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| author | Sage Weil <sage@newdream.net> | 2011-12-13 09:19:26 -0800 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2011-12-13 09:19:26 -0800 |
| commit | 6a82c47aa84ab22cb5969a44105cca5358879d21 (patch) | |
| tree | 60dea7b341119350274ba9c50cacddc2b357fd52 | |
| parent | f1932fc1a6d899c754676b1dd8b17de93b052d43 (diff) | |
| download | linux-3.10-6a82c47aa84ab22cb5969a44105cca5358879d21.tar.gz linux-3.10-6a82c47aa84ab22cb5969a44105cca5358879d21.tar.bz2 linux-3.10-6a82c47aa84ab22cb5969a44105cca5358879d21.zip | |
ceph: fix SEEK_CUR, SEEK_SET regression
Commit 06222e491e663dac939f04b125c9dc52126a75c4 got the if wrong so that
it always evaluates as true. This is semantically harmless, but makes
SEEK_CUR and SEEK_SET needlessly query the server.
Rewrite the if to explicitly enumerate the cases we DO need a valid i_size
to make this code less fragile.
Reported-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>
| -rw-r--r-- | fs/ceph/file.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ceph/file.c b/fs/ceph/file.c index af187330cc8..ed72428d9c7 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -797,7 +797,8 @@ static loff_t ceph_llseek(struct file *file, loff_t offset, int origin) mutex_lock(&inode->i_mutex); __ceph_do_pending_vmtruncate(inode); - if (origin != SEEK_CUR || origin != SEEK_SET) { + + if (origin == SEEK_END || origin == SEEK_DATA || origin == SEEK_HOLE) { ret = ceph_do_getattr(inode, CEPH_STAT_CAP_SIZE); if (ret < 0) { offset = ret; |