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6c9ac8be45
btrfs_truncate_block() itself is already mostly subpage compatible, the only missing part is the page dirtying code. Currently if we have a sector that needs to be truncated, we set the sector aligned range delalloc, then set the full page dirty. The problem is, current subpage code requires subpage dirty bit to be set, or __extent_writepage_io() won't submit bio, thus leads to ordered extent never to finish. So this patch will make btrfs_truncate_block() to call btrfs_page_set_dirty() helper to replace set_page_dirty() to fix the problem. Tested-by: Ritesh Harjani <riteshh@linux.ibm.com> # [ppc64] Tested-by: Anand Jain <anand.jain@oracle.com> # [aarch64] Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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.