Messages in this thread | | | Date | Tue, 20 Jul 2021 13:44:42 +0300 | From | Mike Rapoport <> | Subject | Re: [PATCH v14 018/138] mm/filemap: Add folio_lock() |
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On Thu, Jul 15, 2021 at 04:35:04AM +0100, Matthew Wilcox (Oracle) wrote: > This is like lock_page() but for use by callers who know they have a folio. > Convert __lock_page() to be __folio_lock(). This saves one call to > compound_head() per contended call to lock_page(). > > Saves 455 bytes of text; mostly from improved register allocation and > inlining decisions. __folio_lock is 59 bytes while __lock_page was 79. > > 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/pagemap.h | 24 +++++++++++++++++++----- > mm/filemap.c | 29 +++++++++++++++-------------- > 2 files changed, 34 insertions(+), 19 deletions(-)
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
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