From 8a7cda772d34b96c45714160ce4ec3b0c0d5b29b Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Wed, 15 May 2013 12:30:07 -0400 Subject: mount/fuse: enable fuse real async dio when available fuse has support for optimized async. direct I/O handling via the FUSE_ASYNC_DIO init flag. Enable FUSE_ASYNC_DIO when advertised by fuse. performance/write-behind: fix dio hang Also fix a hang observed during aio-stress testing due to conflicting request handling in write-behind. Overlapping requests are skipped in pick_winds and may never continue when the conflicting write in progress returns. Add a wb_process_queue() call after a non-wb request completes to keep the queue moving. BUG: 963258 Change-Id: Ifba6e8aba7a7790b288a32067706b75f263105d4 Signed-off-by: Brian Foster Reviewed-on: http://review.gluster.org/5014 Reviewed-by: Anand Avati Tested-by: Gluster Build System --- contrib/fuse-include/fuse_kernel.h | 1 + 1 file changed, 1 insertion(+) (limited to 'contrib') diff --git a/contrib/fuse-include/fuse_kernel.h b/contrib/fuse-include/fuse_kernel.h index c6396555c52..0c3a11d54a7 100644 --- a/contrib/fuse-include/fuse_kernel.h +++ b/contrib/fuse-include/fuse_kernel.h @@ -162,6 +162,7 @@ struct fuse_file_lock { #define FUSE_BIG_WRITES (1 << 5) #define FUSE_DONT_MASK (1 << 6) #define FUSE_DO_READDIRPLUS (1 << 13) +#define FUSE_ASYNC_DIO (1 << 15) /** * CUSE INIT request/reply flags -- cgit