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d55f7cb2e5
In register_bcache(), there are several cases we didn't set correct error info (return value and/or error message): - if kzalloc() fails, it needs to return ENOMEM and print "cannot allocate memory"; - if register_cache() fails, it's better to propagate its return value rather than using default EINVAL. Signed-off-by: Chao Yu <yuchao0@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Coly Li <colyli@suse.de> Link: https://lore.kernel.org/r/20211020143812.6403-4-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.