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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-28 15:31:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-28 15:31:03 -0800 |
| commit | c8994374d90b5823b3b29a5e5d8648ac418b57b4 (patch) | |
| tree | 5fed3aac30bbffc7891969f559ff834403fd2311 /include | |
| parent | f0d874414329a86b67198cb0299d0dc9310592f1 (diff) | |
| parent | da3a3da4e6c68459618a1043dcb12b450312a4e2 (diff) | |
Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt
Pull fsverity updates from Eric Biggers:
- Optimize fs-verity sequential read performance by implementing
readahead of Merkle tree pages. This allows the Merkle tree to be
read in larger chunks.
- Optimize FS_IOC_ENABLE_VERITY performance in the uncached case by
implementing readahead of data pages.
- Allocate the hash requests from a mempool in order to eliminate the
possibility of allocation failures during I/O.
* tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt:
fs-verity: use u64_to_user_ptr()
fs-verity: use mempool for hash requests
fs-verity: implement readahead of Merkle tree pages
fs-verity: implement readahead for FS_IOC_ENABLE_VERITY
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fsverity.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/fsverity.h b/include/linux/fsverity.h index 3b6b8ccebe7d..ecc604e61d61 100644 --- a/include/linux/fsverity.h +++ b/include/linux/fsverity.h @@ -77,6 +77,10 @@ struct fsverity_operations { * * @inode: the inode * @index: 0-based index of the page within the Merkle tree + * @num_ra_pages: The number of Merkle tree pages that should be + * prefetched starting at @index if the page at @index + * isn't already cached. Implementations may ignore this + * argument; it's only a performance optimization. * * This can be called at any time on an open verity file, as well as * between ->begin_enable_verity() and ->end_enable_verity(). It may be @@ -87,7 +91,8 @@ struct fsverity_operations { * Return: the page on success, ERR_PTR() on failure */ struct page *(*read_merkle_tree_page)(struct inode *inode, - pgoff_t index); + pgoff_t index, + unsigned long num_ra_pages); /** * Write a Merkle tree block to the given inode. |