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d809d1d2ed
[ Upstream commit bda3efaf774fb687c2b7a555aaec3006b14a8857 ] When splitting extent, if the second extent can not be dropped, we return -ENOMEM and use GFP_NOFAIL to preallocate an extent_status outside of i_es_lock and pass it to __es_remove_extent() to be used as the second extent. This ensures that __es_remove_extent() is executed successfully, thus ensuring consistency in the extent status tree. If the second extent is not undroppable, we simply drop it and return 0. Then retry is no longer necessary, remove it. Now, __es_remove_extent() will always remove what it should, maybe more. Suggested-by: Jan Kara <jack@suse.cz> Signed-off-by: Baokun Li <libaokun1@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230424033846.4732-6-libaokun1@huawei.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> Stable-dep-of: 8e387c89e96b ("ext4: make sure allocate pending entry not fail") Signed-off-by: Sasha Levin <sashal@kernel.org> |
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| README | ||
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.