This is a little series which serves the purpose to replace kmap() with
kmap_local_page() in btrfs/zstd.c. Actually this task is only accomplished
in patch 2/2.
Instead patch 1/2 is a pre-requisite for the above-mentioned replacement,
however, above all else, it has the purpose to conform the prototypes of
__kunmap_{local,atomic}() to their own correct semantics. Since those
functions don't make changes to the memory pointed by their arguments,
change the type of those arguments to become pointers to const void.
v5 -> v6: Delete an unnecessary assignment in 2/2 (thanks to Ira Weiny).
v4 -> v5: Use plain page_address() for pages which cannot come from Highmem
(instead of kmapping them); remove unnecessary initializations to NULL
in 2/2 (thanks to Ira Weiny).
v3 -> v4: Resend and add linux-mm to the list of recipients (thanks to
Andrew Morton).
Fabio M. De Francesco (2):
highmem: Make __kunmap_{local,atomic}() take "const void *"
btrfs: Replace kmap() with kmap_local_page() in zstd.c
arch/parisc/include/asm/cacheflush.h | 6 ++---
arch/parisc/kernel/cache.c | 2 +-
fs/btrfs/zstd.c | 33 +++++++++++-----------------
include/linux/highmem-internal.h | 10 ++++-----
mm/highmem.c | 2 +-
5 files changed, 23 insertions(+), 30 deletions(-)
--
2.36.1
