tree eff612a5bd8832bb002d3adde66a9b6c5a475f6d
parent 03a07c92a9ed9938d828ca7f1d11b8bc63a7bb89
author Goldwyn Rodrigues <rgoldwyn@suse.com> 1497960347 -0500
committer Jens Axboe <axboe@kernel.dk> 1497964323 -0600

ext4: nowait aio support

Return EAGAIN if any of the following checks fail for direct I/O:
  + i_rwsem is lockable
  + Writing beyond end of file (will trigger allocation)
  + Blocks are not allocated at the write location

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>