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| author |   Christoph Hellwig <hch@lst.de> | 2022-06-21 09:49:44 +0200 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2022-07-25 17:45:37 +0200 |
| commit | f3e90c1ca93d18d03188ea2c2ca9c2ccc7ffad04 (patch) | |
| tree | 6108a181b3629aa782d021f3b517e525207d85da /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | btrfs: send: use boolean types for current inode status (diff) | |
| download | linux-dev-f3e90c1ca93d18d03188ea2c2ca9c2ccc7ffad04.tar.xz linux-dev-f3e90c1ca93d18d03188ea2c2ca9c2ccc7ffad04.zip | |
btrfs: remove extent writepage address space operation
Same as in commit 21b4ee7029c9 ("xfs: drop ->writepage completely"): we
can remove the callback as it's only used in one place - single page
writeback from memory reclaim and is not called for cgroup writeback at
all.
We only allow such writeback from kswapd, not from direct memory
reclaim, and so it is rarely used. When it comes from kswapd, it is
effectively random dirty page shoot-down, which is horrible for IO
patterns. We can rely on background writeback to clean all dirty pages
in an efficient way and not let it be interrupted by kswapd.
Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions