&sdp->sd_statfs_spin);
brelse(l_bh);
+ if (need_sync)
+ gfs2_wake_up_statfs(sdp);
}
void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh,
@@ -484,8 +533,9 @@ void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh,
gfs2_statfs_change_out(m_sc, m_bh->b_data + sizeof(struct gfs2_dinode));
}
-int gfs2_statfs_sync(struct gfs2_sbd *sdp)
+int gfs2_statfs_sync(struct super_block *sb, int type)
{
+ struct gfs2_sbd *sdp = sb->s_fs_info;
struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode);
struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode);
struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master;
@@ -521,6 +571,7 @@ int gfs2_statfs_sync(struct gfs2_sbd *sdp)
goto out_bh2;
update_statfs(sdp, m_bh, l_bh);
+ sdp->sd_statfs_force_sync = 0;
gfs2_trans_end(sdp);
@@ -712,8 +763,8 @@ static int gfs2_make_fs_ro(struct gfs2_sbd *sdp)
int error;
flush_workqueue(gfs2_delete_workqueue);
- gfs2_quota_sync(sdp);
- gfs2_statfs_sync(sdp);
+ gfs2_quota_sync(sdp->sd_vfs, 0);
+ gfs2_statfs_sync(sdp->sd_vfs, 0);
error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE,
&t_gh);
@@ -1061,8 +1112,13 @@ static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data)
spin_lock(&gt->gt_spin);
args.ar_commit = gt->gt_log_flush_secs;
+ args.ar_quota_quantum = gt->gt_quota_quantum;
+ if (gt->gt_statfs_slow)
+ args.ar_statfs_quantum = 0;
+ else
+ args.ar_statfs_quantum = gt->gt_statfs_quantum;
spin_unlock(&gt->gt_spin);
- error = gfs2_mount_args(sdp, &args, data);
+ error = gfs2_mount_args(&args, data);
if (error)
return error;
@@ -1097,8 +1153,21 @@ static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data)
sb->s_flags |= MS_POSIXACL;
else
sb->s_flags &= ~MS_POSIXACL;
+ if (sdp->sd_args.ar_nobarrier)
+ set_bit(SDF_NOBARRIERS, &sdp->sd_flags);
+ else
+ clear_bit(SDF_NOBARRIERS, &sdp->sd_flags);
spin_lock(&gt->gt_spin);
gt->gt_log_flush_secs = args.ar_commit;
+ gt->gt_quota_quantum = args.ar_quota_quantum;
+ if (args.ar_statfs_quantum) {
+ gt->gt_statfs_slow = 0;
+ gt->gt_statfs_quantum = args.ar_statfs_quantum;
+ }
+ else {
+ gt->gt_statfs_slow = 1;
+ gt->gt_statfs_quantum = 30;
+ }
spin_unlock(&gt->gt_spin);
gfs2_online_uevent(sdp);
@@ -1179,7 +1248,7 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
{
struct gfs2_sbd *sdp = mnt->mnt_sb->s_fs_info;
struct gfs2_args *args = &sdp->sd_args;
- int lfsecs;
+ int val;
if (is_ancestor(mnt->mnt_root, sdp->sd_master_dir))
seq_printf(s, ",meta");
@@ -1240,9 +1309,17 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
}
if (args->ar_discard)
seq_printf(s, ",discard");
- lfsecs = sdp->sd_tune.gt_log_flush_secs;
- if (lfsecs != 60)
- seq_printf(s, ",commit=%d", lfsecs);
+ val = sdp->sd_tune.gt_log_flush_secs;
+ if (val != 60)
+ seq_printf(s, ",commit=%d", val);
+ val = sdp->sd_tune.gt_statfs_quantum;
+ if (val != 30)
+ seq_printf(s, ",statfs_quantum=%d", val);
+ val = sdp->sd_tune.gt_quota_quantum;
+ if (val != 60)
+ seq_printf(s, ",quota_quantum=%d", val);
+ if (args->ar_statfs_percent)
+ seq_printf(s, ",statfs_percent=%d", args->ar_statfs_percent);
if (args->ar_errors != GFS2_ERRORS_DEFAULT) {
const char *state;
@@ -1259,6 +1336,9 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
}
seq_printf(s, ",errors=%s", state);
}
+ if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags))
+ seq_printf(s, ",nobarrier");
+
return 0;
}
diff --git a/fs/gfs2/super.h b/fs/gfs2/super.h
index 235db3682885..3df60f2d84e3 100644
--- a/fs/gfs2/super.h
+++ b/fs/gfs2/super.h
@@ -27,7 +27,7 @@ static inline unsigned int gfs2_jindex_size(struct gfs2_sbd *sdp)
extern void gfs2_jindex_free(struct gfs2_sbd *sdp);
-extern int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *data);
