From 55ca375c5dcc7aebd89de42f00ff18f5c40d25f3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 27 Apr 2021 12:33:24 -0400 Subject: [PATCH] copy_page_from_iter(): don't need kmap_atomic() for kvec/bvec cases kmap_local_page() is enough. Signed-off-by: Al Viro --- 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 8aff4eb4fdfd..ba7eb6557750 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -871,9 +871,9 @@ 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); -- 2.20.1