projects / linux-block.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 267fc83) | patch
scsi: target: avoid per-loop XCOPY buffer allocations
authorDavid Disseldorp <ddiss@suse.de>
Fri, 27 Mar 2020 14:19:52 +0000 (15:19 +0100)
committerMartin K. Petersen <martin.petersen@oracle.com>
Sun, 29 Mar 2020 22:10:59 +0000 (18:10 -0400)
commit0ad08996da05b6b735d4963dceab7d2a4043607c
treed8c812da2732e13429e491c779e0f82a9a97e847tree | snapshot
parent267fc83f8836ad6168ed264a0823543439abb3becommit | diff
scsi: target: avoid per-loop XCOPY buffer allocations

The main target_xcopy_do_work() loop unnecessarily allocates an I/O buffer
with each synchronous READ / WRITE pair. This commit significantly reduces
allocations by reusing the XCOPY I/O buffer when possible.

Link: https://lore.kernel.org/r/20200327141954.955-4-ddiss@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/target/target_core_xcopy.c diff | blob | blame | history
drivers/target/target_core_xcopy.h diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)