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1b430beee5
linux/fs
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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
..
9p
adfs Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
affs Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
afs writeback: remove nonblocking/encountered_congestion references 2010-10-26 16:52:05 -07:00
autofs Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
autofs4 Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
befs
bfs BKL: Remove BKL from BFS 2010-10-04 21:10:35 +02:00
btrfs Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
cachefiles llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
ceph writeback: remove nonblocking/encountered_congestion references 2010-10-26 16:52:05 -07:00
cifs writeback: remove nonblocking/encountered_congestion references 2010-10-26 16:52:05 -07:00
coda Coda: replace BKL with mutex 2010-10-25 08:02:40 -07:00
configfs
cramfs
debugfs llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
devpts
dlm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm 2010-10-22 17:33:16 -07:00
ecryptfs Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
efs
exofs exofs: Remove inode->i_count manipulation in exofs_new_inode 2010-10-25 18:03:07 +02:00
exportfs
ext2 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
ext3 Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
ext4 Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
fat Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
freevxfs BKL: remove BKL from freevxfs 2010-10-21 18:48:09 +02:00
fscache
fuse Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
gfs2 writeback: remove nonblocking/encountered_congestion references 2010-10-26 16:52:05 -07:00
hfs Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
hfsplus hfsplus: fix getxattr return value 2010-10-15 05:45:00 -07:00
hostfs hostfs: fix UML crash: remove f_spare from hostfs 2010-10-26 16:52:04 -07:00
hpfs Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
hppfs llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
hugetlbfs Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6 2010-10-26 10:13:10 -07:00
isofs BKL: Remove BKL from isofs 2010-10-04 21:10:45 +02:00
jbd Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
jbd2 Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
jffs2 BKL: Remove BKL from jffs2 2010-10-04 21:10:50 +02:00
jfs Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
lockd Merge branch 'for-2.6.37' of git://linux-nfs.org/~bfields/linux 2010-10-26 09:55:25 -07:00
logfs llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
minix
ncpfs ncpfs: Lock socket in ncpfs while setting its callbacks 2010-10-05 11:02:14 +02:00
nfs writeback: remove nonblocking/encountered_congestion references 2010-10-26 16:52:05 -07:00
nfs_common
nfsd Merge branch 'for-2.6.37' of git://linux-nfs.org/~bfields/linux 2010-10-26 09:55:25 -07:00
nilfs2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2 2010-10-23 01:26:47 -07:00
nls
notify Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
ntfs BKL: Remove BKL from NTFS 2010-10-04 21:10:41 +02:00
ocfs2 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
omfs
openpromfs
partitions Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2010-10-25 07:45:10 -07:00
proc oom: fix locking for oom_adj and oom_score_adj 2010-10-26 16:52:05 -07:00
qnx4 BKL: remove BKL from qnx4 2010-10-21 18:48:04 +02:00
quota
ramfs
reiserfs writeback: remove nonblocking/encountered_congestion references 2010-10-26 16:52:05 -07:00
romfs llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
smbfs Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
squashfs Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
sysfs Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2010-10-22 19:36:42 -07:00
sysv
ubifs Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6 2010-10-22 16:34:03 -07:00
udf Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
ufs Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
xfs writeback: remove nonblocking/encountered_congestion references 2010-10-26 16:52:05 -07:00
aio.c aio: do not return ERESTARTSYS as a result of AIO 2010-09-22 17:22:39 -07:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c Don't dump task struct in a.out core-dumps 2010-10-14 10:57:40 -07:00
binfmt_elf_fdpic.c
binfmt_elf.c ARM: 6342/1: fix ASLR of PIE executables 2010-10-08 10:02:53 +01:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
binfmt_script.c
binfmt_som.c
bio-integrity.c
bio.c
block_dev.c
buffer.c writeback: remove nonblocking/encountered_congestion references 2010-10-26 16:52:05 -07:00
char_dev.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
compat_binfmt_elf.c
compat_ioctl.c fix rawctl compat ioctls breakage on amd64 and itanic 2010-10-19 11:29:54 +02:00
compat.c Merge branch 'for-2.6.37' of git://linux-nfs.org/~bfields/linux 2010-10-26 09:55:25 -07:00
dcache.c
dcookies.c
direct-io.c
drop_caches.c
eventfd.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
eventpoll.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
exec.c oom: add per-mm oom disable count 2010-10-26 16:52:05 -07:00
fcntl.c
fifo.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
file_table.c
file.c
filesystems.c
fs_struct.c
fs-writeback.c writeback: always use sb->s_bdi for writeback purposes 2010-10-04 14:25:33 +02:00
generic_acl.c
inode.c
internal.h
ioctl.c
ioprio.c
Kconfig BKL: introduce CONFIG_BKL. 2010-10-21 15:44:13 +02:00
Kconfig.binfmt
libfs.c
locks.c fs/locks.c: prepare for BKL removal 2010-10-05 11:02:04 +02:00
Makefile nfsd: allow deprecated interface to be compiled out. 2010-09-22 15:33:14 -04:00
mbcache.c
mpage.c
namei.c
namespace.c BKL: Remove BKL from do_new_mount() 2010-10-04 21:10:43 +02:00
nfsctl.c
no-block.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
open.c
pipe.c pipe: fix failure to return error code on ->confirm() 2010-10-21 14:56:33 +02:00
pnode.c
pnode.h
posix_acl.c
read_write.c vfs: make no_llseek the default 2010-10-15 15:53:46 +02:00
read_write.h
readdir.c
select.c
seq_file.c fs/seq_file.c: Remove unnecessary casts of private_data 2010-09-23 13:28:23 +02:00
signalfd.c Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6 2010-10-26 10:13:10 -07:00
splice.c
stack.c
stat.c
statfs.c
super.c
sync.c
timerfd.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
utimes.c
xattr_acl.c
xattr.c