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The way we handle delalloc metadata reservations has gotten progressively more complicated over the years. There is so much cruft and weirdness around keeping the reserved count and outstanding counters consistent and handling the error cases that it's impossible to understand. Fix this by making the delalloc block rsv per-inode. This way we can calculate the actual size of the outstanding metadata reservations every time we make a change, and then reserve the delta based on that amount. This greatly simplifies the code everywhere, and makes the error handling in btrfs_delalloc_reserve_metadata far less terrifying. Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.