diff options
| author | Mel Gorman <mgorman@techsingularity.net> | 2015-11-06 16:28:28 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 17:50:42 -0800 |
| commit | 71baba4b92dc1fa1bc461742c6ab1942ec6034e9 (patch) | |
| tree | 48c361ba0cc06890703bee1464a9349519118330 /block/blk-core.c | |
| parent | 40113370836e8e79befa585277296ed42781ef31 (diff) | |
| download | linux-71baba4b92dc1fa1bc461742c6ab1942ec6034e9.tar.bz2 | |
mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM
__GFP_WAIT was used to signal that the caller was in atomic context and
could not sleep. Now it is possible to distinguish between true atomic
context and callers that are not willing to sleep. The latter should
clear __GFP_DIRECT_RECLAIM so kswapd will still wake. As clearing
__GFP_WAIT behaves differently, there is a risk that people will clear the
wrong flags. This patch renames __GFP_WAIT to __GFP_RECLAIM to clearly
indicate what it does -- setting it allows all reclaim activity, clearing
them prevents it.
[akpm@linux-foundation.org: fix build]
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Christoph Lameter <cl@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Vitaly Wool <vitalywool@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 9e32f0868e36..590cca21c24a 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -638,7 +638,7 @@ int blk_queue_enter(struct request_queue *q, gfp_t gfp) if (percpu_ref_tryget_live(&q->q_usage_counter)) return 0; - if (!(gfp & __GFP_WAIT)) + if (!gfpflags_allow_blocking(gfp)) return -EBUSY; ret = wait_event_interruptible(q->mq_freeze_wq, @@ -2038,7 +2038,7 @@ void generic_make_request(struct bio *bio) do { struct request_queue *q = bdev_get_queue(bio->bi_bdev); - if (likely(blk_queue_enter(q, __GFP_WAIT) == 0)) { + if (likely(blk_queue_enter(q, __GFP_DIRECT_RECLAIM) == 0)) { q->make_request_fn(q, bio); |