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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2023-01-16 19:39:39 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-02 22:33:21 -0800 |
| commit | 8808ecab3afc18958a9216911cd7967017e7057c (patch) | |
| tree | fbfd9f9c385f7244447b2de4d7f9b52ab8fd33a8 /mm/page_alloc.c | |
| parent | 5b4bd90f9ac76136c7148684b12276d4ae2d64a2 (diff) | |
filemap: convert filemap_map_pmd() to take a folio
Patch series "Some more filemap folio conversions".
Three more places which could easily be converted to folios. The third
one fixes a minor bug in readahead_expand(), but it's only a performance
bug and there are few users of readahead_expand(), so I don't think it's
worth backporting.
This patch (of 3):
Save a few calls to compound_head(). We specify exactly which page from
the folio to use by passing in start_pgoff, which means this will work for
a folio which is larger than PMD size. The rest of the VM isn't prepared
for that yet, but now this function is.
Link: https://lkml.kernel.org/r/20230116193941.2148487-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20230116193941.2148487-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions