ext4: fix ext4_swap_extents() error handling
authorTheodore Ts'o <tytso@mit.edu>
Sun, 31 Aug 2014 19:03:14 +0000 (15:03 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Sun, 31 Aug 2014 19:03:14 +0000 (15:03 -0400)
commit19008f6dfa16d23afcd09dceaa598bb6da8de4b1
tree3c3a3cc20bf26de88d97062ccc5d6cdf0e26bacd
parentfcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a
ext4: fix ext4_swap_extents() error handling

If ext4_ext_find_extent() returns an error, we have to clear path1 or
path2 or else we would end up trying to free an ERR_PTR, which would
be bad.

Also eliminate some redundant code and mark the error paths as unlikely()

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
fs/ext4/extents.c