diff options
| author | Bodo Stroesser <bostroesser@gmail.com> | 2021-03-05 20:00:09 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-03-10 05:47:17 +0100 |
| commit | 1080782f13e3604351e690bd2fa84ebc3b4847f6 (patch) | |
| tree | 5b6ac2865bf6458ade12593b6c7d9b1601e25565 /drivers/target | |
| parent | scsi: target: tcmu: Replace radix_tree with XArray (diff) | |
| download | linux-1080782f13e3604351e690bd2fa84ebc3b4847f6.tar.xz linux-1080782f13e3604351e690bd2fa84ebc3b4847f6.zip | |
scsi: target: tcmu: Use GFP_NOIO while handling cmds or holding cmdr_lock
Especially when using tcmu with tcm_loop, memory allocations with
GFP_KERNEL for a LUN can cause write back to the same LUN.
So we have to use GFP_NOIO when allocation is done while handling commands
or while holding cmdr_lock.
Link: https://lore.kernel.org/r/20210305190009.32242-1-bostroesser@gmail.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_user.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index ada3ef982969..9e1b115cb032 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -518,7 +518,7 @@ static inline int tcmu_get_empty_block(struct tcmu_dev *udev, if (!page) goto err_alloc; - if (xa_store(&udev->data_blocks, dbi, page, GFP_KERNEL)) + if (xa_store(&udev->data_blocks, dbi, page, GFP_NOIO)) goto err_insert; } @@ -1272,7 +1272,7 @@ tcmu_tmr_notify(struct se_device *se_dev, enum tcm_tmreq_table tmf, pr_debug("TMR event %d on dev %s, aborted cmds %d, afflicted cmd_ids %d\n", tcmu_tmr_type(tmf), udev->name, i, cmd_cnt); - tmr = kmalloc(sizeof(*tmr) + cmd_cnt * sizeof(*cmd_ids), GFP_KERNEL); + tmr = kmalloc(sizeof(*tmr) + cmd_cnt * sizeof(*cmd_ids), GFP_NOIO); if (!tmr) goto unlock; |