tree 83b39db8270050a9adfbd58fa5b0fd2e976721da
parent 60fc93599cf150ee1ed7e943298971de17be1866
author Mimi Zohar <zohar@linux.vnet.ibm.com> 1506519254 -0400
committer Mimi Zohar <zohar@linux.vnet.ibm.com> 1506584655 -0400

fs: detect that the i_rwsem has already been taken exclusively

Don't attempt to take the i_rwsem, if it has already been taken
exclusively.

Signed-off-by:  Mimi Zohar <zohar@linux.vnet.ibm.com>