4b2201dad2
bdev->bd_super is a somewhat awkward backpointer from a block device to an owning file system with unclear rules. For the buffer_head code we already have a good backpointer for the inode that the buffer_head is associated with, even if it lives on the block device mapping: b_assoc_map. It is used track dirty buffers associated with an inode but living on the block device mapping like directory buffers in ext4. mark_buffer_write_io_error already uses it for the call to mapping_set_error, and should be doing the same for the per-sb error sequence. Signed-off-by: Christoph Hellwig <hch@lst.de> Message-Id: <20230807112625.652089-2-hch@lst.de> Signed-off-by: Christian Brauner <brauner@kernel.org>
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.