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Here we use the READ_ONCE to fix race conditions in ->d_compare() and ->d_hash() when they are called in RCU-walk mode, seems we can use the normal helper d_inode_rcu() to get the actual inode. Signed-off-by: Kaixu Xia <kaixuxia@tencent.com> Reviewed-by: Lukas Czerner <lczerner@redhat.com> Link: https://lore.kernel.org/r/1602317416-1260-1-git-send-email-kaixuxia@tencent.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.