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55edcd1f86
Split this function into two pieces -- one to make the actual changes to the inode core to add the attr fork, and another one to deal with getting the transaction and locking the inodes. The next couple of patches will need this to be split into two. One patch implements committing new parent pointer recordsets to damaged files. If one file has an attr fork and the other does not, we have to create the missing attr fork before the atomic swap transaction, and can use the behavior encoded in the current xfs_bmap_add_attrfork. The second patch adapts /lost+found adoptions to handle parent pointers correctly. The adoption process will add a parent pointer to a child that is being moved to /lost+found, but this requires that the attr fork already exists. We don't know if we're actually going to commit the adoption until we've already reserved a transaction and taken the ILOCKs, which means that we must have a way to bypass the start of the current xfs_bmap_add_attrfork. Therefore, create xfs_attr_add_fork as the helper that creates a transaction and takes locks; and make xfs_bmap_add_attrfork the function that updates the inode core and allocates the incore attr fork. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> |
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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 reStructuredText 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.