Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull misc vfs updates from Al Viro:
 "Assorted stuff, including Christoph's I_DIRTY patches"

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fs: move I_DIRTY_INODE to fs.h
  ubifs: fix bogus __mark_inode_dirty(I_DIRTY_SYNC | I_DIRTY_DATASYNC) call
  ntfs: fix bogus __mark_inode_dirty(I_DIRTY_SYNC | I_DIRTY_DATASYNC) call
  gfs2: fix bogus __mark_inode_dirty(I_DIRTY_SYNC | I_DIRTY_DATASYNC) calls
  fs: fold open_check_o_direct into do_dentry_open
  vfs: Replace stray non-ASCII homoglyph characters with their ASCII equivalents
  vfs: make sure struct filename->iname is word-aligned
  get rid of pointless includes of fs_struct.h
  [poll] annotate SAA6588_CMD_POLL users

22 files changed, 46 insertions, 65 deletions

diff --git a/arch/arc/kernel/troubleshoot.c b/arch/arc/kernel/troubleshoot.c
index 6e9a0a9a6a04..783b20354f8b 100644
--- a/arch/arc/kernel/troubleshoot.c
+++ b/arch/arc/kernel/troubleshoot.c
@@ -10,7 +10,6 @@
 #include <linux/mm.h>
 #include <linux/fs.h>
 #include <linux/kdev_t.h>
-#include <linux/fs_struct.h>
 #include <linux/proc_fs.h>
 #include <linux/file.h>
 #include <linux/sched/mm.h>
diff --git a/drivers/media/i2c/saa6588.c b/drivers/media/i2c/saa6588.c
index c3089bd34df2..33d2987f9555 100644
--- a/drivers/media/i2c/saa6588.c
+++ b/drivers/media/i2c/saa6588.c
@@ -411,9 +411,9 @@ static long saa6588_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
 		break;
 		/* --- poll() for /dev/radio --- */
 	case SAA6588_CMD_POLL:
-		a->result = 0;
+		a->poll_mask = 0;
 		if (s->data_available_for_read)
-			a->result |= EPOLLIN | EPOLLRDNORM;
+			a->poll_mask |= EPOLLIN | EPOLLRDNORM;
 		poll_wait(a->instance, &s->read_queue, a->event_list);
 		break;
 
diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c
index f697698fe38d..707f57a9f940 100644
--- a/drivers/media/pci/bt8xx/bttv-driver.c
+++ b/drivers/media/pci/bt8xx/bttv-driver.c
@@ -3344,10 +3344,10 @@ static __poll_t radio_poll(struct file *file, poll_table *wait)
 	radio_enable(btv);
 	cmd.instance = file;
 	cmd.event_list = wait;
-	cmd.result = res;
+	cmd.poll_mask = res;
 	bttv_call_all(btv, core, ioctl, SAA6588_CMD_POLL, &cmd);
 
-	return cmd.result;
+	return cmd.poll_mask;
 }
 
 static const struct v4l2_file_operations radio_fops =
diff --git a/drivers/media/pci/saa7134/saa7134-video.c b/drivers/media/pci/saa7134/saa7134-video.c
index 4f1091a11e91..1a50ec9d084f 100644
--- a/drivers/media/pci/saa7134/saa7134-video.c
+++ b/drivers/media/pci/saa7134/saa7134-video.c
@@ -1235,12 +1235,12 @@ static __poll_t radio_poll(struct file *file, poll_table *wait)
 
 	cmd.instance = file;
 	cmd.event_list = wait;
-	cmd.result = 0;
+	cmd.poll_mask = 0;
 	mutex_lock(&dev->lock);
 	saa_call_all(dev, core, ioctl, SAA6588_CMD_POLL, &cmd);
 	mutex_unlock(&dev->lock);
 
-	return rc | cmd.result;
+	return rc | cmd.poll_mask;
 }
 
 /* ------------------------------------------------------------------ */
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index f1d9c6cc0491..2bdd561c4c68 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -2,7 +2,6 @@
 #include <linux/ceph/ceph_debug.h>
 
