From 726c334223180e3c0197cc980a432681370d4baf Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 23 Jun 2006 02:02:58 -0700 Subject: [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 Acked-by: Al Viro Cc: Nathan Scott Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/coda/upcall.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/coda/upcall.c') diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c index 1bae99650a9..b040eba13a7 100644 --- a/fs/coda/upcall.c +++ b/fs/coda/upcall.c @@ -611,7 +611,7 @@ int venus_pioctl(struct super_block *sb, struct CodaFid *fid, return error; } -int venus_statfs(struct super_block *sb, struct kstatfs *sfs) +int venus_statfs(struct dentry *dentry, struct kstatfs *sfs) { union inputArgs *inp; union outputArgs *outp; @@ -620,7 +620,7 @@ int venus_statfs(struct super_block *sb, struct kstatfs *sfs) insize = max_t(unsigned int, INSIZE(statfs), OUTSIZE(statfs)); UPARG(CODA_STATFS); - error = coda_upcall(coda_sbp(sb), insize, &outsize, inp); + error = coda_upcall(coda_sbp(dentry->d_sb), insize, &outsize, inp); if (!error) { sfs->f_blocks = outp->coda_statfs.stat.f_blocks; -- cgit v1.2.3-18-g5258