tree 1460ac391186be79beb79a6d4030cc387239681c
parent fdc1ca8abae72c5829e099fd35626b83ecb12666
author Miklos Szeredi <mszeredi@suse.cz> 1192602659 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1192635783 -0700

fuse: update backing_dev_info congestion state

Set the read and write congestion state if the request queue is close to
blocking, and clear it when it's not.

This prevents unnecessary blocking in readahead and (when writable mmaps are
allowed) writeback.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>