From 8377e8a24bba1ae73b3869bc71ee9df16b6bef61 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Thu, 18 Aug 2022 15:40:10 -0700 Subject: [PATCH] fs-verity: use kmap_local_page() instead of kmap() Convert the use of kmap() to its recommended replacement kmap_local_page(). This avoids the overhead of doing a non-local mapping, which is unnecessary in this case. Signed-off-by: Eric Biggers Reviewed-by: Fabio M. De Francesco Link: https://lore.kernel.org/r/20220818224010.43778-1-ebiggers@kernel.org --- fs/verity/read_metadata.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/verity/read_metadata.c b/fs/verity/read_metadata.c index 6ee849dc7bc1..2aefc5565152 100644 --- a/fs/verity/read_metadata.c +++ b/fs/verity/read_metadata.c @@ -53,14 +53,14 @@ static int fsverity_read_merkle_tree(struct inode *inode, break; } - virt = kmap(page); + virt = kmap_local_page(page); if (copy_to_user(buf, virt + offs_in_page, bytes_to_copy)) { - kunmap(page); + kunmap_local(virt); put_page(page); err = -EFAULT; break; } - kunmap(page); + kunmap_local(virt); put_page(page); retval += bytes_to_copy;