+extern int gfs2_mount_args(struct gfs2_args *args, char *data);
extern struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid);
extern int gfs2_jdesc_check(struct gfs2_jdesc *jd);
@@ -44,7 +44,7 @@ extern void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc,
const void *buf);
extern void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh,
struct buffer_head *l_bh);
-extern int gfs2_statfs_sync(struct gfs2_sbd *sdp);
+extern int gfs2_statfs_sync(struct super_block *sb, int type);
extern int gfs2_freeze_fs(struct gfs2_sbd *sdp);
extern void gfs2_unfreeze_fs(struct gfs2_sbd *sdp);
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 446329728d52..c5dad1eb7b91 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -158,7 +158,7 @@ static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
if (simple_strtol(buf, NULL, 0) != 1)
return -EINVAL;
- gfs2_statfs_sync(sdp);
+ gfs2_statfs_sync(sdp->sd_vfs, 0);
return len;
}
@@ -171,13 +171,14 @@ static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
if (simple_strtol(buf, NULL, 0) != 1)
return -EINVAL;
- gfs2_quota_sync(sdp);
+ gfs2_quota_sync(sdp->sd_vfs, 0);
return len;
}
static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
+ int error;
u32 id;
if (!capable(CAP_SYS_ADMIN))
@@ -185,13 +186,14 @@ static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
id = simple_strtoul(buf, NULL, 0);
- gfs2_quota_refresh(sdp, 1, id);
- return len;
+ error = gfs2_quota_refresh(sdp, 1, id);
+ return error ? error : len;
}
static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
+ int error;
u32 id;
if (!capable(CAP_SYS_ADMIN))
@@ -199,8 +201,8 @@ static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
id = simple_strtoul(buf, NULL, 0);
- gfs2_quota_refresh(sdp, 0, id);
- return len;
+ error = gfs2_quota_refresh(sdp, 0, id);
+ return error ? error : len;
}
static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c
index 8a0f8ef6ee27..912f5cbc4740 100644
--- a/fs/gfs2/xattr.c
+++ b/fs/gfs2/xattr.c
@@ -186,8 +186,8 @@ static int ea_find_i(struct gfs2_inode *ip, struct buffer_head *bh,
return 0;
}
-int gfs2_ea_find(struct gfs2_inode *ip, int type, const char *name,
- struct gfs2_ea_location *el)
+static int gfs2_ea_find(struct gfs2_inode *ip, int type, const char *name,
+ struct gfs2_ea_location *el)
{
struct ea_find ef;
int error;
@@ -516,8 +516,8 @@ out:
return error;
}
-int gfs2_ea_get_copy(struct gfs2_inode *ip, struct gfs2_ea_location *el,
- char *data, size_t size)
+static int gfs2_ea_get_copy(struct gfs2_inode *ip, struct gfs2_ea_location *el,
+ char *data, size_t size)
{
int ret;
size_t len = GFS2_EA_DATA_LEN(el->el_ea);
@@ -534,6 +534,36 @@ int gfs2_ea_get_copy(struct gfs2_inode *ip, struct gfs2_ea_location *el,
return len;
}
+int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **ppdata)
+{
+ struct gfs2_ea_location el;
+ int error;
+ int len;
+ char *data;
+
+ error = gfs2_ea_find(ip, GFS2_EATYPE_SYS, name, &el);
+ if (error)
+ return error;
+ if (!el.el_ea)
+ goto out;
+ if (!GFS2_EA_DATA_LEN(el.el_ea))
+ goto out;
+
+ len = GFS2_EA_DATA_LEN(el.el_ea);
+ data = kmalloc(len, GFP_NOFS);
+ error = -ENOMEM;
+ if (data == NULL)
+ goto out;
+
+ error = gfs2_ea_get_copy(ip, &el, data, len);
+ if (error == 0)
+ error = len;
+ *ppdata = data;
+out:
+ brelse(el.el_bh);
+ return error;
+}
+
/**
* gfs2_xattr_get - Get a GFS2 extended attribute
* @inode: The inode
@@ -1259,22 +1289,26 @@ fail:
return error;
}
-int gfs2_ea_acl_chmod(struct gfs2_inode *ip, struct gfs2_ea_location *el,
- struct iattr *attr, char *data)
+int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data)
{
+ struct gfs2_ea_location el;
struct buffer_head *dibh;
int error;
- if (GFS2_EA_IS_STUFFED(el->el_ea)) {
