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authorLinus Torvalds <torvalds@linux-foundation.org>2020-12-21 10:28:02 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-21 10:28:02 -0800
commit70990afa34fbac03ade78e2ad0ccd418acecfc04 (patch)
tree3d160f121cdbb6bd7353d0179ee65ebd7761167f /fs
parente37b12e4bb21e7c81732370b0a2b34bd196f380b (diff)
parentcfd1d0f524a87b7d6d14b41a14fa4cbe522cf8cc (diff)
Merge tag '9p-for-5.11-rc1' of git://github.com/martinetd/linux
Pull 9p update from Dominique Martinet: - fix long-standing limitation on open-unlink-fop pattern - add refcount to p9_fid (fixes the above and will allow for more cleanups and simplifications in the future) * tag '9p-for-5.11-rc1' of git://github.com/martinetd/linux: 9p: Remove unnecessary IS_ERR() check 9p: Uninitialized variable in v9fs_writeback_fid() 9p: Fix writeback fid incorrectly being attached to dentry 9p: apply review requests for fid refcounting 9p: add refcount to p9_fid struct fs/9p: search open fids first fs/9p: track open fids fs/9p: fix create-unlink-getattr idiom
Diffstat (limited to 'fs')
-rw-r--r--fs/9p/fid.c65
-rw-r--r--fs/9p/fid.h11
-rw-r--r--fs/9p/vfs_dentry.c2
-rw-r--r--fs/9p/vfs_dir.c6
-rw-r--r--fs/9p/vfs_file.c7
-rw-r--r--fs/9p/vfs_inode.c47
-rw-r--r--fs/9p/vfs_inode_dotl.c35
-rw-r--r--fs/9p/vfs_super.c1
-rw-r--r--fs/9p/xattr.c16
9 files changed, 162 insertions, 28 deletions
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index 3d681a2c2731..9d9de62592be 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -39,6 +39,48 @@ void v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid)
}
/**
+ * v9fs_fid_find_inode - search for an open fid off of the inode list
+ * @inode: return a fid pointing to a specific inode
+ * @uid: return a fid belonging to the specified user
+ *
+ */
+
+static struct p9_fid *v9fs_fid_find_inode(struct inode *inode, kuid_t uid)
+{
+ struct hlist_head *h;
+ struct p9_fid *fid, *ret = NULL;
+
+ p9_debug(P9_DEBUG_VFS, " inode: %p\n", inode);
+
+ spin_lock(&inode->i_lock);
+ h = (struct hlist_head *)&inode->i_private;
+ hlist_for_each_entry(fid, h, ilist) {
+ if (uid_eq(fid->uid, uid)) {
+ refcount_inc(&fid->count);
+ ret = fid;
+ break;
+ }
+ }
+ spin_unlock(&inode->i_lock);
+ return ret;
+}
+
+/**
+ * v9fs_open_fid_add - add an open fid to an inode
+ * @dentry: inode that the fid is being added to
+ * @fid: fid to add
+ *
+ */
+
+void v9fs_open_fid_add(struct inode *inode, struct p9_fid *fid)
+{
+ spin_lock(&inode->i_lock);
+ hlist_add_head(&fid->ilist, (struct hlist_head *)&inode->i_private);
+ spin_unlock(&inode->i_lock);
+}
+
+
+/**
* v9fs_fid_find - retrieve a fid that belongs to the specified uid
* @dentry: dentry to look for fid in
* @uid: return fid that belongs to the specified user
@@ -54,13 +96,18 @@ static struct p9_fid *v9fs_fid_find(struct dentry *dentry, kuid_t uid, int any)
dentry, dentry, from_kuid(&init_user_ns, uid),
any);
ret = NULL;
+
+ if (d_inode(dentry))
+ ret = v9fs_fid_find_inode(d_inode(dentry), uid);
+
/* we'll recheck under lock if there's anything to look in */
- if (dentry->d_fsdata) {
+ if (!ret && dentry->d_fsdata) {
struct hlist_head *h = (struct hlist_head *)&dentry->d_fsdata;
spin_lock(&dentry->d_lock);
hlist_for_each_entry(fid, h, dlist) {
if (any || uid_eq(fid->uid, uid)) {
ret = fid;
+ refcount_inc(&ret->count);
break;
}
}
@@ -122,7 +169,10 @@ static struct p9_fid *v9fs_fid_lookup_with_uid(struct dentry *dentry,
fid = v9fs_fid_find(ds, uid, any);
if (fid) {
/* Found the parent fid do a lookup with that */
- fid = p9_client_walk(fid, 1, &dentry->d_name.name, 1);
+ struct p9_fid *ofid = fid;
+
+ fid = p9_client_walk(ofid, 1, &dentry->d_name.name, 1);
+ p9_client_clunk(ofid);
goto fid_out;
}
up_read(&v9ses->rename_sem);
@@ -147,8 +197,10 @@ static struct p9_fid *v9fs_fid_lookup_with_uid(struct dentry *dentry,
v9fs_fid_add(dentry->d_sb->s_root, fid);
}
/* If we are root ourself just return that */
- if (dentry->d_sb->s_root == dentry)
+ if (dentry->d_sb->s_root == dentry) {
+ refcount_inc(&fid->count);
return fid;
+ }
/*
* Do a multipath walk with attached root.
