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authorLinus Torvalds <torvalds@linux-foundation.org>2022-08-06 21:09:55 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-08-06 21:09:55 +0300
commit20cf903a0c407cef19300e5c85a03c82593bde36 (patch)
treeaf2cf06362b328fcfbdc2c2ce10c173930b71fd7 /drivers/iommu
parentc993e07be023acdeec8e84e2e0743c52adb5fc94 (diff)
parent12907efde6ad984f2d76cc1a7dbaae132384d8a5 (diff)
downloadlinux-20cf903a0c407cef19300e5c85a03c82593bde36.tar.xz
Merge tag 'for-6.0/dm-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull more device mapper updates from Mike Snitzer: - Add flags argument to dm_bufio_client_create and introduce DM_BUFIO_CLIENT_NO_SLEEP flag to have dm-bufio use spinlock rather than mutex for its locking. - Add optional "try_verify_in_tasklet" feature to DM verity target. This feature gives users the option to improve IO latency by using a tasklet to verify, using hashes in bufio's cache, rather than wait to schedule a work item via workqueue. But if there is a bufio cache miss, or an error, then the tasklet will fallback to using workqueue. - Incremental changes to both dm-bufio and the DM verity target to use jump_label to minimize cost of branching associated with the niche "try_verify_in_tasklet" feature. DM-bufio in particular is used by quite a few other DM targets so it doesn't make sense to incur additional bufio cost in those targets purely for the benefit of this niche verity feature if the feature isn't ever used. - Optimize verity_verify_io, which is used by both workqueue and tasklet based verification, if FEC is not configured or tasklet based verification isn't used. - Remove DM verity target's verify_wq's use of the WQ_CPU_INTENSIVE flag since it uses WQ_UNBOUND. Also, use the WQ_HIGHPRI flag if "try_verify_in_tasklet" is specified. * tag 'for-6.0/dm-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm verity: have verify_wq use WQ_HIGHPRI if "try_verify_in_tasklet" dm verity: remove WQ_CPU_INTENSIVE flag since using WQ_UNBOUND dm verity: only copy bvec_iter in verity_verify_io if in_tasklet dm verity: optimize verity_verify_io if FEC not configured dm verity: conditionally enable branching for "try_verify_in_tasklet" dm bufio: conditionally enable branching for DM_BUFIO_CLIENT_NO_SLEEP dm verity: allow optional args to alter primary args handling dm verity: Add optional "try_verify_in_tasklet" feature dm bufio: Add DM_BUFIO_CLIENT_NO_SLEEP flag dm bufio: Add flags argument to dm_bufio_client_create
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