diff options
| author | Eric Biggers <ebiggers@google.com> | 2022-08-18 15:40:10 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2022-08-19 15:19:55 -0700 |
| commit | 8377e8a24bba1ae73b3869bc71ee9df16b6bef61 (patch) | |
| tree | 6ae78bff5700d3ff9586cd3b0dbe16b2509129aa /fs/verity | |
| parent | c987918a3fdf2d361c48839ec324f2547418f9d6 (diff) | |
| download | lwn-8377e8a24bba1ae73b3869bc71ee9df16b6bef61.tar.gz lwn-8377e8a24bba1ae73b3869bc71ee9df16b6bef61.zip | |
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 <ebiggers@google.com>
Reviewed-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20220818224010.43778-1-ebiggers@kernel.org
Diffstat (limited to 'fs/verity')
| -rw-r--r-- | fs/verity/read_metadata.c | 6 |
1 files 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; |