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authorDavid Howells <dhowells@redhat.com>2006-06-23 13:02:58 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 18:42:45 +0400
commit726c334223180e3c0197cc980a432681370d4baf (patch)
tree8327b354bb3dc959a6606051ae6f8d4d035e38a2 /fs/coda
parent454e2398be9b9fa30433fccc548db34d19aa9958 (diff)
downloadlinux-726c334223180e3c0197cc980a432681370d4baf.tar.xz
[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/coda')
-rw-r--r--fs/coda/inode.c6
-rw-r--r--fs/coda/upcall.c4
2 files changed, 5 insertions, 5 deletions
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index cba70201567d..87f1dc8aa24b 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -36,7 +36,7 @@
/* VFS super_block ops */
static void coda_clear_inode(struct inode *);
static void coda_put_super(struct super_block *);
-static int coda_statfs(struct super_block *sb, struct kstatfs *buf);
+static int coda_statfs(struct dentry *dentry, struct kstatfs *buf);
static kmem_cache_t * coda_inode_cachep;
@@ -278,13 +278,13 @@ struct inode_operations coda_file_inode_operations = {
.setattr = coda_setattr,
};
-static int coda_statfs(struct super_block *sb, struct kstatfs *buf)
+static int coda_statfs(struct dentry *dentry, struct kstatfs *buf)
{
int error;
lock_kernel();
- error = venus_statfs(sb, buf);
+ error = venus_statfs(dentry, buf);
unlock_kernel();
diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c
index 1bae99650a91..b040eba13a7d 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;