diff options
| author | Kinglong Mee <kinglongmee@gmail.com> | 2014-08-22 10:18:43 -0400 |
|---|---|---|
| committer | Jeff Layton <jlayton@primarydata.com> | 2014-09-09 16:01:09 -0400 |
| commit | f328296e27414394f25cebaef4a111a82ce0df32 (patch) | |
| tree | 2263381bcef86e21e5d20dbfdd72c1f248382daa /fs/lockd/svclock.c | |
| parent | 5c97d7b1479982a48cf2129062b880c2555049ac (diff) | |
| download | lwn-f328296e27414394f25cebaef4a111a82ce0df32.tar.gz lwn-f328296e27414394f25cebaef4a111a82ce0df32.zip | |
locks: Copy fl_lmops information for conflock in locks_copy_conflock()
Commit d5b9026a67 ([PATCH] knfsd: locks: flag NFSv4-owned locks) using
fl_lmops field in file_lock for checking nfsd4 lockowner.
But, commit 1a747ee0cc (locks: don't call ->copy_lock methods on return
of conflicting locks) causes the fl_lmops of conflock always be NULL.
Also, commit 0996905f93 (lockd: posix_test_lock() should not call
locks_copy_lock()) caused the fl_lmops of conflock always be NULL too.
Make sure copy the private information by fl_copy_lock() in struct
file_lock_operations, merge __locks_copy_lock() to fl_copy_lock().
Jeff advice, "Set fl_lmops on conflocks, but don't set fl_ops.
fl_ops are superfluous, since they are callbacks into the filesystem.
There should be no need to bother the filesystem at all with info
in a conflock. But, lock _ownership_ matters for conflocks and that's
indicated by the fl_lmops. So you really do want to copy the fl_lmops
for conflocks I think."
v5: add missing calling of locks_release_private() in nlmsvc_testlock()
v4: only copy fl_lmops for conflock, don't copy fl_ops
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Diffstat (limited to 'fs/lockd/svclock.c')
| -rw-r--r-- | fs/lockd/svclock.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c index 2a6170133c1d..acfa94d5b489 100644 --- a/fs/lockd/svclock.c +++ b/fs/lockd/svclock.c @@ -586,6 +586,7 @@ conf_lock: conflock->fl.fl_type = lock->fl.fl_type; conflock->fl.fl_start = lock->fl.fl_start; conflock->fl.fl_end = lock->fl.fl_end; + locks_release_private(&lock->fl); ret = nlm_lck_denied; out: if (block) |