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(parent: 79f1ba4) | patch
ext4: Avoid underflow in ext4_trim_fs()
authorLukas Czerner <lczerner@redhat.com>
Mon, 22 Oct 2012 22:01:19 +0000 (18:01 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Mon, 22 Oct 2012 22:01:19 +0000 (18:01 -0400)
commit5de35e8d5c02d271c20e18337e01bc20e6ef472e
tree76650de85ba0c02a48de9daa1ba316b5108450f0tree | snapshot (tar.gz zip)
parent79f1ba49569e5aec919b653c55b03274c2331701commit | diff
ext4: Avoid underflow in ext4_trim_fs()

Currently if len argument in ext4_trim_fs() is smaller than one block,
the 'end' variable underflow. Avoid that by returning EINVAL if len is
smaller than file system block.

Also remove useless unlikely().

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
fs/ext4/mballoc.c diff | blob | blame | history