* When walking parent we need to make sure we
@@ -195,6 +247,7 @@ fid_out:
fid = ERR_PTR(-ENOENT);
} else {
__add_fid(dentry, fid);
+ refcount_inc(&fid->count);
spin_unlock(&dentry->d_lock);
}
}
@@ -245,11 +298,13 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
struct p9_fid *v9fs_writeback_fid(struct dentry *dentry)
{
int err;
- struct p9_fid *fid;
+ struct p9_fid *fid, *ofid;
- fid = clone_fid(v9fs_fid_lookup_with_uid(dentry, GLOBAL_ROOT_UID, 0));
+ ofid = v9fs_fid_lookup_with_uid(dentry, GLOBAL_ROOT_UID, 0);
+ fid = clone_fid(ofid);
if (IS_ERR(fid))
goto error_out;
+ p9_client_clunk(ofid);
/*
* writeback fid will only be used to write back the
* dirty pages. We always request for the open fid in read-write
diff --git a/fs/9p/fid.h b/fs/9p/fid.h
index 928b1093f511..f7f33509e169 100644
--- a/fs/9p/fid.h
+++ b/fs/9p/fid.h
@@ -15,12 +15,21 @@ static inline struct p9_fid *v9fs_parent_fid(struct dentry *dentry)
}
void v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid);
struct p9_fid *v9fs_writeback_fid(struct dentry *dentry);
+void v9fs_open_fid_add(struct inode *inode, struct p9_fid *fid);
static inline struct p9_fid *clone_fid(struct p9_fid *fid)
{
return IS_ERR(fid) ? fid : p9_client_walk(fid, 0, NULL, 1);
}
static inline struct p9_fid *v9fs_fid_clone(struct dentry *dentry)
{
- return clone_fid(v9fs_fid_lookup(dentry));
+ struct p9_fid *fid, *nfid;
+
+ fid = v9fs_fid_lookup(dentry);
+ if (!fid || IS_ERR(fid))
+ return fid;
+
+ nfid = clone_fid(fid);
+ p9_client_clunk(fid);
+ return nfid;
}
#endif
diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c
index 7d6f69aefd45..4b4292123b3d 100644
--- a/fs/9p/vfs_dentry.c
+++ b/fs/9p/vfs_dentry.c
@@ -85,6 +85,8 @@ static int v9fs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
retval = v9fs_refresh_inode_dotl(fid, inode);
else
retval = v9fs_refresh_inode(fid, inode);
+ p9_client_clunk(fid);
+
if (retval == -ENOENT)
return 0;
if (retval < 0)
diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index 674d22bf4f6f..b6a5a0be444d 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -210,8 +210,12 @@ int v9fs_dir_release(struct inode *inode, struct file *filp)
fid = filp->private_data;
p9_debug(P9_DEBUG_VFS, "inode: %p filp: %p fid: %d\n",
inode, filp, fid ? fid->fid : -1);
- if (fid)
+ if (fid) {
+ spin_lock(&inode->i_lock);
+ hlist_del(&fid->ilist);
+ spin_unlock(&inode->i_lock);
p9_client_clunk(fid);
+ }
return 0;
}
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index be5768949cb1..649f04f112dc 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -46,7 +46,7 @@ int v9fs_file_open(struct inode *inode, struct file *file)
int err;
struct v9fs_inode *v9inode;
struct v9fs_session_info *v9ses;
- struct p9_fid *fid;
+ struct p9_fid *fid, *writeback_fid;
int omode;
p9_debug(P9_DEBUG_VFS, "inode: %p file: %p\n", inode, file);
@@ -85,17 +85,18 @@ int v9fs_file_open(struct inode *inode, struct file *file)
* because we want write after unlink usecase
* to work.
*/
- fid = v9fs_writeback_fid(file_dentry(file));
+ writeback_fid = v9fs_writeback_fid(file_dentry(file));
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
mutex_unlock(&v9inode->v_mutex);
goto out_error;
}
- v9inode->writeback_fid = (void *) fid;
+ v9inode->writeback_fid = (void *) writeback_fid;
}
mutex_unlock(&v9inode->v_mutex);
if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
v9fs_cache_inode_set_cookie(inode, file);
+ v9fs_open_fid_add(inode, fid);
return 0;
out_error:
p9_client_clunk(file->private_data);
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index ae0c38ad1fcb..4a937fac1acb 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -256,6 +256,7 @@ int v9fs_init_inode(struct v9fs_session_info *v9ses,
inode->i_rdev = rdev;
inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
inode->i_mapping->a_ops = &v9fs_addr_operations;
+ inode->i_private = NULL;
switch (mode & S_IFMT) {
case S_IFIFO:
@@ -550,6 +551,7 @@ static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags)
if (v9fs_proto_dotl(v9ses))
retval = p9_client_unlinkat(dfid, dentry->d_name.name,
v9fs_at_to_dotl_flags(flags));
+ p9_client_clunk(dfid);
if (retval == -EOPNOTSUPP) {
/* Try the one based on path */
v9fid = v9fs_fid_clone(dentry);
@@ -570,6 +572,10 @@ static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags)
v9fs_invalidate_inode_attr(inode);
v9fs_invalidate_inode_attr(dir);
+
+ /* invalidate all fids associated with dentry */
+ /* NOTE: This will not include open fids */
+ dentry->d_op->d_release(dentry);
}
return retval;
}
@@ -590,14 +596,12 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir,
{
int err;
const unsigned char *name;
- struct p9_fid *dfid, *ofid, *fid;
+ struct p9_fid *dfid, *ofid = NULL, *fid = NULL;
struct inode *inode;
p9_debug(P9_DEBUG_VFS, "name %pd\n", dentry);
err = 0;
- ofid = NULL;
- fid = NULL;
name = dentry->d_name.name;
dfid = v9fs_parent_fid(dentry);
if (IS_ERR(dfid)) {
@@ -611,12 +615,14 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir,
if (IS_ERR(ofid)) {
err = PTR_ERR(ofid);
p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
+ p9_client_clunk(dfid);
return ERR_PTR(err);
}
err = p9_client_fcreate(ofid, name, perm, mode, extension);
if (err < 0) {
p9_debug(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err);
+ p9_client_clunk(dfid);
goto error;
}
@@ -628,6 +634,7 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir,
p9_debug(P9_DEBUG_VFS,
"p9_client_walk failed %d\n", err);
fid = NULL;
+ p9_client_clunk(dfid);
goto error;
}
/*
@@ -638,11 +645,13 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir,
err = PTR_ERR(inode);
p9_debug(P9_DEBUG_VFS,
"inode creation failed %d\n", err);
+ p9_client_clunk(dfid);
goto error;
}
v9fs_fid_add(dentry, fid);
d_instantiate(dentry, inode);
}
+ p9_client_clunk(dfid);
return ofid;
error:
if (ofid)
@@ -755,6 +764,7 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
*/
name = dentry->d_name.name;
fid = p9_client_walk(dfid, 1, &name, 1);
+ p9_client_clunk(dfid);
if (fid == ERR_PTR(-ENOENT))
inode = NULL;
else if (IS_ERR(fid))
@@ -792,6 +802,7 @@ v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry,
struct v9fs_session_info *v9ses;
struct p9_fid *fid, *inode_fid;
struct dentry *res = NULL;
+ struct inode *inode;
if (d_in_lookup(dentry)) {
res = v9fs_vfs_lookup(dir, dentry, 0);
@@ -820,7 +831,8 @@ v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry,
}
v9fs_invalidate_inode_attr(dir);
- v9inode = V9FS_I(d_inode(dentry));
+ inode = d_inode(dentry);
+ v9inode = V9FS_I(inode);
mutex_lock(&v9inode->v_mutex);
if ((v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) &&
!v9inode->writeback_fid &&
@@ -848,6 +860,7 @@ v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry,
