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mm: use kmap_local_page in memzero_page 

The commit message introducing the global memzero_page explicitly
mentions switching to kmap_local_page in the commit log but doesn't
actually do that.

Link: https://lkml.kernel.org/r/20210713055231.137602-3-hch@lst.de
Fixes: 28961998f8 ("iov_iter: lift memzero_page() to highmem.h")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2021-07-23 15:50:20 -07:00 committed by Linus Torvalds
parent 8dad53a11f
commit d9a42b53bd
1 changed files with 2 additions and 2 deletions
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4
include/linux/highmem.h
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@ -324,10 +324,10 @@ static inline void memcpy_to_page(struct page *page, size_t offset,
static inline void memzero_page(struct page *page, size_t offset, size_t len) static inline void memzero_page(struct page *page, size_t offset, size_t len)
{ {
char *addr = kmap_atomic(page); char *addr = kmap_local_page(page);
memset(addr + offset, 0, len); memset(addr + offset, 0, len);
flush_dcache_page(page); flush_dcache_page(page);
kunmap_atomic(addr); kunmap_local(addr);
} }
#endif /* _LINUX_HIGHMEM_H */ #endif /* _LINUX_HIGHMEM_H */