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| author |   David Rientjes <rientjes@google.com> | 2014-08-06 16:07:31 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-06 18:01:21 -0700 |
| commit | 9ef0a0ffa28edbf5c7cfa6be73b4ecb9896a3875 (patch) | |
| tree | 6c0d71402e6c354b97eb04f4f62f00cee138ccb6 /mm/slub.c | |
| parent | mm, thp: only collapse hugepages to nodes with affinity for zone_reclaim_mode (diff) | |
| download | linux-dev-9ef0a0ffa28edbf5c7cfa6be73b4ecb9896a3875.tar.xz linux-dev-9ef0a0ffa28edbf5c7cfa6be73b4ecb9896a3875.zip | |
mm, writeback: prevent race when calculating dirty limits
Setting vm_dirty_bytes and dirty_background_bytes is not protected by
any serialization.
Therefore, it's possible for either variable to change value after the
test in global_dirty_limits() to determine whether available_memory
needs to be initialized or not.
Always ensure that available_memory is properly initialized.
Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slub.c')
0 files changed, 0 insertions, 0 deletions