提交 d62f843b 编写于 作者: J Jens Axboe

block: make blk_iopoll_prep_sched() follow normal 0/1 return convention

Return 0 if we successfully marked this iopoll structure as ours for
scheduling, instead of 1.
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
上级 1b379d8d
......@@ -18,10 +18,17 @@ enum {
IOPOLL_F_DISABLE = 1,
};
/*
* Returns 0 if we successfully set the IOPOLL_F_SCHED bit, indicating
* that we were the first to acquire this iop for scheduling. If this iop
* is currently disabled, return "failure".
*/
static inline int blk_iopoll_sched_prep(struct blk_iopoll *iop)
{
return !test_bit(IOPOLL_F_DISABLE, &iop->state) &&
!test_and_set_bit(IOPOLL_F_SCHED, &iop->state);
if (!test_bit(IOPOLL_F_DISABLE, &iop->state))
return test_and_set_bit(IOPOLL_F_SCHED, &iop->state);
return 1;
}
static inline int blk_iopoll_disable_pending(struct blk_iopoll *iop)
......
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