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Currently, the BTRFS_INODE_NOCOMPRESS will prevent any compression on a given file, except when the mount is force-compress. As users have reported on IRC, this will also prevent compression when requested by defrag (btrfs fi defrag -c file). The nocompress flag is set automatically by filesystem when the ratios are bad and the user would have to manually drop the bit in order to make defrag -c work. This is not good from the usability perspective. This patch will raise priority for the defrag -c over nocompress, ie. any file with NOCOMPRESS bit set will get defragmented. The bit will remain untouched. Alternate option was to also drop the nocompress bit and keep the decision logic as is, but I think this is not the right solution. Signed-off-by: David Sterba <dsterba@suse.com> |
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| README | ||
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.