+ error = gfs2_ea_find(ip, GFS2_EATYPE_SYS, GFS2_POSIX_ACL_ACCESS, &el);
+ if (error)
+ return error;
+
+ if (GFS2_EA_IS_STUFFED(el.el_ea)) {
error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0);
if (error)
return error;
- gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1);
- memcpy(GFS2_EA2DATA(el->el_ea), data,
- GFS2_EA_DATA_LEN(el->el_ea));
+ gfs2_trans_add_bh(ip->i_gl, el.el_bh, 1);
+ memcpy(GFS2_EA2DATA(el.el_ea), data,
+ GFS2_EA_DATA_LEN(el.el_ea));
} else
- error = ea_acl_chmod_unstuffed(ip, el->el_ea, data);
+ error = ea_acl_chmod_unstuffed(ip, el.el_ea, data);
if (error)
return error;
@@ -1507,18 +1541,6 @@ static int gfs2_xattr_user_set(struct inode *inode, const char *name,
return gfs2_xattr_set(inode, GFS2_EATYPE_USR, name, value, size, flags);
}
-static int gfs2_xattr_system_get(struct inode *inode, const char *name,
- void *buffer, size_t size)
-{
- return gfs2_xattr_get(inode, GFS2_EATYPE_SYS, name, buffer, size);
-}
-
-static int gfs2_xattr_system_set(struct inode *inode, const char *name,
- const void *value, size_t size, int flags)
-{
- return gfs2_xattr_set(inode, GFS2_EATYPE_SYS, name, value, size, flags);
-}
-
static int gfs2_xattr_security_get(struct inode *inode, const char *name,
void *buffer, size_t size)
{
@@ -1543,12 +1565,6 @@ static struct xattr_handler gfs2_xattr_security_handler = {
.set = gfs2_xattr_security_set,
};
-static struct xattr_handler gfs2_xattr_system_handler = {
- .prefix = XATTR_SYSTEM_PREFIX,
- .get = gfs2_xattr_system_get,
- .set = gfs2_xattr_system_set,
-};
-
struct xattr_handler *gfs2_xattr_handlers[] = {
&gfs2_xattr_user_handler,
&gfs2_xattr_security_handler,
diff --git a/fs/gfs2/xattr.h b/fs/gfs2/xattr.h
index cbdfd7743733..8d6ae5813c4d 100644
--- a/fs/gfs2/xattr.h
+++ b/fs/gfs2/xattr.h
@@ -62,11 +62,7 @@ extern int gfs2_ea_dealloc(struct gfs2_inode *ip);
/* Exported to acl.c */
-extern int gfs2_ea_find(struct gfs2_inode *ip, int type, const char *name,
- struct gfs2_ea_location *el);
-extern int gfs2_ea_get_copy(struct gfs2_inode *ip, struct gfs2_ea_location *el,
- char *data, size_t size);
-extern int gfs2_ea_acl_chmod(struct gfs2_inode *ip, struct gfs2_ea_location *el,
- struct iattr *attr, char *data);
+extern int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **data);
+extern int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data);
#endif /* __EATTR_DOT_H__ */
diff --git a/fs/quota/Kconfig b/fs/quota/Kconfig
index 8047e01ef46b..353e78a9ebee 100644
--- a/fs/quota/Kconfig
+++ b/fs/quota/Kconfig
@@ -17,7 +17,7 @@ config QUOTA
config QUOTA_NETLINK_INTERFACE
bool "Report quota messages through netlink interface"
- depends on QUOTA && NET
+ depends on QUOTACTL && NET
help
If you say Y here, quota warnings (about exceeding softlimit, reaching
hardlimit, etc.) will be reported through netlink interface. If unsure,
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 39b49c42a7ed..9b6ad908dcb2 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -77,10 +77,6 @@
#include <linux/capability.h>
#include <linux/quotaops.h>
#include <linux/writeback.h> /* for inode_lock, oddly enough.. */
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
-#include <net/netlink.h>
-#include <net/genetlink.h>
-#endif
#include <asm/uaccess.h>
@@ -1071,73 +1067,6 @@ static void print_warning(struct dquot *dquot, const int warntype)
}
#endif
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
-
-/* Netlink family structure for quota */
-static struct genl_family quota_genl_family = {
- .id = GENL_ID_GENERATE,
- .hdrsize = 0,
- .name = "VFS_DQUOT",
- .version = 1,
- .maxattr = QUOTA_NL_A_MAX,
-};
-
-/* Send warning to userspace about user which exceeded quota */
