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[ Upstream commite219aecfd4] When f2fs chooses GC victim in large section & LFS mode, next_victim_seg[gc_type] is referenced first. After segment is freed, next_victim_seg[gc_type] has the next segment number. However, next_victim_seg[gc_type] still has the last segment number even after the last segment of section is freed. In this case, when f2fs chooses a victim for the next GC round, the last segment of previous victim section is chosen as a victim. Initialize next_victim_seg[gc_type] to NULL_SEGNO for the last segment in large section. Fixes:e3080b0120("f2fs: support subsectional garbage collection") Signed-off-by: Yonggil Song <yonggil.song@samsung.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> 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.