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For super block version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES, it doesn't make sense to check the feature sets. This patch checks super block version in bch_has_feature_* routines, if the version doesn't have feature sets yet, returns 0 (false) to the caller. Fixes:5342fd4255("bcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET") Fixes:ffa4703275("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket") Cc: stable@vger.kernel.org # 5.9+ Reported-and-tested-by: Bockholdt Arne <a.bockholdt@precitec-optronik.de> Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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.