 #include <linux/spinlock.h>
-#include <linux/fs_struct.h>
 #include <linux/namei.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 18aa2ef963ad..129205028300 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -5024,12 +5024,12 @@ static int other_inode_match(struct inode * inode, unsigned long ino,
 
 	if ((inode->i_ino != ino) ||
 	    (inode->i_state & (I_FREEING | I_WILL_FREE | I_NEW |
-			       I_DIRTY_SYNC | I_DIRTY_DATASYNC)) ||
+			       I_DIRTY_INODE)) ||
 	    ((inode->i_state & I_DIRTY_TIME) == 0))
 		return 0;
 	spin_lock(&inode->i_lock);
 	if (((inode->i_state & (I_FREEING | I_WILL_FREE | I_NEW |
-				I_DIRTY_SYNC | I_DIRTY_DATASYNC)) == 0) &&
+				I_DIRTY_INODE)) == 0) &&
 	    (inode->i_state & I_DIRTY_TIME)) {
 		struct ext4_inode_info	*ei = EXT4_I(inode);
 
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index d4d04fee568a..1280f915079b 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -1343,7 +1343,7 @@ __writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
 
 	dirty = inode->i_state & I_DIRTY;
 	if (inode->i_state & I_DIRTY_TIME) {
-		if ((dirty & (I_DIRTY_SYNC | I_DIRTY_DATASYNC)) ||
+		if ((dirty & I_DIRTY_INODE) ||
 		    wbc->sync_mode == WB_SYNC_ALL ||
 		    unlikely(inode->i_state & I_DIRTY_TIME_EXPIRED) ||
 		    unlikely(time_after(jiffies,
@@ -2112,7 +2112,6 @@ static noinline void block_dump___mark_inode_dirty(struct inode *inode)
  */
 void __mark_inode_dirty(struct inode *inode, int flags)
 {
-#define I_DIRTY_INODE (I_DIRTY_SYNC | I_DIRTY_DATASYNC)
 	struct super_block *sb = inode->i_sb;
 	int dirtytime;
 
@@ -2122,7 +2121,7 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 	 * Don't do this for I_DIRTY_PAGES - that doesn't actually
 	 * dirty the inode itself
 	 */
-	if (flags & (I_DIRTY_SYNC | I_DIRTY_DATASYNC | I_DIRTY_TIME)) {
+	if (flags & (I_DIRTY_INODE | I_DIRTY_TIME)) {
 		trace_writeback_dirty_inode_start(inode, flags);
 
 		if (sb->s_op->dirty_inode)
@@ -2197,7 +2196,7 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 			if (dirtytime)
 				inode->dirtied_time_when = jiffies;
 
-			if (inode->i_state & (I_DIRTY_INODE | I_DIRTY_PAGES))
+			if (inode->i_state & I_DIRTY)
 				dirty_list = &wb->b_dirty;
 			else
 				dirty_list = &wb->b_dirty_time;
@@ -2221,8 +2220,6 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 	}
 out_unlock_inode:
 	spin_unlock(&inode->i_lock);
-
-#undef I_DIRTY_INODE
 }
 EXPORT_SYMBOL(__mark_inode_dirty);
 
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 620be0521866..cf5c7f3080d2 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -800,7 +800,7 @@ static void gfs2_dirty_inode(struct inode *inode, int flags)
 	int need_endtrans = 0;
 	int ret;
 
-	if (!(flags & (I_DIRTY_DATASYNC|I_DIRTY_SYNC)))
+	if (!(flags & I_DIRTY_INODE))
 		return;
 	if (unlikely(test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
 		return;
diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c
index 05de20954659..f2bce1e0f6fb 100644
--- a/fs/gfs2/xattr.c
+++ b/fs/gfs2/xattr.c
@@ -308,7 +308,7 @@ static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
 	}
 
 	ip->i_inode.i_ctime = current_time(&ip->i_inode);
-	__mark_inode_dirty(&ip->i_inode, I_DIRTY_SYNC | I_DIRTY_DATASYNC);
+	__mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC);
 
 	gfs2_trans_end(sdp);
 
