diff options
| -rw-r--r-- | Documentation/filesystems/Locking | 14 | ||||
| -rw-r--r-- | fs/locks.c | 5 | ||||
| -rw-r--r-- | include/linux/fs.h | 2 |
3 files changed, 0 insertions, 21 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index dac435575384..204dd3ea36bb 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -361,8 +361,6 @@ so fl_release_private called on a lease should not block. ----------------------- lock_manager_operations --------------------------- prototypes: - int (*lm_compare_owner)(struct file_lock *, struct file_lock *); - unsigned long (*lm_owner_key)(struct file_lock *); void (*lm_notify)(struct file_lock *); /* unblock callback */ int (*lm_grant)(struct file_lock *, struct file_lock *, int); void (*lm_break)(struct file_lock *); /* break_lease callback */ @@ -371,23 +369,11 @@ prototypes: locking rules: inode->i_lock blocked_lock_lock may block -lm_compare_owner: yes[1] maybe no -lm_owner_key yes[1] yes no lm_notify: yes yes no lm_grant: no no no lm_break: yes no no lm_change yes no no -[1]: ->lm_compare_owner and ->lm_owner_key are generally called with -*an* inode->i_lock held. It may not be the i_lock of the inode -associated with either file_lock argument! This is the case with deadlock -detection, since the code has to chase down the owners of locks that may -be entirely unrelated to the one on which the lock is being acquired. -For deadlock detection however, the blocked_lock_lock is also held. The -fact that these locks are held ensures that the file_locks do not -disappear out from under you while doing the comparison or generating an -owner key. - --------------------------- buffer_head ----------------------------------- prototypes: void (*b_end_io)(struct buffer_head *bh, int uptodate); diff --git a/fs/locks.c b/fs/locks.c index ec1e4a5df629..0f85e840b2c7 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -658,9 +658,6 @@ static inline int locks_overlap(struct file_lock *fl1, struct file_lock *fl2) */ static int posix_same_owner(struct file_lock *fl1, struct file_lock *fl2) { - if (fl1->fl_lmops && fl1->fl_lmops->lm_compare_owner) - return fl2->fl_lmops == fl1->fl_lmops && - fl1->fl_lmops->lm_compare_owner(fl1, fl2); return fl1->fl_owner == fl2->fl_owner; } @@ -701,8 +698,6 @@ static void locks_delete_global_locks(struct file_lock *fl) static unsigned long posix_owner_key(struct file_lock *fl) { - if (fl->fl_lmops && fl->fl_lmops->lm_owner_key) - return fl->fl_lmops->lm_owner_key(fl); return (unsigned long)fl->fl_owner; } diff --git a/include/linux/fs.h b/include/linux/fs.h index f7fdfe93e25d..0fa010bb7b6a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1019,8 +1019,6 @@ struct file_lock_operations { }; struct lock_manager_operations { - int (*lm_compare_owner)(struct file_lock *, struct file_lock *); - unsigned long (*lm_owner_key)(struct file_lock *); fl_owner_t (*lm_get_owner)(fl_owner_t); void (*lm_put_owner)(fl_owner_t); void (*lm_notify)(struct file_lock *); /* unblock callback */ |