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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Zhang Yi
70b1c71b1f
[ Upstream commitd99748ef16] In EXT4_GOING_FLAGS_LOGFLUSH mode, the EXT4_FLAGS_SHUTDOWN flag was set before calling ext4_force_commit(). This caused ordered-mode data writeback (triggered by journal commit) to fail with -EIO, since ext4_do_writepages() checks for the shutdown flag. The journal would then be aborted prematurely before the commit could succeed. Fix this by calling ext4_force_commit() first, then setting the shutdown flag, so that pending data can be written back correctly. Note that moving ext4_force_commit() before setting the shutdown flag creates a small window in which new writes may occur and generate new journal transactions. When the journal is subsequently aborted, the new transactions will not be able to write to disk. This is intentional because LOGFLUSH's semantics are to flush pre-existing journal entries before shutdown, not to guarantee atomicity for writes that race with the ioctl. Fixes:783d948544("ext4: add EXT4_IOC_GOINGDOWN ioctl") Signed-off-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Baokun Li <libaokun@linux.alibaba.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260424104201.1930823-1-yi.zhang@huaweicloud.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> 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.