filemap: add filemap_get_folios_tag()

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[ Upstream commit 247f9e1fee ]

This is the equivalent of find_get_pages_range_tag(), except for folios
instead of pages.

One noteable difference is filemap_get_folios_tag() does not take in a
maximum pages argument.  It instead tries to fill a folio batch and stops
either once full (15 folios) or reaching the end of the search range.

The new function supports large folios, the initial function did not since
all callers don't use large folios.

Link: https://lkml.kernel.org/r/20230104211448.4804-3-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: Matthew Wilcow (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Stable-dep-of: c5d3f9b764 ("f2fs: compress: fix deadloop in f2fs_write_cache_pages()")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Vishal Moola (Oracle) 2023-01-04 13:14:27 -08:00 • committed by Greg Kroah-Hartman

parent 855516cb6e

commit 599befdd79

2 changed files with 56 additions and 0 deletions

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include/linux/pagemap.h

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54

mm/filemap.c

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