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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-12-07 15:42:09 -0500 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-09-27 09:27:29 -0400 |
| commit | d389a4a8115518e2cc232649b012b72113fe8b67 (patch) | |
| tree | 70a73a4601468185f85efdec3c347f821ae42c5c /Documentation/core-api/mm-api.rst | |
| parent | 020853b6f5ead2849b055e9873ff7267ce584256 (diff) | |
| download | linux-stable-d389a4a8115518e2cc232649b012b72113fe8b67.tar.gz linux-stable-d389a4a8115518e2cc232649b012b72113fe8b67.tar.bz2 linux-stable-d389a4a8115518e2cc232649b012b72113fe8b67.zip | |
mm: Add folio flag manipulation functions
These new functions are the folio analogues of the various PageFlags
functions. If CONFIG_DEBUG_VM_PGFLAGS is enabled, we check the folio
is not a tail page at every invocation. This will also catch the
PagePoisoned case as a poisoned page has every bit set, which would
include PageTail.
This saves 1684 bytes of text with the distro-derived config that
I'm testing due to removing a double call to compound_head() in
PageSwapCache().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jeff Layton <jlayton@kernel.org>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Diffstat (limited to 'Documentation/core-api/mm-api.rst')
0 files changed, 0 insertions, 0 deletions