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Below dmesg was printed when testing generic/388 of fstest: F2FS-fs (zram1): find_fsync_dnodes: detect looped node chain, blkaddr:526615, next:526616 F2FS-fs (zram1): Cannot recover all fsync data errno=-22 F2FS-fs (zram1): Mounted with checkpoint version = 22300d0e F2FS-fs (zram1): find_fsync_dnodes: detect looped node chain, blkaddr:526615, next:526616 F2FS-fs (zram1): Cannot recover all fsync data errno=-22 The reason is that we initialize free_blocks with free blocks of filesystem, so if filesystem is full, free_blocks can be zero, below condition will be true, so that, it will fail recovery. if (++loop_cnt >= free_blocks || blkaddr == next_blkaddr_of_node(page)) To fix this issue, initialize free_blocks with correct value which includes over-privision blocks. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.