From: Joe Thornber Date: Thu, 19 Nov 2015 12:55:58 +0000 (+0000) Subject: dm block manager: add unlikely() annotations on dm_bufio error paths X-Git-Tag: v4.11-rc1~139^2~14 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=602548bdd5ac4ed7025d992e3ad61a628af4c500;p=karo-tx-linux.git dm block manager: add unlikely() annotations on dm_bufio error paths Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer --- diff --git a/drivers/md/persistent-data/dm-block-manager.c b/drivers/md/persistent-data/dm-block-manager.c index a6dde7cab458..8212f14214f1 100644 --- a/drivers/md/persistent-data/dm-block-manager.c +++ b/drivers/md/persistent-data/dm-block-manager.c @@ -462,7 +462,7 @@ int dm_bm_read_lock(struct dm_block_manager *bm, dm_block_t b, int r; p = dm_bufio_read(bm->bufio, b, (struct dm_buffer **) result); - if (IS_ERR(p)) + if (unlikely(IS_ERR(p))) return PTR_ERR(p); aux = dm_bufio_get_aux_data(to_buffer(*result)); @@ -498,7 +498,7 @@ int dm_bm_write_lock(struct dm_block_manager *bm, return -EPERM; p = dm_bufio_read(bm->bufio, b, (struct dm_buffer **) result); - if (IS_ERR(p)) + if (unlikely(IS_ERR(p))) return PTR_ERR(p); aux = dm_bufio_get_aux_data(to_buffer(*result)); @@ -531,7 +531,7 @@ int dm_bm_read_try_lock(struct dm_block_manager *bm, int r; p = dm_bufio_get(bm->bufio, b, (struct dm_buffer **) result); - if (IS_ERR(p)) + if (unlikely(IS_ERR(p))) return PTR_ERR(p); if (unlikely(!p)) return -EWOULDBLOCK; @@ -567,7 +567,7 @@ int dm_bm_write_lock_zero(struct dm_block_manager *bm, return -EPERM; p = dm_bufio_new(bm->bufio, b, (struct dm_buffer **) result); - if (IS_ERR(p)) + if (unlikely(IS_ERR(p))) return PTR_ERR(p); memset(p, 0, dm_bm_block_size(bm));