linux-next.git/include/linux/pagevec.h, branch master

folio_batch: rename pagevec.h to folio_batch.h

2026-04-05T20:53:07+00:00

struct pagevec was removed in commit 1e0877d58b1e ("mm: remove struct pagevec"). Rename include/linux/pagevec.h to reflect reality and update includes tree-wide. Add the new filename to MAINTAINERS explicitly, as it no longer matches the "include/linux/page[-_]*" pattern in MEMORY MANAGEMENT - CORE. Link: https://lkml.kernel.org/r/20260225-pagevec_cleanup-v2-3-716868cc2d11@columbia.edu Signed-off-by: Tal Zussman Acked-by: David Hildenbrand (Arm) Reviewed-by: Jan Kara Acked-by: Zi Yan Reviewed-by: Lorenzo Stoakes (Oracle) Cc: Chris Li Cc: Christian Brauner Cc: Matthew Wilcox (Oracle) Signed-off-by: Andrew Morton

mm: remove stray references to struct pagevec

2026-04-05T20:53:06+00:00

Patch series "mm: Remove stray references to pagevec", v2. struct pagevec was removed in commit 1e0877d58b1e ("mm: remove struct pagevec"). Remove any stray references to it and rename relevant files and macros accordingly. While at it, remove unnecessary #includes of pagevec.h (now folio_batch.h) in .c files. There are probably more of these that could be removed in .h files, but those are more complex to verify. This patch (of 4): struct pagevec was removed in commit 1e0877d58b1e ("mm: remove struct pagevec"). Remove remaining forward declarations and change __folio_batch_release()'s declaration to match its definition. Link: https://lkml.kernel.org/r/20260225-pagevec_cleanup-v2-0-716868cc2d11@columbia.edu Link: https://lkml.kernel.org/r/20260225-pagevec_cleanup-v2-1-716868cc2d11@columbia.edu Signed-off-by: Tal Zussman Reviewed-by: Matthew Wilcox (Oracle) Acked-by: David Hildenbrand (Arm) Acked-by: Chris Li Acked-by: Zi Yan Reviewed-by: Lorenzo Stoakes (Oracle) Cc: Christian Brauner Cc: Jan Kara Signed-off-by: Andrew Morton

pagevec.h: add `const` to pointer parameters of getter functions

2025-09-13T23:55:24+00:00

For improved const-correctness. Link: https://lkml.kernel.org/r/20250828130311.772993-1-max.kellermann@ionos.com Signed-off-by: Max Kellermann Reviewed-by: Matthew Wilcox (Oracle) Reviewed-by: Lorenzo Stoakes Acked-by: SeongJae Park Reviewed-by: Vishal Moola (Oracle) Cc: David Hildenbrand Cc: Vlastimil Babka Signed-off-by: Andrew Morton

mm: increase folio batch size

2024-03-26T18:07:20+00:00

On a 104 thread, 2 socket Skylake system, Intel report a 4.7% performance reduction with will-it-scale page_fault2. This was due to reducing the size of the batch from 32 to 15. Increasing the folio batch size from 15 to 31 gives a performance increase of 12.5% relative to the original, or 17.2% relative to the reduced performance commit. The penalty of this commit is an additional 128 bytes of stack usage. Six folio_batches are also allocated from percpu memory in cpu_fbatches so that will be an additional 768 bytes of percpu memory (per CPU). Tim Chen originally submitted a patch like this in 2020: https://lore.kernel.org/linux-mm/d1cc9f12a8ad6c2a52cb600d93b06b064f2bbc57.1593205965.git.tim.c.chen@linux.intel.com/ Link: https://lkml.kernel.org/r/20240315140823.2478146-1-willy@infradead.org Fixes: 99fbb6bfc16f ("mm: make folios_put() the basis of release_pages()") Signed-off-by: Matthew Wilcox (Oracle) Tested-by: Yujie Liu Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-lkp/202403151058.7048f6a8-oliver.sang@intel.com Signed-off-by: Andrew Morton

pagevec: add ability to iterate a queue

2024-02-24T01:48:37+00:00

Add a loop counter inside the folio_batch to let us iterate from 0-nr instead of decrementing nr and treating the batch as a stack. It would generate some very weird and suboptimal I/O patterns for page writeback to iterate over the batch as a stack. Link: https://lkml.kernel.org/r/20240215063649.2164017-11-hch@lst.de Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Christoph Hellwig Reviewed-by: Brian Foster Reviewed-by: Jan Kara Acked-by: Dave Chinner Cc: Christian Brauner Cc: David Howells Signed-off-by: Andrew Morton

mm: remove struct pagevec

2023-06-23T23:59:30+00:00

All users are now converted to use the folio_batch so we can get rid of this data structure. Link: https://lkml.kernel.org/r/20230621164557.3510324-11-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Andrew Morton

pagevec: rename fbatch_count()

2023-06-23T23:59:29+00:00

This should always have been called folio_batch_count(). Link: https://lkml.kernel.org/r/20230621164557.3510324-8-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Andrew Morton

mm: add __folio_batch_release()

2023-06-23T23:59:28+00:00

This performs the same role as __pagevec_release(), ie skipping the check for batch length of 0. Link: https://lkml.kernel.org/r/20230621164557.3510324-3-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Andrew Morton

filemap: remove find_get_pages_range_tag()

2023-02-03T06:33:18+00:00

All callers to find_get_pages_range_tag(), find_get_pages_tag(), pagevec_lookup_range_tag(), and pagevec_lookup_tag() have been removed. Link: https://lkml.kernel.org/r/20230104211448.4804-24-vishal.moola@gmail.com Signed-off-by: Vishal Moola (Oracle) Signed-off-by: Andrew Morton

mm: pagevec: add folio_batch_reinit()

2023-02-03T06:33:04+00:00

Patch series "update mlock to use folios", v4. This series updates mlock to use folios, converting the internal interface to using folios exclusively and exposing the folio interface externally. As a product of this we move to using a folio batch rather than a pagevec for mlock folios, which brings it in line with the core folio batches contained in mm/swap.c. This patch (of 5): This performs the same task as pagevec_reinit(), only modifying a folio batch rather than a pagevec. Link: https://lkml.kernel.org/r/cover.1673526881.git.lstoakes@gmail.com Link: https://lkml.kernel.org/r/9018cecacb39e34c883540f997f9be8281153613.1673526881.git.lstoakes@gmail.com Signed-off-by: Lorenzo Stoakes Acked-by: Vlastimil Babka Cc: Christian Brauner Cc: Geert Uytterhoeven Cc: Hugh Dickins Cc: Joel Fernandes (Google) Cc: Jonathan Corbet Cc: Liam R. Howlett Cc: Matthew Wilcox Cc: Mike Rapoport (IBM) Cc: William Kucharski Signed-off-by: Andrew Morton