@@ -768,7 +768,7 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er,
 		goto out_end_trans;
 
 	ip->i_inode.i_ctime = current_time(&ip->i_inode);
-	__mark_inode_dirty(&ip->i_inode, I_DIRTY_SYNC | I_DIRTY_DATASYNC);
+	__mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC);
 
 out_end_trans:
 	gfs2_trans_end(GFS2_SB(&ip->i_inode));
@@ -896,7 +896,7 @@ static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh,
 		ea_set_remove_stuffed(ip, es->es_el);
 
 	ip->i_inode.i_ctime = current_time(&ip->i_inode);
-	__mark_inode_dirty(&ip->i_inode, I_DIRTY_SYNC | I_DIRTY_DATASYNC);
+	__mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC);
 
 	gfs2_trans_end(GFS2_SB(&ip->i_inode));
 	return error;
@@ -1114,7 +1114,7 @@ static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el)
 	}
 
 	ip->i_inode.i_ctime = current_time(&ip->i_inode);
-	__mark_inode_dirty(&ip->i_inode, I_DIRTY_SYNC | I_DIRTY_DATASYNC);
+	__mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC);
 
 	gfs2_trans_end(GFS2_SB(&ip->i_inode));
 
diff --git a/fs/internal.h b/fs/internal.h
index 980d005b21b4..e08972db0303 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -125,7 +125,6 @@ int do_fchmodat(int dfd, const char __user *filename, umode_t mode);
 int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
 		int flag);
 
-extern int open_check_o_direct(struct file *f);
 extern int vfs_open(const struct path *, struct file *, const struct cred *);
 extern struct file *filp_clone_open(struct file *);
 
diff --git a/fs/namei.c b/fs/namei.c
index a09419379f5d..5661da1972cd 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -39,6 +39,7 @@
 #include <linux/bitops.h>
 #include <linux/init_task.h>
 #include <linux/uaccess.h>
+#include <linux/build_bug.h>
 
 #include "internal.h"
 #include "mount.h"
@@ -130,6 +131,7 @@ getname_flags(const char __user *filename, int flags, int *empty)
 	struct filename *result;
 	char *kname;
 	int len;
+	BUILD_BUG_ON(offsetof(struct filename, iname) % sizeof(long) != 0);
 
 	result = audit_reusename(filename);
 	if (result)
@@ -3374,9 +3376,7 @@ finish_open_created:
 		goto out;
 	*opened |= FILE_OPENED;
 opened:
-	error = open_check_o_direct(file);
-	if (!error)
-		error = ima_file_check(file, op->acc_mode, *opened);
+	error = ima_file_check(file, op->acc_mode, *opened);
 	if (!error && will_truncate)
 		error = handle_truncate(file);
 out:
@@ -3456,9 +3456,6 @@ static int do_tmpfile(struct nameidata *nd, unsigned flags,
 	error = finish_open(file, child, NULL, opened);
 	if (error)
 		goto out2;
-	error = open_check_o_direct(file);
-	if (error)
-		fput(file);
 out2:
 	mnt_drop_write(path.mnt);
 out:
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 65c9c4175145..b993ad282de2 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -52,7 +52,6 @@
 #include <linux/nfs.h>
 #include <linux/nfs4.h>
 #include <linux/nfs_fs.h>
-#include <linux/fs_struct.h>
 
 #include "nfs4_fs.h"
 #include "internal.h"
diff --git a/fs/ntfs/mft.c b/fs/ntfs/mft.c
index 2831f495a674..32c523cf5a2d 100644
--- a/fs/ntfs/mft.c
+++ b/fs/ntfs/mft.c
@@ -381,7 +381,7 @@ unm_err_out:
  * vfs inode dirty.  This ensures that any changes to the mft record are
  * written out to disk.
  *
- * NOTE:  We only set I_DIRTY_SYNC and I_DIRTY_DATASYNC (and not I_DIRTY_PAGES)
+ * NOTE:  We only set I_DIRTY_DATASYNC (and not I_DIRTY_PAGES)
  * on the base vfs inode, because even though file data may have been modified,
  * it is dirty in the inode meta data rather than the data page cache of the
  * inode, and thus there are no data pages that need writing out.  Therefore, a
@@ -407,7 +407,7 @@ void __mark_mft_record_dirty(ntfs_inode *ni)
 	else
 		base_ni = ni->ext.base_ntfs_ino;
 	mutex_unlock(&ni->extent_lock);
-	__mark_inode_dirty(VFS_I(base_ni), I_DIRTY_SYNC | I_DIRTY_DATASYNC);
+	__mark_inode_dirty(VFS_I(base_ni), I_DIRTY_DATASYNC);
 }
 
