diff options
| author | Vivek Trivedi <vtrivedi018@gmail.com> | 2012-03-15 23:58:52 +0530 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-03-21 11:45:28 -0400 |
| commit | 5a7c9eec9fde1da0e3adf0a4ddb64ff2a324a492 (patch) | |
| tree | f6ca94e7356996f9e29d6baa0fea67d3a499f9f0 /fs/nfs/super.c | |
| parent | 9b78145c0f280d4f01c460d6251eab2584181fa9 (diff) | |
| download | lwn-5a7c9eec9fde1da0e3adf0a4ddb64ff2a324a492.tar.gz lwn-5a7c9eec9fde1da0e3adf0a4ddb64ff2a324a492.zip | |
NFS: fix sb->s_id in nfs debug prints
NFS bdi flush thread in ps output is printed like "flush-<major number
in decimal>:<minor number in decimal>"
For example:
$ ps aux | grep flush
2079 root 0 SW [flush-0:18]
^^^^
nfs_bdi_register()
==> bdi_register_dev()
==> bdi_register(bdi, NULL, "%u:%u", MAJOR(dev), MINOR(dev));
^^^^^
However, NFS sb->s_id store major:minor number in hex:
nfs_initialise_sb()
==> snprintf(sb->s_id, sizeof(sb->s_id),
"%x:%x", MAJOR(sb->s_dev), MINOR(sb->s_dev));
^^^^^
If we enable nfs debug prints using command:
$ rpcdebug -m nfs -s all
write to a file:
$ dd if=/dev/zero of=<NFS Mount>/testfile.txt bs=32768 count=1
Without Patch:
[ 2431.032000] NFS: 0 initiated write call (req 0:12/40, 32768 bytes
@ offset 0) ^^^^
With Patch:
[ 2431.032000] NFS: 0 initiated write call (req 0:18/40, 32768 bytes
@ offset 0) ^^^^
We should store NFS "s->s_id" in decimal to avoid confusion between NFS
flush thread name(in ps output) and NFS debug prints.
Signed-off-by: Vivek Trivedi <vtrivedi018@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/super.c')
| -rw-r--r-- | fs/nfs/super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index aac403085be5..ccc4cdb1efe9 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2115,7 +2115,7 @@ static inline void nfs_initialise_sb(struct super_block *sb) /* We probably want something more informative here */ snprintf(sb->s_id, sizeof(sb->s_id), - "%x:%x", MAJOR(sb->s_dev), MINOR(sb->s_dev)); + "%u:%u", MAJOR(sb->s_dev), MINOR(sb->s_dev)); if (sb->s_blocksize == 0) sb->s_blocksize = nfs_block_bits(server->wsize, |