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Vineet Gupta 1db604f676 include/linux/bitops.h: set_mask_bits() to return old value
| > Also, set_mask_bits is used in fs quite a bit and we can possibly come up
| > with a generic llsc based implementation (w/o the cmpxchg loop)
|
| May I also suggest changing the return value of set_mask_bits() to old.
|
| You can compute the new value given old, but you cannot compute the old
| value given new, therefore old is the better return value. Also, no
| current user seems to use the return value, so changing it is without
| risk.

Link: http://lkml.kernel.org/g/20150807110955.GH16853@twins.programming.kicks-ass.net
Link: http://lkml.kernel.org/r/1548275584-18096-4-git-send-email-vgupta@synopsys.com
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07 18:32:00 -08:00
..
acpi ACPI updates for 5.1-rc1 2019-03-06 13:33:11 -08:00
asm-generic Char/Misc driver patches for 5.1-rc1 2019-03-06 14:18:59 -08:00
clocksource
crypto crypto: export arc4 defines 2019-02-15 13:21:55 +08:00
drm Char/Misc driver patches for 5.1-rc1 2019-03-06 14:18:59 -08:00
dt-bindings Staging/IIO patches for 5.1-rc1 2019-03-06 16:29:27 -08:00
keys KEYS: user: Align the payload buffer 2019-02-22 10:11:19 -08:00
kvm KVM: arm/arm64: vgic: Make vgic_cpu->ap_list_lock a raw_spinlock 2019-01-24 15:09:09 +01:00
linux include/linux/bitops.h: set_mask_bits() to return old value 2019-03-07 18:32:00 -08:00
math-emu
media
memory
misc
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-03-04 13:26:15 -08:00
pcmcia
ras
rdma RDMA/device: Expose ib_device_try_get(() 2019-01-21 14:33:08 -07:00
scsi 4.21 merge window pull request 2018-12-28 14:57:10 -08:00
soc This pull request contains Broadcom ARM/ARM64/MIPS based SoCs changes 2019-02-15 18:01:17 +01:00
sound Char/Misc driver patches for 5.1-rc1 2019-03-06 14:18:59 -08:00
target
trace Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-03-05 08:26:13 -08:00
uapi linux/kernel.h: split *_MAX and *_MIN macros into <linux/limits.h> 2019-03-07 18:31:59 -08:00
video
xen arm64/xen: fix xen-swiotlb cache flushing 2019-01-23 22:14:56 +01:00