mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-05 02:21:52 +09:00
22bb11b3d5
[ Upstream commit 1283b8c125a83bf7a7dbe90c33d3472b6d7bf612 ] At btrfs_reclaim_bgs_work(), we are grabbing a block group's zone unusable bytes while not under the protection of the block group's spinlock, so this can trigger race reports from KCSAN (or similar tools) since that field is typically updated while holding the lock, such as at __btrfs_add_free_space_zoned() for example. Fix this by grabbing the zone unusable bytes while we are still in the critical section holding the block group's spinlock, which is right above where we are currently grabbing it. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Sasha Levin <sashal@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.