file->private_data = fid;
if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
v9fs_cache_inode_set_cookie(d_inode(dentry), file);
+ v9fs_open_fid_add(inode, fid);
file->f_mode |= FMODE_CREATED;
out:
@@ -902,7 +915,7 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *old_inode;
struct inode *new_inode;
struct v9fs_session_info *v9ses;
- struct p9_fid *oldfid;
+ struct p9_fid *oldfid, *dfid;
struct p9_fid *olddirfid;
struct p9_fid *newdirfid;
struct p9_wstat wstat;
@@ -919,13 +932,20 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (IS_ERR(oldfid))
return PTR_ERR(oldfid);
- olddirfid = clone_fid(v9fs_parent_fid(old_dentry));
+ dfid = v9fs_parent_fid(old_dentry);
+ olddirfid = clone_fid(dfid);
+ if (dfid && !IS_ERR(dfid))
+ p9_client_clunk(dfid);
+
if (IS_ERR(olddirfid)) {
retval = PTR_ERR(olddirfid);
goto done;
}
- newdirfid = clone_fid(v9fs_parent_fid(new_dentry));
+ dfid = v9fs_parent_fid(new_dentry);
+ newdirfid = clone_fid(dfid);
+ p9_client_clunk(dfid);
+
if (IS_ERR(newdirfid)) {
retval = PTR_ERR(newdirfid);
goto clunk_olddir;
@@ -982,6 +1002,7 @@ clunk_olddir:
p9_client_clunk(olddirfid);
done:
+ p9_client_clunk(oldfid);
return retval;
}
@@ -1014,6 +1035,7 @@ v9fs_vfs_getattr(const struct path *path, struct kstat *stat,
return PTR_ERR(fid);
st = p9_client_stat(fid);
+ p9_client_clunk(fid);
if (IS_ERR(st))
return PTR_ERR(st);
@@ -1034,7 +1056,7 @@ v9fs_vfs_getattr(const struct path *path, struct kstat *stat,
static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
{
- int retval;
+ int retval, use_dentry = 0;
struct v9fs_session_info *v9ses;
struct p9_fid *fid = NULL;
struct p9_wstat wstat;
@@ -1050,8 +1072,10 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
fid = iattr->ia_file->private_data;
WARN_ON(!fid);
}
- if (!fid)
+ if (!fid) {
fid = v9fs_fid_lookup(dentry);
+ use_dentry = 1;
+ }
if(IS_ERR(fid))
return PTR_ERR(fid);
@@ -1081,6 +1105,10 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
filemap_write_and_wait(d_inode(dentry)->i_mapping);
retval = p9_client_wstat(fid, &wstat);
+
+ if (use_dentry)
+ p9_client_clunk(fid);
+
if (retval < 0)
return retval;
@@ -1205,6 +1233,7 @@ static const char *v9fs_vfs_get_link(struct dentry *dentry,
return ERR_PTR(-EBADF);
st = p9_client_stat(fid);
+ p9_client_clunk(fid);
if (IS_ERR(st))
return ERR_CAST(st);
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index 0028eccb665a..823c2eb5f1bf 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -296,6 +296,7 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
/* instantiate inode and assign the unopened fid to the dentry */
fid = p9_client_walk(dfid, 1, &name, 1);
+ p9_client_clunk(dfid);
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
@@ -342,6 +343,7 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
file->private_data = ofid;
if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
v9fs_cache_inode_set_cookie(inode, file);
+ v9fs_open_fid_add(inode, ofid);
file->f_mode |= FMODE_CREATED;
out:
v9fs_put_acl(dacl, pacl);
@@ -407,7 +409,6 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
err = p9_client_mkdir_dotl(dfid, name, mode, gid, &qid);
if (err < 0)
goto error;
-
fid = p9_client_walk(dfid, 1, &name, 1);
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
@@ -451,6 +452,7 @@ error:
if (fid)
p9_client_clunk(fid);
v9fs_put_acl(dacl, pacl);
+ p9_client_clunk(dfid);
return err;
}
@@ -478,6 +480,7 @@ v9fs_vfs_getattr_dotl(const struct path *path, struct kstat *stat,
*/
st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
+ p9_client_clunk(fid);
if (IS_ERR(st))
return PTR_ERR(st);
@@ -539,7 +542,7 @@ static int v9fs_mapped_iattr_valid(int iattr_valid)
