Davidlohr Bueso d5c8238849 btrfs: convert data_seqcount to seqcount_mutex_t
By doing so we can associate the sequence counter to the chunk_mutex
for lockdep purposes (compiled-out otherwise), the mutex is otherwise
used on the write side.
Also avoid explicitly disabling preemption around the write region as it
will now be done automatically by the seqcount machinery based on the
lock type.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-10-27 15:11:51 +01:00
2020-10-04 16:04:34 -07:00

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.
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