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authorLinus Torvalds <torvalds@linux-foundation.org>2010-04-09 11:50:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-04-09 11:50:29 -0700
commit2f4084209adc77f9a1c9f38db3019a509e167882 (patch)
tree775657114c885505ecc46605e29ea1470e986f76 /drivers/block/drbd/drbd_bitmap.c
parent2f10ffcfb28beb35137d9e86992c771b4a6c5f2a (diff)
parent3440c49f5c5ecb4f29b0544aa87da71888404f8f (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (34 commits) cfq-iosched: Fix the incorrect timeslice accounting with forced_dispatch loop: Update mtime when writing using aops block: expose the statistics in blkio.time and blkio.sectors for the root cgroup backing-dev: Handle class_create() failure Block: Fix block/elevator.c elevator_get() off-by-one error drbd: lc_element_by_index() never returns NULL cciss: unlock on error path cfq-iosched: Do not merge queues of BE and IDLE classes cfq-iosched: Add additional blktrace log messages in CFQ for easier debugging i2o: Remove the dangerous kobj_to_i2o_device macro block: remove 16 bytes of padding from struct request on 64bits cfq-iosched: fix a kbuild regression block: make CONFIG_BLK_CGROUP visible Remove GENHD_FL_DRIVERFS block: Export max number of segments and max segment size in sysfs block: Finalize conversion of block limits functions block: Fix overrun in lcm() and move it to lib vfs: improve writeback_inodes_wb() paride: fix off-by-one test drbd: fix al-to-on-disk-bitmap for 4k logical_block_size ...
Diffstat (limited to 'drivers/block/drbd/drbd_bitmap.c')
-rw-r--r--drivers/block/drbd/drbd_bitmap.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index 3d6f3d98894..3390716898d 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -67,7 +67,7 @@ struct drbd_bitmap {
size_t bm_words;
size_t bm_number_of_pages;
sector_t bm_dev_capacity;
- struct semaphore bm_change; /* serializes resize operations */
+ struct mutex bm_change; /* serializes resize operations */
atomic_t bm_async_io;
wait_queue_head_t bm_io_wait;
@@ -115,7 +115,7 @@ void drbd_bm_lock(struct drbd_conf *mdev, char *why)
return;
}
- trylock_failed = down_trylock(&b->bm_change);
+ trylock_failed = !mutex_trylock(&b->bm_change);
if (trylock_failed) {
dev_warn(DEV, "%s going to '%s' but bitmap already locked for '%s' by %s\n",
@@ -126,7 +126,7 @@ void drbd_bm_lock(struct drbd_conf *mdev, char *why)
b->bm_task == mdev->receiver.task ? "receiver" :
b->bm_task == mdev->asender.task ? "asender" :
b->bm_task == mdev->worker.task ? "worker" : "?");
- down(&b->bm_change);
+ mutex_lock(&b->bm_change);
}
if (__test_and_set_bit(BM_LOCKED, &b->bm_flags))
dev_err(DEV, "FIXME bitmap already locked in bm_lock\n");
@@ -148,7 +148,7 @@ void drbd_bm_unlock(struct drbd_conf *mdev)
b->bm_why = NULL;
b->bm_task = NULL;
- up(&b->bm_change);
+ mutex_unlock(&b->bm_change);
}
/* word offset to long pointer */
@@ -296,7 +296,7 @@ int drbd_bm_init(struct drbd_conf *mdev)
if (!b)
return -ENOMEM;
spin_lock_init(&b->bm_lock);
- init_MUTEX(&b->bm_change);
+ mutex_init(&b->bm_change);
init_waitqueue_head(&b->bm_io_wait);
mdev->bitmap = b;