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| author | David Howells <dhowells@redhat.com> | 2006-06-23 11:02:58 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-23 16:42:45 +0200 |
| commit | 726c334223180e3c0197cc980a432681370d4baf (patch) | |
| tree | 8327b354bb3dc959a6606051ae6f8d4d035e38a2 /fs/ext2/super.c | |
| parent | [PATCH] VFS: Permit filesystem to override root dentry on mount (diff) | |
| download | linux-726c334223180e3c0197cc980a432681370d4baf.tar.xz linux-726c334223180e3c0197cc980a432681370d4baf.zip | |
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
Give the statfs superblock operation a dentry pointer rather than a superblock
pointer.
This complements the get_sb() patch. That reduced the significance of
sb->s_root, allowing NFS to place a fake root there. However, NFS does
require a dentry to use as a target for the statfs operation. This permits
the root in the vfsmount to be used instead.
linux/mount.h has been added where necessary to make allyesconfig build
successfully.
Interest has also been expressed for use with the FUSE and XFS filesystems.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Nathan Scott <nathans@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ext2/super.c')
| -rw-r--r-- | fs/ext2/super.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c index a4dfffac5967..a6c4d6e02324 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -39,7 +39,7 @@ static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es); static int ext2_remount (struct super_block * sb, int * flags, char * data); -static int ext2_statfs (struct super_block * sb, struct kstatfs * buf); +static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf); void ext2_error (struct super_block * sb, const char * function, const char * fmt, ...) @@ -1038,8 +1038,9 @@ restore_opts: return err; } -static int ext2_statfs (struct super_block * sb, struct kstatfs * buf) +static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf) { + struct super_block *sb = dentry->d_sb; struct ext2_sb_info *sbi = EXT2_SB(sb); unsigned long overhead; int i; |