highmem: Provide generic variant of kmap_atomic*

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The kmap_atomic* interfaces in all architectures are pretty much the same
except for post map operations (flush) and pre- and post unmap operations.

Provide a generic variant for that.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/r/20201103095857.175939340@linutronix.de

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This commit is contained in:

Thomas Gleixner 2020-11-03 10:27:18 +01:00

parent 4f8b96cd47

commit 298fa1ad55

3 changed files with 211 additions and 18 deletions

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82

include/linux/highmem.h

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3

mm/Kconfig

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144

mm/highmem.c

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