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| author | Yin Fengwei <fengwei.yin@intel.com> | 2023-08-02 18:14:02 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-25 02:20:26 +0300 |
| commit | de74976eb65151a2f568e477fc2e0032df5b22b4 (patch) | |
| tree | fa36b6e03679eeaad213a391dde09527a9d665bf /mm/swap.c | |
| parent | 9f1f5b60e76d44fa85fef6970b7477f72d3999eb (diff) | |
| download | linux-de74976eb65151a2f568e477fc2e0032df5b22b4.tar.xz | |
filemap: add filemap_map_folio_range()
filemap_map_folio_range() maps partial/full folio. Comparing to original
filemap_map_pages(), it updates refcount once per folio instead of per
page and gets minor performance improvement for large folio.
With a will-it-scale.page_fault3 like app (change file write fault testing
to read fault testing. Trying to upstream it to will-it-scale at [1]),
got 2% performance gain on a 48C/96T Cascade Lake test box with 96
processes running against xfs.
[1]: https://github.com/antonblanchard/will-it-scale/pull/37
Link: https://lkml.kernel.org/r/20230802151406.3735276-35-willy@infradead.org
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/swap.c')
0 files changed, 0 insertions, 0 deletions