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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-03-24 04:29:04 +0300 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-04-01 20:45:33 +0300 |
| commit | 704528d895dd3e7b173e672116b4eb2b0a0fceb0 (patch) | |
| tree | 2fd71b29ddd4e61c18b5114f94bd5433bbbda00d /Documentation/filesystems/fsverity.rst | |
| parent | ebf921a9fac38560e0fc3a4381e163a6969efd5a (diff) | |
| download | linux-704528d895dd3e7b173e672116b4eb2b0a0fceb0.tar.xz | |
fs: Remove ->readpages address space operation
All filesystems have now been converted to use ->readahead, so
remove the ->readpages operation and fix all the comments that
used to refer to it.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'Documentation/filesystems/fsverity.rst')
| -rw-r--r-- | Documentation/filesystems/fsverity.rst | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/filesystems/fsverity.rst b/Documentation/filesystems/fsverity.rst index 1d831e3cbcb3..8cc536d08f51 100644 --- a/Documentation/filesystems/fsverity.rst +++ b/Documentation/filesystems/fsverity.rst @@ -549,7 +549,7 @@ Pagecache ~~~~~~~~~ For filesystems using Linux's pagecache, the ``->readpage()`` and -``->readpages()`` methods must be modified to verify pages before they +``->readahead()`` methods must be modified to verify pages before they are marked Uptodate. Merely hooking ``->read_iter()`` would be insufficient, since ``->read_iter()`` is not used for memory maps. @@ -611,7 +611,7 @@ workqueue, and then the workqueue work does the decryption or verification. Finally, pages where no decryption or verity error occurred are marked Uptodate, and the pages are unlocked. -Files on ext4 and f2fs may contain holes. Normally, ``->readpages()`` +Files on ext4 and f2fs may contain holes. Normally, ``->readahead()`` simply zeroes holes and sets the corresponding pages Uptodate; no bios are issued. To prevent this case from bypassing fs-verity, these filesystems use fsverity_verify_page() to verify hole pages. @@ -778,7 +778,7 @@ weren't already directly answered in other parts of this document. - To prevent bypassing verification, pages must not be marked Uptodate until they've been verified. Currently, each filesystem is responsible for marking pages Uptodate via - ``->readpages()``. Therefore, currently it's not possible for + ``->readahead()``. Therefore, currently it's not possible for the VFS to do the verification on its own. Changing this would require significant changes to the VFS and all filesystems. |