tree a03fcedb0198f00c02ace3814a3fe27772cf2dcf
parent 42c832debbbf819f6c4ad8601baa559c44105ba4
author Lukas Czerner <lczerner@redhat.com> 1372680759 -0400
committer Theodore Ts'o <tytso@mit.edu> 1372680759 -0400

ext4: only zero partial blocks in ext4_zero_partial_blocks()

Currently if we pass range into ext4_zero_partial_blocks() which covers
entire block we would attempt to zero it even though we should only zero
unaligned part of the block.

Fix this by checking whether the range covers the whole block skip
zeroing if so.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>