int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
{
- int retval;
+ int retval, use_dentry = 0;
struct p9_fid *fid = NULL;
struct p9_iattr_dotl p9attr;
struct inode *inode = d_inode(dentry);
@@ -564,8 +567,10 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
fid = iattr->ia_file->private_data;
WARN_ON(!fid);
}
- if (!fid)
+ if (!fid) {
fid = v9fs_fid_lookup(dentry);
+ use_dentry = 1;
+ }
if (IS_ERR(fid))
return PTR_ERR(fid);
@@ -574,8 +579,11 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
filemap_write_and_wait(inode->i_mapping);
retval = p9_client_setattr(fid, &p9attr);
- if (retval < 0)
+ if (retval < 0) {
+ if (use_dentry)
+ p9_client_clunk(fid);
return retval;
+ }
if ((iattr->ia_valid & ATTR_SIZE) &&
iattr->ia_size != i_size_read(inode))
@@ -587,9 +595,15 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
if (iattr->ia_valid & ATTR_MODE) {
/* We also want to update ACL when we update mode bits */
retval = v9fs_acl_chmod(inode, fid);
- if (retval < 0)
+ if (retval < 0) {
+ if (use_dentry)
+ p9_client_clunk(fid);
return retval;
+ }
}
+ if (use_dentry)
+ p9_client_clunk(fid);
+
return 0;
}
@@ -741,6 +755,7 @@ error:
if (fid)
p9_client_clunk(fid);
+ p9_client_clunk(dfid);
return err;
}
@@ -769,11 +784,15 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
return PTR_ERR(dfid);
oldfid = v9fs_fid_lookup(old_dentry);
- if (IS_ERR(oldfid))
+ if (IS_ERR(oldfid)) {
+ p9_client_clunk(dfid);
return PTR_ERR(oldfid);
+ }
err = p9_client_link(dfid, oldfid, dentry->d_name.name);
+ p9_client_clunk(dfid);
+ p9_client_clunk(oldfid);
if (err < 0) {
p9_debug(P9_DEBUG_VFS, "p9_client_link failed %d\n", err);
return err;
@@ -788,6 +807,7 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
return PTR_ERR(fid);
v9fs_refresh_inode_dotl(fid, d_inode(old_dentry));
+ p9_client_clunk(fid);
}
ihold(d_inode(old_dentry));
d_instantiate(dentry, d_inode(old_dentry));
@@ -886,6 +906,8 @@ error:
if (fid)
p9_client_clunk(fid);
v9fs_put_acl(dacl, pacl);
+ p9_client_clunk(dfid);
+
return err;
}
@@ -914,6 +936,7 @@ v9fs_vfs_get_link_dotl(struct dentry *dentry,
if (IS_ERR(fid))
return ERR_CAST(fid);
retval = p9_client_readlink(fid, &target);
+ p9_client_clunk(fid);
if (retval)
return ERR_PTR(retval);
set_delayed_call(done, kfree_link, target);
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 9a21269b7234..5fce6e30bc5a 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -268,6 +268,7 @@ static int v9fs_statfs(struct dentry *dentry, struct kstatfs *buf)
}
res = simple_statfs(dentry, buf);
done:
+ p9_client_clunk(fid);
return res;
}
diff --git a/fs/9p/xattr.c b/fs/9p/xattr.c
index ac8ff8ca4c11..87217dd0433e 100644
--- a/fs/9p/xattr.c
+++ b/fs/9p/xattr.c
@@ -71,14 +71,17 @@ ssize_t v9fs_xattr_get(struct dentry *dentry, const char *name,
void *buffer, size_t buffer_size)
{
struct p9_fid *fid;
+ int ret;
p9_debug(P9_DEBUG_VFS, "name = %s value_len = %zu\n",
name, buffer_size);
fid = v9fs_fid_lookup(dentry);
if (IS_ERR(fid))
return PTR_ERR(fid);
+ ret = v9fs_fid_xattr_get(fid, name, buffer, buffer_size);
+ p9_client_clunk(fid);
- return v9fs_fid_xattr_get(fid, name, buffer, buffer_size);
+ return ret;
}
/*
@@ -96,8 +99,15 @@ ssize_t v9fs_xattr_get(struct dentry *dentry, const char *name,
int v9fs_xattr_set(struct dentry *dentry, const char *name,
const void *value, size_t value_len, int flags)
{
- struct p9_fid *fid = v9fs_fid_lookup(dentry);
- return v9fs_fid_xattr_set(fid, name, value, value_len, flags);
+ int ret;
+ struct p9_fid *fid;
+
+ fid = v9fs_fid_lookup(dentry);
+ if (IS_ERR(fid))
+ return PTR_ERR(fid);
+ ret = v9fs_fid_xattr_set(fid, name, value, value_len, flags);
+ p9_client_clunk(fid);
+ return ret;
}
int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name,