mm/writeback: Add folio_mark_dirty()

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Reimplement set_page_dirty() as a wrapper around folio_mark_dirty().
There is no change to filesystems as they were already being called
with the compound_head of the page being marked dirty.  We avoid
several calls to compound_head(), both statically (through
using folio_test_dirty() instead of PageDirty() and dynamically by
calling folio_mapping() instead of page_mapping().

Also return bool instead of int to show the range of values actually
returned, and add kernel-doc.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Howells <dhowells@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>

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This commit is contained in:

Matthew Wilcox (Oracle) 2021-04-26 23:53:10 -04:00

parent f143f1ea5a

commit b5e84594ca

3 changed files with 27 additions and 17 deletions

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3

include/linux/mm.h

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6

mm/folio-compat.c

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35

mm/page-writeback.c

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