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21e478ddb2
Bcache allocates a whole bucket to store c->uuids on cache device, and allocates continuous pages to store it in-memory. When the bucket size exceeds maximum allocable continuous pages, bch_cache_set_alloc() will fail and cache device registration will fail. This patch allocates c->uuids by alloc_meta_bucket_pages(), and uses ilog2(meta_bucket_pages(c)) to indicate order of c->uuids pages when free it. When writing c->uuids to cache device, its size is decided by meta_bucket_pages(c) * PAGE_SECTORS. Now c->uuids is properly handled for bucket size > 8MB. Signed-off-by: Coly Li <colyli@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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| init | ||
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| .cocciconfig | ||
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| README | ||
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.