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(parent: 0a11c00) | 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)
commit703b01a2f2df8bccb82d5c361852d511d987b9a9
tree025c3c2d45b68118deca13d0210b4b7e662d5325tree | snapshot
parent0a11c00aaa47b41d76df88d13d33b0e23f559e4acommit | 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
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