ocfs2: error handling for ocfs2_setup_io_locks()

in case of no-memory, ocfs2_buffer_lock_ctxt_insert may returns -ENOMEM; then there may leave an unexpected up_read() on mm->mmap_sem.

this patch fixes that problem.

this patch is based on 1.2 svn.
since this code is removed in kernel mainline source, no patch for mainline.

Signed-off-by Wenwen Wang <[email protected]>

---
 mmap.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

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