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Eric Biggers 4fa512ce70 fs/buffer.c: support fsverity in block_read_full_folio()
After each filesystem block (as represented by a buffer_head) has been
read from disk by block_read_full_folio(), verify it if needed.  The
verification is done on the fsverity_read_workqueue.  Also allow reads
of verity metadata past i_size, as required by ext4.

This is needed to support fsverity on ext4 filesystems where the
filesystem block size is less than the page size.

The new code is compiled away when CONFIG_FS_VERITY=n.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Tested-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Link: https://lore.kernel.org/r/20221223203638.41293-11-ebiggers@kernel.org
History 2023-01-09 19:06:09 -08:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.