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(parent: ca7dc24) | patch
dm kcopyd: use __GFP_HIGHMEM when allocating pages
authorMikulas Patocka <mpatocka@redhat.com>
Wed, 13 Jul 2022 11:05:51 +0000 (07:05 -0400)
committerMike Snitzer <snitzer@kernel.org>
Thu, 14 Jul 2022 19:52:31 +0000 (15:52 -0400)
commit949d49ec306dfca51d63d89bc316211a2a008cfc
tree26caed708591f0ef68411438e440f0661e8801c8tree | snapshot
parentca7dc242e358e46d963b32f9d9dd829785a9e957commit | diff
dm kcopyd: use __GFP_HIGHMEM when allocating pages

dm-kcopyd doesn't access the allocated pages directly, it only passes
them to dm-io which adds them to a bio list - thus, we can allocate
the pages from high memory. This will reduce pressure on the low
memory when there are a large number of kcopyd jobs in progress.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
drivers/md/dm-kcopyd.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)