diff options
| author | yangerkun <yangerkun@huawei.com> | 2020-07-02 09:25:26 +0200 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2020-07-08 06:51:16 +0200 |
| commit | 2e98c01846b2ce96cc41f60b70fd03cd47d3ac77 (patch) | |
| tree | e2139fe36e0c6886f668e31aa4e008be1547eee3 | |
| parent | smb3: fix access denied on change notify request to some servers (diff) | |
| download | linux-2e98c01846b2ce96cc41f60b70fd03cd47d3ac77.tar.xz linux-2e98c01846b2ce96cc41f60b70fd03cd47d3ac77.zip | |
cifs: remove the retry in cifs_poxis_lock_set
The caller of cifs_posix_lock_set will do retry(like
fcntl_setlk64->do_lock_file_wait) if we will wait for any file_lock.
So the retry in cifs_poxis_lock_set seems duplicated, remove it to
make a cleanup.
Signed-off-by: yangerkun <yangerkun@huawei.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: NeilBrown <neilb@suse.de>
| -rw-r--r-- | fs/cifs/file.c | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 9b0f8f33f832..be46fab4c96d 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1149,20 +1149,20 @@ cifs_posix_lock_test(struct file *file, struct file_lock *flock) /* * Set the byte-range lock (posix style). Returns: - * 1) 0, if we set the lock and don't need to request to the server; - * 2) 1, if we need to request to the server; - * 3) <0, if the error occurs while setting the lock. + * 1) <0, if the error occurs while setting the lock; + * 2) 0, if we set the lock and don't need to request to the server; + * 3) FILE_LOCK_DEFERRED, if we will wait for some other file_lock; + * 4) FILE_LOCK_DEFERRED + 1, if we need to request to the server. */ static int cifs_posix_lock_set(struct file *file, struct file_lock *flock) { struct cifsInodeInfo *cinode = CIFS_I(file_inode(file)); - int rc = 1; + int rc = FILE_LOCK_DEFERRED + 1; if ((flock->fl_flags & FL_POSIX) == 0) return rc; -try_again: cifs_down_write(&cinode->lock_sem); if (!cinode->can_cache_brlcks) { up_write(&cinode->lock_sem); @@ -1171,13 +1171,6 @@ try_again: rc = posix_lock_file(file, flock, NULL); up_write(&cinode->lock_sem); - if (rc == FILE_LOCK_DEFERRED) { - rc = wait_event_interruptible(flock->fl_wait, - list_empty(&flock->fl_blocked_member)); - if (!rc) - goto try_again; - locks_delete_block(flock); - } return rc; } @@ -1652,7 +1645,7 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u32 type, int posix_lock_type; rc = cifs_posix_lock_set(file, flock); - if (!rc || rc < 0) + if (rc <= FILE_LOCK_DEFERRED) return rc; if (type & server->vals->shared_lock_type) |