tree cd7619af62a9b5420e84fbfe4077a6b1395dfbaf
parent 691c6fd2a2d6b6db08b17beec5e42ab0687058c7
author Russ W. Knize <russ@knizefamily.net> 1380033340 -0500
committer Jaegeuk Kim <jaegeuk.kim@samsung.com> 1380098952 +0900

f2fs: don't let the orphan inode counter underflow

Accounting errors from buggy code calling the acquire/release/remove
orphan inode interfaces can cause n_orphans to underflow, which will
then cause acquire_orphan_inode() to return -ENOSPC on the next
operation.  This commit guards against that condition.

Signed-off-by: Russ Knize <rknize@motorola.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>