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| author | Eric Biggers <ebiggers@google.com> | 2019-07-22 19:26:24 +0300 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2019-08-13 05:33:51 +0300 |
| commit | 22cfe4b48ccb5a3dbb92d6dcb88f396e0f400f74 (patch) | |
| tree | a542a34c4ff891e8b361b18c55602304e6487371 /Documentation/filesystems/ext4/super.rst | |
| parent | c93d8f88580921c84d2213161ef3c22560511b84 (diff) | |
| download | linux-22cfe4b48ccb5a3dbb92d6dcb88f396e0f400f74.tar.xz | |
ext4: add fs-verity read support
Make ext4_mpage_readpages() verify data as it is read from fs-verity
files, using the helper functions from fs/verity/.
To support both encryption and verity simultaneously, this required
refactoring the decryption workflow into a generic "post-read
processing" workflow which can do decryption, verification, or both.
The case where the ext4 block size is not equal to the PAGE_SIZE is not
supported yet, since in that case ext4_mpage_readpages() sometimes falls
back to block_read_full_page(), which does not support fs-verity yet.
Co-developed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Diffstat (limited to 'Documentation/filesystems/ext4/super.rst')
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