ext4: avoid kmemcheck complaint from reading uninitialized memory
authorTheodore Ts'o <tytso@mit.edu>
Mon, 6 Aug 2012 03:28:16 +0000 (23:28 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Mon, 6 Aug 2012 03:28:16 +0000 (23:28 -0400)
commit7e731bc9a12339f344cddf82166b82633d99dd86
tree1a9e6cee1227c1a6cbc4b172b789599a129d94d6
parentd796c52ef0b71a988364f6109aeb63d79c5b116b
ext4: avoid kmemcheck complaint from reading uninitialized memory

Commit 03179fe923 introduced a kmemcheck complaint in
ext4_da_get_block_prep() because we save and restore
ei->i_da_metadata_calc_last_lblock even though it is left
uninitialized in the case where i_da_metadata_calc_len is zero.

This doesn't hurt anything, but silencing the kmemcheck complaint
makes it easier for people to find real bugs.

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=45631
(which is marked as a regression).

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
fs/ext4/super.c