[PATCH] add -o flush for fat

Fat is commonly used on removable media.  Mounting with -o flush tells the
FS to write things to disk as quickly as possible.  It is like -o sync, but
much faster (and not as safe).

Signed-off-by: Chris Mason <mason@suse.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/msdos_fs.h b/include/linux/msdos_fs.h
index bae62d62dc3e..ce6c85815cbd 100644
--- a/include/linux/msdos_fs.h
+++ b/include/linux/msdos_fs.h
@@ -204,6 +204,7 @@ struct fat_mount_options {
                  unicode_xlate:1, /* create escape sequences for unhandled Unicode */
                  numtail:1,       /* Does first alias have a numeric '~1' type tail? */
                  atari:1,         /* Use Atari GEMDOS variation of MS-DOS fs */
+                 flush:1,         /* write things quickly */
                  nocase:1;        /* Does this need case conversion? 0=need case conversion*/
 };
 
@@ -412,6 +413,8 @@ extern int fat_sync_inode(struct inode *inode);
 extern int fat_fill_super(struct super_block *sb, void *data, int silent,
                         struct inode_operations *fs_dir_inode_ops, int isvfat);
 
+extern int fat_flush_inodes(struct super_block *sb, struct inode *i1,
+                            struct inode *i2);
 /* fat/misc.c */
 extern void fat_fs_panic(struct super_block *s, const char *fmt, ...);
 extern void fat_clusters_flush(struct super_block *sb);