Messages in this thread | | | From | "Fabio M. De Francesco" <> | Subject | [PATCH v5 0/2] btrfs: Replace kmap() with kmap_local_page() in zstd.c | Date | Mon, 4 Jul 2022 17:23:20 +0200 |
| |
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.
v4 -> v5: Use plain page_address() for pages which cannot come from Highmem (instead of kmapping them); remove unnecessary initialisations to NULL (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 | 34 ++++++++++++---------------- include/linux/highmem-internal.h | 10 ++++---- mm/highmem.c | 2 +- 5 files changed, 24 insertions(+), 30 deletions(-)
-- 2.36.1
| |