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Fallocating a file in btrfs goes through several stages. The one before actually inserting the fallocated extents is to create a qgroup reservation, covering the desired range. To this end there is a loop in btrfs_fallocate which checks to see if there are holes in the fallocated range or !PREALLOC extents past EOF and if so create qgroup reservations for them. Unfortunately, the main condition of the loop is burried right at the end of its body rather than in the actual while statement which makes it non-obvious. Fix this by moving the condition in the while statement where it belongs. No functional changes. Signed-off-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.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.