From: Mikulas Patocka Date: Sun, 27 Jul 2014 17:00:41 +0000 (-0400) Subject: fs: make cont_expand_zero interruptible X-Git-Tag: fixes-against-v3.18-rc2~105^2~34 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c2ca0fcd202863b14bd041a7fece2e789926c225;p=pandora-kernel.git fs: make cont_expand_zero interruptible This patch makes it possible to kill a process looping in cont_expand_zero. A process may spend a lot of time in this function, so it is desirable to be able to kill it. It happened to me that I wanted to copy a piece data from the disk to a file. By mistake, I used the "seek" parameter to dd instead of "skip". Due to the "seek" parameter, dd attempted to extend the file and became stuck doing so - the only possibility was to reset the machine or wait many hours until the filesystem runs out of space and cont_expand_zero fails. We need this patch to be able to terminate the process. Signed-off-by: Mikulas Patocka Cc: stable@vger.kernel.org Signed-off-by: Al Viro --- Reading git-diff-tree failed