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e87ddea345
First, writeback bdev ->bitmap bits are set only from one context, as we can have only one single task performing writeback, so we cannot race with anything else. Remove retry path. Second, we always check ZRAM_WB flag to distinguish writtenback slots, so we should not confuse 0 bdev block index and 0 handle. We can use first bdev block (0 bit) for writeback as well. While at it, give functions slightly more accurate names, as we don't alloc/free anything there, we reserve a block for async writeback or release the block. Link: https://lkml.kernel.org/r/20251122074029.3948921-6-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Reviewed-by: Brian Geffon <bgeffon@google.com> Cc: Minchan Kim <minchan@google.com> Cc: Richard Chang <richardycc@google.com> Cc: Yuwen Chen <ywen.chen@foxmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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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 reStructuredText 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.