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e726138676
This patch introduces a new helper encompassing the implicit inner loop in __btrfs_run_delayed_refs which processes all the refs for a given head. The code is mostly copy/paste, the only difference is that if we detect a newer reference then -EAGAIN is returned so that callers can react correctly. Also, at the end of the loop the head is relocked and btrfs_merge_delayed_refs is run again to retain the pre-refactoring semantics. Signed-off-by: Nikolay Borisov <nborisov@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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.