diff options
Diffstat (limited to 'fs/aio.c')
-rw-r--r-- | fs/aio.c | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -1140,6 +1140,13 @@ static long aio_read_events_ring(struct kioctx *ctx, | |||
1140 | long ret = 0; | 1140 | long ret = 0; |
1141 | int copy_ret; | 1141 | int copy_ret; |
1142 | 1142 | ||
1143 | /* | ||
1144 | * The mutex can block and wake us up and that will cause | ||
1145 | * wait_event_interruptible_hrtimeout() to schedule without sleeping | ||
1146 | * and repeat. This should be rare enough that it doesn't cause | ||
1147 | * peformance issues. See the comment in read_events() for more detail. | ||
1148 | */ | ||
1149 | sched_annotate_sleep(); | ||
1143 | mutex_lock(&ctx->ring_lock); | 1150 | mutex_lock(&ctx->ring_lock); |
1144 | 1151 | ||
1145 | /* Access to ->ring_pages here is protected by ctx->ring_lock. */ | 1152 | /* Access to ->ring_pages here is protected by ctx->ring_lock. */ |