lkml.org 
[lkml]   [2021]   [Jul]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH v14 018/138] mm/filemap: Add folio_lock()
    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>

    \
     
     \ /
      Last update: 2021-07-20 12:56    [W:4.107 / U:0.024 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site