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128d0fd1ab
Now that we've created the infrastructure to perform live scans of every file in the filesystem and the necessary hook infrastructure to observe live updates, use it to scan directories to compute the correct link counts for files in the filesystem, and reset those link counts. This patchset creates a tailored readdir implementation for scrub because the regular version has to cycle ILOCKs to copy information to userspace. We can't cycle the ILOCK during the nlink scan and we don't need all the other VFS support code (maintaining a readdir cursor and translating XFS structures to VFS structures and back) so it was easier to duplicate the code. This has been running on the djcloud for months with no problems. Enjoy! Signed-off-by: Darrick J. Wong <djwong@kernel.org> -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQQ2qTKExjcn+O1o2YRKO3ySh0YRpgUCZdlBYAAKCRBKO3ySh0YR pjJwAP49J6UgZUDQMX4rQ5q2TbyHLnyvUzeiQ/Cc8IqXau5VxwD/U3QNPii5uUMw jNid2AMba4AkXkskU6fr4do8UwmPSQ4= =Dva/ -----END PGP SIGNATURE----- Merge tag 'scrub-nlinks-6.9_2024-02-23' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into xfs-6.9-mergeC xfs: online repair of file link counts Now that we've created the infrastructure to perform live scans of every file in the filesystem and the necessary hook infrastructure to observe live updates, use it to scan directories to compute the correct link counts for files in the filesystem, and reset those link counts. This patchset creates a tailored readdir implementation for scrub because the regular version has to cycle ILOCKs to copy information to userspace. We can't cycle the ILOCK during the nlink scan and we don't need all the other VFS support code (maintaining a readdir cursor and translating XFS structures to VFS structures and back) so it was easier to duplicate the code. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Chandan Babu R <chandanbabu@kernel.org> * tag 'scrub-nlinks-6.9_2024-02-23' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux: xfs: teach repair to fix file nlinks xfs: track directory entry updates during live nlinks fsck xfs: teach scrub to check file nlinks xfs: report health of inode link counts |
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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.