dm thin: replace spin_lock_irqsave with spin_lock_irq

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If we are in a place where it is known that interrupts are enabled,
functions spin_lock_irq/spin_unlock_irq should be used instead of
spin_lock_irqsave/spin_unlock_irqrestore.

spin_lock_irq and spin_unlock_irq are faster because they don't need to
push and pop the flags register.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

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Mikulas Patocka 2019-10-15 08:16:29 -04:00 • committed by Mike Snitzer

parent 52c67d416b

commit 8e0c9dacc3

1 changed files with 46 additions and 67 deletions

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113

drivers/md/dm-thin.c

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