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FROMGIT: scsi: ufshpb: Do not report victim error in HCM

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In host control mode, eviction is precieved as an extreme measure.
There are several conditions that both the entering and exiting regions
should meet, so that eviction will take place.

The common case however, is that those conditions are rarely met, so it
is normal that the act of eviction fails.  Therefore, Do not report an
error in host control mode if eviction fails.

Link: https://lore.kernel.org/r/20210808090024.21721-5-avri.altman@wdc.com
Fixes: 6c59cb501b86 (scsi: ufs: ufshpb: Make eviction depend on region's reads)
(cherry picked from commit 10163cee1f06fc2e17bcf7bbc2982337202d1d5c
git: //git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Avri Altman <avri.altman@wdc.com>
Change-Id: Id6aa444ea5e2efd15c507bbd586c421018c75998
This commit is contained in:
Avri Altman 2021-07-20 13:15:58 +03:00 committed by Alistair Delva
parent e2766208d7
commit 335046583c
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/ufs/ufshpb.c
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@ -1391,7 +1391,8 @@ static int ufshpb_add_region(struct ufshpb_lu *hpb, struct ufshpb_region *rgn)
victim_rgn = ufshpb_victim_lru_info(hpb);
if (!victim_rgn) {
dev_warn(&hpb->sdev_ufs_lu->sdev_dev,
"cannot get victim region error\n");
"cannot get victim region %s\n",
hpb->is_hcm ? "" : "error");
ret = -ENOMEM;
goto out;
}