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| author | Pekka Enberg <penberg@cs.helsinki.fi> | 2006-12-06 20:35:28 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 08:39:31 -0800 |
| commit | 50ee0a32b192902e32a2b596df7ec3496c4bf485 (patch) | |
| tree | f7f1a18ba215bfd4b313a70a8d1c9a9e4a75a044 /fs/ext3/super.c | |
| parent | e4fca01ea2b41c41a82f4ca3537f6ebc237adde5 (diff) | |
| download | op-kernel-dev-50ee0a32b192902e32a2b596df7ec3496c4bf485.zip op-kernel-dev-50ee0a32b192902e32a2b596df7ec3496c4bf485.tar.gz | |
[PATCH] ext3: fsid for statvfs
Update ext3_statfs to return an FSID that is a 64 bit XOR of the 128 bit
filesystem UUID as suggested by Andreas Dilger. See the following Bugzilla
entry for details:
http://bugzilla.kernel.org/show_bug.cgi?id=136
Cc: Andreas Dilger <adilger@clusterfs.com>
Cc: Stephen Tweedie <sct@redhat.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ext3/super.c')
| -rw-r--r-- | fs/ext3/super.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 9856565..8ab1981 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -2387,6 +2387,7 @@ static int ext3_statfs (struct dentry * dentry, struct kstatfs * buf) struct ext3_super_block *es = sbi->s_es; ext3_fsblk_t overhead; int i; + u64 fsid; if (test_opt (sb, MINIX_DF)) overhead = 0; @@ -2433,6 +2434,10 @@ static int ext3_statfs (struct dentry * dentry, struct kstatfs * buf) buf->f_files = le32_to_cpu(es->s_inodes_count); buf->f_ffree = percpu_counter_sum(&sbi->s_freeinodes_counter); buf->f_namelen = EXT3_NAME_LEN; + fsid = le64_to_cpup((void *)es->s_uuid) ^ + le64_to_cpup((void *)es->s_uuid + sizeof(u64)); + buf->f_fsid.val[0] = fsid & 0xFFFFFFFFUL; + buf->f_fsid.val[1] = (fsid >> 32) & 0xFFFFFFFFUL; return 0; } |
