linux-sg2042/fs/ceph
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
..
Kconfig ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
Makefile ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
addr.c writeback: remove nonblocking/encountered_congestion references 2010-10-26 16:52:05 -07:00
caps.c ceph: use mapping->nrpages to determine if mapping is empty 2010-10-20 15:38:15 -07:00
ceph_frag.c ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
debugfs.c ceph: fix debugfs warnings 2010-10-20 15:38:21 -07:00
dir.c ceph: do not carry i_lock for readdir from dcache 2010-10-20 15:38:27 -07:00
export.c ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
file.c ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
inode.c ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
ioctl.c ceph: add CEPH_MDS_OP_SETDIRLAYOUT and associated ioctl. 2010-10-20 15:38:23 -07:00
ioctl.h ceph: add CEPH_MDS_OP_SETDIRLAYOUT and associated ioctl. 2010-10-20 15:38:23 -07:00
locks.c ceph: preallocate flock state without locks held 2010-10-20 15:38:17 -07:00
mds_client.c ceph: switch from BKL to lock_flocks() 2010-10-20 15:38:18 -07:00
mds_client.h ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
mdsmap.c ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
snap.c ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
strings.c ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
super.c ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
super.h ceph: do not carry i_lock for readdir from dcache 2010-10-20 15:38:27 -07:00
xattr.c fs/ceph/xattr.c: Use kmemdup 2010-10-20 15:38:26 -07:00