 static const char *ntfs_please_email = "Please email "
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 9479f99c2145..b552d1f8508c 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -3537,7 +3537,7 @@ static int ocfs2_downconvert_lock(struct ocfs2_super *osb,
 	 * On DLM_LKF_VALBLK, fsdlm behaves differently with o2cb. It always
 	 * expects DLM_LKF_VALBLK being set if the LKB has LVB, so that
 	 * we can recover correctly from node failure. Otherwise, we may get
-	 * invalid LVB in LKB, but without DLM_SBF_VALNOTVALID being set.
+	 * invalid LVB in LKB, but without DLM_SBF_VALNOTVALID being set.
 	 */
 	if (!ocfs2_is_o2cb_active() &&
 	    lockres->l_ops->flags & LOCK_TYPE_USES_LVB)
diff --git a/fs/open.c b/fs/open.c
index d0e955b558ad..c5ee7cd60424 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -724,16 +724,6 @@ SYSCALL_DEFINE3(fchown, unsigned int, fd, uid_t, user, gid_t, group)
 	return ksys_fchown(fd, user, group);
 }
 
-int open_check_o_direct(struct file *f)
-{
-	/* NB: we're sure to have correct a_ops only after f_op->open */
-	if (f->f_flags & O_DIRECT) {
-		if (!f->f_mapping->a_ops || !f->f_mapping->a_ops->direct_IO)
-			return -EINVAL;
-	}
-	return 0;
-}
-
 static int do_dentry_open(struct file *f,
 			  struct inode *inode,
 			  int (*open)(struct inode *, struct file *),
@@ -755,7 +745,7 @@ static int do_dentry_open(struct file *f,
 	if (unlikely(f->f_flags & O_PATH)) {
 		f->f_mode = FMODE_PATH;
 		f->f_op = &empty_fops;
-		return 0;
+		goto done;
 	}
 
 	if (f->f_mode & FMODE_WRITE && !special_file(inode->i_mode)) {
@@ -808,7 +798,12 @@ static int do_dentry_open(struct file *f,
 	f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
 
 	file_ra_state_init(&f->f_ra, f->f_mapping->host->i_mapping);
-
+done:
+	/* NB: we're sure to have correct a_ops only after f_op->open */
+	error = -EINVAL;
+	if ((f->f_flags & O_DIRECT) &&
+	    (!f->f_mapping->a_ops || !f->f_mapping->a_ops->direct_IO))
+	    	goto out_fput;
 	return 0;
 
 cleanup_all:
@@ -823,6 +818,9 @@ cleanup_file:
 	f->f_path.dentry = NULL;
 	f->f_inode = NULL;
 	return error;
+out_fput:
+    	fput(f);
+	return error;
 }
 
 /**
@@ -920,20 +918,14 @@ struct file *dentry_open(const struct path *path, int flags,
 	BUG_ON(!path->mnt);
 
 	f = get_empty_filp();
-	if (!IS_ERR(f)) {
-		f->f_flags = flags;
-		error = vfs_open(path, f, cred);
-		if (!error) {
-			/* from now on we need fput() to dispose of f */
-			error = open_check_o_direct(f);
-			if (error) {
-				fput(f);
-				f = ERR_PTR(error);
-			}
-		} else { 
-			put_filp(f);
-			f = ERR_PTR(error);
-		}
+	if (IS_ERR(f))
+		return f;
+
+	f->f_flags = flags;
+	error = vfs_open(path, f, cred);
+	if (error) {
+		put_filp(f);
+		return ERR_PTR(error);
 	}
 	return f;
 }
diff --git a/fs/orangefs/acl.c b/fs/orangefs/acl.c
index 480ea059a680..10587413b20e 100644
--- a/fs/orangefs/acl.c
+++ b/fs/orangefs/acl.c
@@ -9,7 +9,6 @@
 #include "orangefs-kernel.h"
 #include "orangefs-bufmap.h"
 #include <linux/posix_acl_xattr.h>
-#include <linux/fs_struct.h>
 
