Messages in this thread Patch in this message | | | From | Al Viro <> | Subject | [RFC PATCH 33/37] copy_page_from_iter(): don't need kmap_atomic() for kvec/bvec cases | Date | Sun, 6 Jun 2021 19:10:47 +0000 |
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kmap_local_page() is enough.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> --- lib/iov_iter.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index 4fcd0cc44e47..0a9e246178c1 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -882,9 +882,9 @@ size_t copy_page_from_iter(struct page *page, size_t offset, size_t bytes, if (likely(iter_is_iovec(i))) return copy_page_from_iter_iovec(page, offset, bytes, i); if (iov_iter_is_bvec(i) || iov_iter_is_kvec(i) || iov_iter_is_xarray(i)) { - void *kaddr = kmap_atomic(page); + void *kaddr = kmap_local_page(page); size_t wanted = _copy_from_iter(kaddr + offset, bytes, i); - kunmap_atomic(kaddr); + kunmap_local(kaddr); return wanted; } WARN_ON(1); -- 2.11.0
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