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Commit8e33fadf94("ext4: remove an unnecessary if statement in __ext4_get_inode_loc()") forget to recheck buffer's uptodate bit again under buffer lock, which may overwrite the buffer if someone else have already brought it uptodate and changed it. Fixes:8e33fadf94("ext4: remove an unnecessary if statement in __ext4_get_inode_loc()") Cc: stable@kernel.org Signed-off-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Link: https://lore.kernel.org/r/20210910080316.70421-1-yi.zhang@huawei.com
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.