Wu Fengguang 1b430beee5 writeback: remove nonblocking/encountered_congestion references ... This removes more dead code that was somehow missed by commit 0d99519efe (writeback: remove unused nonblocking and congestion checks). There are no behavior change except for the removal of two entries from one of the ext4 tracing interface. The nonblocking checks in ->writepages are no longer used because the flusher now prefer to block on get_request_wait() than to skip inodes on IO congestion. The latter will lead to more seeky IO. The nonblocking checks in ->writepage are no longer used because it's redundant with the WB_SYNC_NONE check. We no long set ->nonblocking in VM page out and page migration, because a) it's effectively redundant with WB_SYNC_NONE in current code b) it's old semantic of "Don't get stuck on request queues" is mis-behavior: that would skip some dirty inodes on congestion and page out others, which is unfair in terms of LRU age. Inspired by Christoph Hellwig. Thanks! Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: David Howells <dhowells@redhat.com> Cc: Sage Weil <sage@newdream.net> Cc: Steve French <sfrench@samba.org> Cc: Chris Mason <chris.mason@oracle.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2010-10-26 16:52:05 -07:00
..
events	writeback: remove nonblocking/encountered_congestion references	2010-10-26 16:52:05 -07:00
define_trace.h	tracing: Fix tracepoint.h DECLARE_TRACE() to allow more than one header	2010-05-05 11:46:17 -04:00
ftrace.h	tracing: Drop cpparg() macro	2010-08-02 01:31:28 +02:00
syscall.h	tracing: Use a global field list for all syscall exit events	2010-06-28 17:12:44 -04:00