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| author | Mikulas Patocka <mpatocka@redhat.com> | 2022-07-13 07:05:51 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2022-07-14 15:52:31 -0400 |
| commit | 949d49ec306dfca51d63d89bc316211a2a008cfc (patch) | |
| tree | 26caed708591f0ef68411438e440f0661e8801c8 /drivers/md/dm-kcopyd.c | |
| parent | ca7dc242e358e46d963b32f9d9dd829785a9e957 (diff) | |
| download | lwn-949d49ec306dfca51d63d89bc316211a2a008cfc.tar.gz lwn-949d49ec306dfca51d63d89bc316211a2a008cfc.zip | |
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>
Diffstat (limited to 'drivers/md/dm-kcopyd.c')
| -rw-r--r-- | drivers/md/dm-kcopyd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c index 37b03ab7e5c9..6aa821a02d44 100644 --- a/drivers/md/dm-kcopyd.c +++ b/drivers/md/dm-kcopyd.c @@ -219,7 +219,7 @@ static struct page_list *alloc_pl(gfp_t gfp) if (!pl) return NULL; - pl->page = alloc_page(gfp); + pl->page = alloc_page(gfp | __GFP_HIGHMEM); if (!pl->page) { kfree(pl); return NULL; |