Messages in this thread | | | Date | Tue, 20 Jul 2021 13:43:21 +0300 | From | Mike Rapoport <> | Subject | Re: [PATCH v14 010/138] mm: Add folio flag manipulation functions |
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On Thu, Jul 15, 2021 at 04:34:56AM +0100, Matthew Wilcox (Oracle) wrote: > 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> > --- > include/linux/page-flags.h | 219 ++++++++++++++++++++++++++----------- > 1 file changed, 156 insertions(+), 63 deletions(-)
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
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