projects / linux.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 9a157dd) | patch
mm/mremap_pages: save a few cycles in get_dev_pagemap()
authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Fri, 2 Sep 2022 16:39:52 +0000 (18:39 +0200)
committerAndrew Morton <akpm@linux-foundation.org>
Mon, 12 Sep 2022 03:26:11 +0000 (20:26 -0700)
commite7b72c48d677c244aae5aee1a72bc57b84fd495c
tree025c3c2d45b68118deca13d0210b4b7e662d5325tree | snapshot
parent9a157dd8fe5ac32304eff8a7722e30352acaa7f0commit | diff
mm/mremap_pages: save a few cycles in get_dev_pagemap()

Use 'percpu_ref_tryget_live_rcu()' instead of 'percpu_ref_tryget_live()'
to save a few cycles when it is known that the rcu lock is already
taken/released.

Link: https://lkml.kernel.org/r/9ef1562a1975371360f3e263856e9f1c5749b656.1662136782.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
mm/memremap.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git