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ext4_mb_use_preallocated will ignore the demand to alloc goal blocks, although the EXT4_MB_HINT_GOAL_ONLY is requested. For group pa, ext4_mb_group_or_file will not set EXT4_MB_HINT_GROUP_ALLOC if EXT4_MB_HINT_GOAL_ONLY is set. So we will not alloc goal blocks from group pa if EXT4_MB_HINT_GOAL_ONLY is set. For inode pa, ext4_mb_pa_goal_check is added to check if free extent in found inode pa meets goal blocks when EXT4_MB_HINT_GOAL_ONLY is set. Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com> Suggested-by: Ojaswin Mujoo <ojaswin@linux.ibm.com> Link: https://lore.kernel.org/r/20230603150327.3596033-6-shikemeng@huaweicloud.com Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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.