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| author | Eric Biggers <[email protected]> | 2022-08-18 22:40:10 +0000 |
|---|---|---|
| committer | Eric Biggers <[email protected]> | 2022-08-19 22:19:55 +0000 |
| commit | 8377e8a24bba1ae73b3869bc71ee9df16b6bef61 (patch) | |
| tree | 6ae78bff5700d3ff9586cd3b0dbe16b2509129aa | |
| parent | fs-verity: use memcpy_from_page() (diff) | |
| download | kernel-8377e8a24bba1ae73b3869bc71ee9df16b6bef61.tar.gz kernel-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 <[email protected]>
Reviewed-by: Fabio M. De Francesco <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
| -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; |