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| author | Vitaly Wool <vitalywool@gmail.com> | 2018-04-06 02:23:32 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-06 07:36:25 +0300 |
| commit | 5c9bab592f53328b3e00d7293378b714abf47a2a (patch) | |
| tree | 8785d51da7ca697c8a781e56d309f341e3bb13a3 /mm/vmscan.c | |
| parent | 605ca5ede7643a01f4c4a15913f9714ac297f8a6 (diff) | |
| download | linux-5c9bab592f53328b3e00d7293378b714abf47a2a.tar.xz | |
z3fold: limit use of stale list for allocation
Currently if z3fold couldn't find an unbuddied page it would first try
to pull a page off the stale list. The problem with this approach is
that we can't 100% guarantee that the page is not processed by the
workqueue thread at the same time unless we run cancel_work_sync() on
it, which we can't do if we're in an atomic context. So let's just
limit stale list usage to non-atomic contexts only.
Link: http://lkml.kernel.org/r/47ab51e7-e9c1-d30e-ab17-f734dbc3abce@gmail.com
Signed-off-by: Vitaly Vul <vitaly.vul@sony.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: <Oleksiy.Avramchenko@sony.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
0 files changed, 0 insertions, 0 deletions