tree 27415537e52ba2cfad0561fb16dca945efcfab36
parent 02fbd139759feb1f331cebd858523b5d774082e6
author Jan Kara <jack@suse.cz> 1463411824 +0200
committer Vishal Verma <vishal.l.verma@intel.com> 1463467284 -0600

ext2: Fix block zeroing in ext2_get_blocks() for DAX

When zeroing allocated blocks for DAX, we accidentally zeroed only the
first allocated block instead of all of them. So far this problem is
hidden by the fact that page faults always need only a single block and
DAX write code zeroes blocks again. But the zeroing in DAX code is racy
and needs to be removed so fix the zeroing in ext2 to zero all allocated
blocks.

Reported-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>