 struct posix_acl *orangefs_get_acl(struct inode *inode, int type)
 {
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index cf348ba99238..1acb2ff505e6 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1256,7 +1256,7 @@ static int do_setattr(struct ubifs_info *c, struct inode *inode,
 		 * Inode length changed, so we have to make sure
 		 * @I_DIRTY_DATASYNC is set.
 		 */
-		 __mark_inode_dirty(inode, I_DIRTY_SYNC | I_DIRTY_DATASYNC);
+		 __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
 	else
 		mark_inode_dirty_sync(inode);
 	mutex_unlock(&ui->ui_mutex);
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 19eadc807056..31f1f10eecd1 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -1390,7 +1390,7 @@ xfs_vm_bmap(
 
 	/*
 	 * The swap code (ab-)uses ->bmap to get a block mapping and then
-	 * bypasseѕ the file system for actual I/O.  We really can't allow
+	 * bypasses the file system for actual I/O.  We really can't allow
 	 * that on reflinks inodes, so we have to skip out here.  And yes,
 	 * 0 is the magic code for a bmap error.
 	 *
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 070807ce3e41..0d798052bd85 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2015,7 +2015,8 @@ static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
 #define I_WB_SWITCH		(1 << 13)
 #define I_OVL_INUSE			(1 << 14)
 
-#define I_DIRTY (I_DIRTY_SYNC | I_DIRTY_DATASYNC | I_DIRTY_PAGES)
+#define I_DIRTY_INODE (I_DIRTY_SYNC | I_DIRTY_DATASYNC)
+#define I_DIRTY (I_DIRTY_INODE | I_DIRTY_PAGES)
 #define I_DIRTY_ALL (I_DIRTY | I_DIRTY_TIME)
 
 extern void __mark_inode_dirty(struct inode *, int);
@@ -2381,8 +2382,8 @@ struct audit_names;
 struct filename {
 	const char		*name;	/* pointer to actual string */
 	const __user char	*uptr;	/* original userland pointer */
-	struct audit_names	*aname;
 	int			refcnt;
+	struct audit_names	*aname;
 	const char		iname[];
 };
 
diff --git a/include/media/i2c/saa6588.h b/include/media/i2c/saa6588.h
index b5ec1aa60ed5..a0825f532f71 100644
--- a/include/media/i2c/saa6588.h
+++ b/include/media/i2c/saa6588.h
@@ -32,6 +32,7 @@ struct saa6588_command {
 	unsigned char __user *buffer;
 	struct file   *instance;
 	poll_table    *event_list;
+	__poll_t      poll_mask;
 };
 
 /* These ioctls are internal to the kernel */
diff --git a/kernel/exec_domain.c b/kernel/exec_domain.c
index 0975b0268545..a5697119290e 100644
--- a/kernel/exec_domain.c
+++ b/kernel/exec_domain.c
@@ -19,7 +19,6 @@
 #include <linux/syscalls.h>
 #include <linux/sysctl.h>
 #include <linux/types.h>
-#include <linux/fs_struct.h>
 
 #ifdef CONFIG_PROC_FS
 static int execdomains_proc_show(struct seq_file *m, void *v)
diff --git a/security/loadpin/loadpin.c b/security/loadpin/loadpin.c
index dbe6efde77a0..5fa191252c8f 100644
--- a/security/loadpin/loadpin.c
+++ b/security/loadpin/loadpin.c
@@ -19,7 +19,6 @@
 
 #include <linux/module.h>
 #include <linux/fs.h>
-#include <linux/fs_struct.h>
 #include <linux/lsm_hooks.h>
 #include <linux/mount.h>
 #include <linux/path.h>