50535db8fb
When inode defrag is canceled, the error is set to EAGAIN but then overwritten by number of defragmented bytes. As this would hide the error, rather return EAGAIN. This does not harm 'btrfs fi defrag', it will print the error and continue to next file (as it does in for any other error). Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Reviewed-by: David Sterba <dsterba@suse.com> [ update changelog ] Signed-off-by: David Sterba <dsterba@suse.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.