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When gfs2_create_inode() fails after creating a new inode, it uses the GIF_FREE_VFS_INODE and GIF_ALLOC_FAILED inode flags to communicate to gfs2_evict_inode() which parts of the inode need to be deallocated and destroyed. In some error cases, the inode ends up being allocated on disk and then accidentally left behind. In others, the inode is partially constructed and then not properly destroyed. Clean this up by completely handling the inode deallocation and destruction in gfs2_evict_inode(). This means that gfs2_evict_inode() may now be faced with partially constructed inodes, so add the necessary checks to cope with that. In particular, make sure that for incompletely constructed inodes, we're not accessing the buffers backing the on-disk blocks; the contents may be undefined. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
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.