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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2011-02-21 13:20:55 +0100 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-10-14 16:47:42 +0200 |
| commit | 4738fa16907a933d72bbcae1b8922dc9330fde92 (patch) | |
| tree | d0a48980a5269758ba01545b4200c548b30b0909 /drivers/block/drbd/drbd_bitmap.c | |
| parent | drbd: in drbd_suspend_al, set AL_SUSPENDED before unlocking the activity log (diff) | |
| download | linux-4738fa16907a933d72bbcae1b8922dc9330fde92.tar.xz linux-4738fa16907a933d72bbcae1b8922dc9330fde92.zip | |
drbd: use clear_bit_unlock() where appropriate
Some open-coded clear_bit(); smp_mb__after_clear_bit();
should in fact have been smp_mb__before_clear_bit(); clear_bit();
Instead, use clear_bit_unlock() to annotate the intention,
and have it do the right thing.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_bitmap.c')
| -rw-r--r-- | drivers/block/drbd/drbd_bitmap.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c index e8d652f197c3..4be737055718 100644 --- a/drivers/block/drbd/drbd_bitmap.c +++ b/drivers/block/drbd/drbd_bitmap.c @@ -219,8 +219,7 @@ static void bm_page_unlock_io(struct drbd_conf *mdev, int page_nr) { struct drbd_bitmap *b = mdev->bitmap; void *addr = &page_private(b->bm_pages[page_nr]); - clear_bit(BM_PAGE_IO_LOCK, addr); - smp_mb__after_clear_bit(); + clear_bit_unlock(BM_PAGE_IO_LOCK, addr); wake_up(&mdev->bitmap->bm_io_wait); } |