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| author | Jacobo Giralt <jacobo.giralt@gmail.com> | 2012-01-10 15:07:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-10 16:30:41 -0800 |
| commit | 937a94c9db30a818baa5e2c09dbf4589251355c3 (patch) | |
| tree | c038d9689edf1f03467227959f66c3ef750a9572 /mm/page_alloc.c | |
| parent | 90a5d5af74f6570af063fb6bff33c6b2f8361bbc (diff) | |
| download | lwn-937a94c9db30a818baa5e2c09dbf4589251355c3.tar.gz lwn-937a94c9db30a818baa5e2c09dbf4589251355c3.zip | |
mm: migrate: one less atomic operation
migrate_page_move_mapping() drops a reference from the old page after
unfreezing its counter. Both operations can be merged into a single
atomic operation by directly unfreezing to one less reference.
The same applies to migrate_huge_page_move_mapping().
Signed-off-by: Jacobo Giralt <jacobo.giralt@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions