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| author | Tejun Heo <tj@kernel.org> | 2014-09-02 14:46:05 -0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2014-09-02 14:46:05 -0400 |
| commit | 9c824b6a172c8d44a6b037946bae90127c969b1b (patch) | |
| tree | 32a8eb3ce9e3866ff8194d7fdfc5203bb5184e0e /mm/percpu-km.c | |
| parent | 5835d96e9ce4efdba8c6cefffc2f1575925456de (diff) | |
| download | linux-9c824b6a172c8d44a6b037946bae90127c969b1b.tar.bz2 | |
percpu: make sure chunk->map array has available space
An allocation attempt may require extending chunk->map array which
requires GFP_KERNEL context which isn't available for atomic
allocations. This patch ensures that chunk->map array usually keeps
some amount of available space by directly allocating buffer space
during GFP_KERNEL allocations and scheduling async extension during
atomic ones. This should make atomic allocation failures from map
space exhaustion rare.
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'mm/percpu-km.c')
0 files changed, 0 insertions, 0 deletions