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| author | Barry Song <v-songbaohua@oppo.com> | 2024-02-21 22:10:28 +1300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-02-23 17:48:34 -0800 |
| commit | e26f0b939df49d17bda8d5faa4813a255734e8c8 (patch) | |
| tree | 03699017182abedce2961344e422ade45e9ceca5 /mm/madvise.c | |
| parent | b4d3de57cab266fcb536007bf51f42249af364c3 (diff) | |
| download | tip-e26f0b939df49d17bda8d5faa4813a255734e8c8.tar.gz | |
mm/swapfile:__swap_duplicate: drop redundant WRITE_ONCE on swap_map for err cases
The code is quite hard to read, we are still writing swap_map after
errors happen. Though the written value is as before,
has_cache = count & SWAP_HAS_CACHE;
count &= ~SWAP_HAS_CACHE;
[snipped]
WRITE_ONCE(p->swap_map[offset], count | has_cache);
It would be better to entirely drop the WRITE_ONCE for both
performance and readability.
[akpm@linux-foundation.org: avoid using goto]
Link: https://lkml.kernel.org/r/20240221091028.123122-1-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/madvise.c')
0 files changed, 0 insertions, 0 deletions