-static void send_warning(const struct dquot *dquot, const char warntype)
-{
- static atomic_t seq;
- struct sk_buff *skb;
- void *msg_head;
- int ret;
- int msg_size = 4 * nla_total_size(sizeof(u32)) +
- 2 * nla_total_size(sizeof(u64));
-
- /* We have to allocate using GFP_NOFS as we are called from a
- * filesystem performing write and thus further recursion into
- * the fs to free some data could cause deadlocks. */
- skb = genlmsg_new(msg_size, GFP_NOFS);
- if (!skb) {
- printk(KERN_ERR
- "VFS: Not enough memory to send quota warning.\n");
- return;
- }
- msg_head = genlmsg_put(skb, 0, atomic_add_return(1, &seq),
- &quota_genl_family, 0, QUOTA_NL_C_WARNING);
- if (!msg_head) {
- printk(KERN_ERR
- "VFS: Cannot store netlink header in quota warning.\n");
- goto err_out;
- }
- ret = nla_put_u32(skb, QUOTA_NL_A_QTYPE, dquot->dq_type);
- if (ret)
- goto attr_err_out;
- ret = nla_put_u64(skb, QUOTA_NL_A_EXCESS_ID, dquot->dq_id);
- if (ret)
- goto attr_err_out;
- ret = nla_put_u32(skb, QUOTA_NL_A_WARNING, warntype);
- if (ret)
- goto attr_err_out;
- ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MAJOR,
- MAJOR(dquot->dq_sb->s_dev));
- if (ret)
- goto attr_err_out;
- ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MINOR,
- MINOR(dquot->dq_sb->s_dev));
- if (ret)
- goto attr_err_out;
- ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current_uid());
- if (ret)
- goto attr_err_out;
- genlmsg_end(skb, msg_head);
-
- genlmsg_multicast(skb, 0, quota_genl_family.id, GFP_NOFS);
- return;
-attr_err_out:
- printk(KERN_ERR "VFS: Not enough space to compose quota message!\n");
-err_out:
- kfree_skb(skb);
-}
-#endif
/*
* Write warnings to the console and send warning messages over netlink.
*
@@ -1145,18 +1074,20 @@ err_out:
*/
static void flush_warnings(struct dquot *const *dquots, char *warntype)
{
+ struct dquot *dq;
int i;
- for (i = 0; i < MAXQUOTAS; i++)
- if (dquots[i] && warntype[i] != QUOTA_NL_NOWARN &&
- !warning_issued(dquots[i], warntype[i])) {
+ for (i = 0; i < MAXQUOTAS; i++) {
+ dq = dquots[i];
+ if (dq && warntype[i] != QUOTA_NL_NOWARN &&
+ !warning_issued(dq, warntype[i])) {
#ifdef CONFIG_PRINT_QUOTA_WARNING
- print_warning(dquots[i], warntype[i]);
-#endif
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
- send_warning(dquots[i], warntype[i]);
+ print_warning(dq, warntype[i]);
#endif
+ quota_send_warning(dq->dq_type, dq->dq_id,
+ dq->dq_sb->s_dev, warntype[i]);
}
+ }
}
static int ignore_hardlimit(struct dquot *dquot)
@@ -2607,12 +2538,6 @@ static int __init dquot_init(void)
register_shrinker(&dqcache_shrinker);
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
- if (genl_register_family(&quota_genl_family) != 0)
- printk(KERN_ERR
- "VFS: Failed to create quota netlink interface.\n");
-#endif
-
return 0;
}
module_init(dquot_init);
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 95c5b42384b2..ee91e2756950 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -18,6 +18,8 @@
#include <linux/capability.h>
#include <linux/quotaops.h>
#include <linux/types.h>
+#include <net/netlink.h>
+#include <net/genetlink.h>
/* Check validity of generic quotactl commands */
static int generic_quotactl_valid(struct super_block *sb, int type, int cmd,
@@ -525,3 +527,94 @@ asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special,
return ret;
}
#endif
+
+
+#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
+
+/* Netlink family structure for quota */
+static struct genl_family quota_genl_family = {
+ .id = GENL_ID_GENERATE,
+ .hdrsize = 0,
+ .name = "VFS_DQUOT",
+ .version = 1,
+ .maxattr = QUOTA_NL_A_MAX,
+};
+
+/**
+ * quota_send_warning - Send warning to userspace about exceeded quota
+ * @type: The quota type: USRQQUOTA, GRPQUOTA,...
