mm: add folio_add_new_anon_rmap()

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In contrast to other rmap functions, page_add_new_anon_rmap() is always
called with a freshly allocated page.  That means it can't be called with
a tail page.  Turn page_add_new_anon_rmap() into folio_add_new_anon_rmap()
and add a page_add_new_anon_rmap() wrapper.  Callers can be converted
individually.

[akpm@linux-foundation.org: fix NOMMU build.  page_add_new_anon_rmap() requires CONFIG_MMU]
[willy@infradead.org: folio-compat.c needs rmap.h]
Link: https://lkml.kernel.org/r/20230111142915.1001531-9-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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This commit is contained in:

Matthew Wilcox (Oracle) 2023-01-11 14:28:54 +00:00 • committed by Andrew Morton

parent eb01a2ad7e

commit 4d510f3da4

3 changed files with 31 additions and 19 deletions

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2

include/linux/rmap.h

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11

mm/folio-compat.c

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37

mm/rmap.c

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