diff options
Diffstat (limited to 'block/blk-iocost.c')
| -rw-r--r-- | block/blk-iocost.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index ff534e9d92dc..4442c7a85112 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -800,7 +800,11 @@ static void ioc_refresh_period_us(struct ioc *ioc) ioc_refresh_margins(ioc); } -static int ioc_autop_idx(struct ioc *ioc) +/* + * ioc->rqos.disk isn't initialized when this function is called from + * the init path. + */ +static int ioc_autop_idx(struct ioc *ioc, struct gendisk *disk) { int idx = ioc->autop_idx; const struct ioc_params *p = &autop[idx]; @@ -808,11 +812,11 @@ static int ioc_autop_idx(struct ioc *ioc) u64 now_ns; /* rotational? */ - if (!blk_queue_nonrot(ioc->rqos.disk->queue)) + if (!blk_queue_nonrot(disk->queue)) return AUTOP_HDD; /* handle SATA SSDs w/ broken NCQ */ - if (blk_queue_depth(ioc->rqos.disk->queue) == 1) + if (blk_queue_depth(disk->queue) == 1) return AUTOP_SSD_QD1; /* use one of the normal ssd sets */ @@ -901,14 +905,19 @@ static void ioc_refresh_lcoefs(struct ioc *ioc) &c[LCOEF_WPAGE], &c[LCOEF_WSEQIO], &c[LCOEF_WRANDIO]); } -static bool ioc_refresh_params(struct ioc *ioc, bool force) +/* + * struct gendisk is required as an argument because ioc->rqos.disk + * is not properly initialized when called from the init path. + */ +static bool ioc_refresh_params_disk(struct ioc *ioc, bool force, + struct gendisk *disk) { const struct ioc_params *p; int idx; lockdep_assert_held(&ioc->lock); - idx = ioc_autop_idx(ioc); + idx = ioc_autop_idx(ioc, disk); p = &autop[idx]; if (idx == ioc->autop_idx && !force) @@ -939,6 +948,11 @@ static bool ioc_refresh_params(struct ioc *ioc, bool force) return true; } +static bool ioc_refresh_params(struct ioc *ioc, bool force) +{ + return ioc_refresh_params_disk(ioc, force, ioc->rqos.disk); +} + /* * When an iocg accumulates too much vtime or gets deactivated, we throw away * some vtime, which lowers the overall device utilization. As the exact amount @@ -2880,7 +2894,7 @@ static int blk_iocost_init(struct gendisk *disk) spin_lock_irq(&ioc->lock); ioc->autop_idx = AUTOP_INVALID; - ioc_refresh_params(ioc, true); + ioc_refresh_params_disk(ioc, true, disk); spin_unlock_irq(&ioc->lock); /* |