+ * @id: The user or group id of the quota that was exceeded
+ * @dev: The device on which the fs is mounted (sb->s_dev)
+ * @warntype: The type of the warning: QUOTA_NL_...
+ *
+ * This can be used by filesystems (including those which don't use
+ * dquot) to send a message to userspace relating to quota limits.
+ *
+ */
+
+void quota_send_warning(short type, unsigned int id, dev_t dev,
+ const char warntype)
+{
+ static atomic_t seq;
+ struct sk_buff *skb;
+ void *msg_head;
+ int ret;
+ int msg_size = 4 * nla_total_size(sizeof(u32)) +
+ 2 * nla_total_size(sizeof(u64));
+
+ /* We have to allocate using GFP_NOFS as we are called from a
+ * filesystem performing write and thus further recursion into
+ * the fs to free some data could cause deadlocks. */
+ skb = genlmsg_new(msg_size, GFP_NOFS);
+ if (!skb) {
+ printk(KERN_ERR
+ "VFS: Not enough memory to send quota warning.\n");
+ return;
+ }
+ msg_head = genlmsg_put(skb, 0, atomic_add_return(1, &seq),
+ &quota_genl_family, 0, QUOTA_NL_C_WARNING);
+ if (!msg_head) {
+ printk(KERN_ERR
+ "VFS: Cannot store netlink header in quota warning.\n");
+ goto err_out;
+ }
+ ret = nla_put_u32(skb, QUOTA_NL_A_QTYPE, type);
+ if (ret)
+ goto attr_err_out;
+ ret = nla_put_u64(skb, QUOTA_NL_A_EXCESS_ID, id);
+ if (ret)
+ goto attr_err_out;
+ ret = nla_put_u32(skb, QUOTA_NL_A_WARNING, warntype);
+ if (ret)
+ goto attr_err_out;
+ ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MAJOR, MAJOR(dev));
+ if (ret)
+ goto attr_err_out;
+ ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MINOR, MINOR(dev));
+ if (ret)
+ goto attr_err_out;
+ ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current_uid());
+ if (ret)
+ goto attr_err_out;
+ genlmsg_end(skb, msg_head);
+
+ genlmsg_multicast(skb, 0, quota_genl_family.id, GFP_NOFS);
+ return;
+attr_err_out:
+ printk(KERN_ERR "VFS: Not enough space to compose quota message!\n");
+err_out:
+ kfree_skb(skb);
+}
+EXPORT_SYMBOL(quota_send_warning);
+
+static int __init quota_init(void)
+{
+ if (genl_register_family(&quota_genl_family) != 0)
+ printk(KERN_ERR
+ "VFS: Failed to create quota netlink interface.\n");
+ return 0;
+};
+
+module_init(quota_init);
+#endif
+
diff --git a/fs/xattr_acl.c b/fs/xattr_acl.c
index c6ad7c7e3ee9..05ac0fe9c4d3 100644
--- a/fs/xattr_acl.c
+++ b/fs/xattr_acl.c
@@ -36,7 +36,7 @@ posix_acl_from_xattr(const void *value, size_t size)
if (count == 0)
return NULL;
- acl = posix_acl_alloc(count, GFP_KERNEL);
+ acl = posix_acl_alloc(count, GFP_NOFS);
if (!acl)
return ERR_PTR(-ENOMEM);
acl_e = acl->a_entries;
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-30 04:05:23 +0000