drivers/staging/exfat: Replace binary semaphores for mutexes

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At a slight footprint cost (24 vs 32 bytes), mutexes are more optimal
than semaphores; it's also a nicer interface for mutual exclusion,
which is why they are encouraged over binary semaphores, when possible.

For both v_sem and z_sem, their semantics imply traditional lock
ownership; that is, the lock owner is the same for both lock/unlock
operations. Therefore it is safe to convert.

Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Acked-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Link: https://lore.kernel.org/r/20191030144916.10802-1-dave@stgolabs.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Davidlohr Bueso 2019-10-30 07:49:16 -07:00 • committed by Greg Kroah-Hartman

parent ebc8f4f603

commit 3ae82f449c

2 changed files with 43 additions and 43 deletions

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drivers/staging/exfat/exfat.h

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84

drivers/staging/exfat/exfat_super.c

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