Keith Mannthey 08bafc0341 block: Supress Buffer I/O errors when SCSI REQ_QUIET flag set ... Allow the scsi request REQ_QUIET flag to be propagated to the buffer file system layer. The basic ideas is to pass the flag from the scsi request to the bio (block IO) and then to the buffer layer. The buffer layer can then suppress needless printks. This patch declutters the kernel log by removed the 40-50 (per lun) buffer io error messages seen during a boot in my multipath setup . It is a good chance any real errors will be missed in the "noise" it the logs without this patch. During boot I see blocks of messages like " __ratelimit: 211 callbacks suppressed Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242847 Buffer I/O error on device sdm, logical block 1 Buffer I/O error on device sdm, logical block 5242878 Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242872 " in my logs. My disk environment is multipath fiber channel using the SCSI_DH_RDAC code and multipathd. This topology includes an "active" and "ghost" path for each lun. IO's to the "ghost" path will never complete and the SCSI layer, via the scsi device handler rdac code, quick returns the IOs to theses paths and sets the REQ_QUIET scsi flag to suppress the scsi layer messages. I am wanting to extend the QUIET behavior to include the buffer file system layer to deal with these errors as well. I have been running this patch for a while now on several boxes without issue. A few runs of bonnie++ show no noticeable difference in performance in my setup. Thanks for John Stultz for the quiet_error finalization. Submitted-by: Keith Mannthey <kmannth@us.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>		2008-12-29 08:28:44 +01:00
..
9p	Merge branch 'next' into for-linus	2008-12-25 11:40:09 +11:00
adfs	vfs: Use const for kernel parser table	2008-10-13 10:10:37 -07:00
affs	CRED: Wrap task credential accesses in the AFFS filesystem	2008-11-14 10:38:45 +11:00
afs	fs: replace NIPQUAD()	2008-10-31 00:56:28 -07:00
autofs	CRED: Wrap task credential accesses in the autofs filesystem	2008-11-14 10:38:45 +11:00
autofs4	Merge branch 'master' into next	2008-11-14 11:29:12 +11:00
befs	befs: annotate fs32 on tests for superblock endianness	2008-10-16 11:21:46 -07:00
bfs	CRED: Wrap task credential accesses in the BFS filesystem	2008-11-14 10:38:47 +11:00
cifs	cifs: update for new IP4/6 address printing	2008-12-28 16:29:58 -08:00
coda	coda: fix creds reference	2008-11-20 08:11:52 +11:00
configfs	[PATCH] assorted path_lookup() -> kern_path() conversions	2008-10-23 05:12:52 -04:00
cramfs	cramfs: fix named-pipe handling	2008-08-20 15:40:32 -07:00
debugfs	integrity: special fs magic	2008-10-13 09:47:43 +11:00
devpts	CRED: Wrap task credential accesses in the devpts filesystem	2008-11-14 10:38:49 +11:00
dlm	fix warning in fs/dlm/netlink.c	2008-11-25 16:51:45 -08:00
ecryptfs	Merge branch 'master' into next	2008-12-04 17:16:36 +11:00
efs	[PATCH] switch all filesystems over to d_obtain_alias	2008-10-23 05:13:01 -04:00
exportfs	Merge branch 'next' into for-linus	2008-12-25 11:40:09 +11:00
ext2	CRED: Wrap task credential accesses in the Ext2 filesystem	2008-11-14 10:38:50 +11:00
ext3	Merge branch 'master' into next	2008-11-14 11:29:12 +11:00
ext4	Merge branch 'next' into for-linus	2008-12-25 11:40:09 +11:00
fat	Merge branch 'master' into next	2008-11-14 11:29:12 +11:00
freevxfs
fuse	CRED: Use RCU to access another task's creds and to release a task's own creds	2008-11-14 10:39:19 +11:00
gfs2	CRED: Wrap task credential accesses in the GFS2 filesystem	2008-11-14 10:38:53 +11:00
hfs	CRED: Wrap task credential accesses in the HFS filesystem	2008-11-14 10:38:54 +11:00
hfsplus	CRED: Wrap task credential accesses in the HFSplus filesystem	2008-11-14 10:38:54 +11:00
hostfs	hostfs: fix a duplicated global function name	2008-11-19 18:50:00 -08:00
hpfs	CRED: Wrap task credential accesses in the HPFS filesystem	2008-11-14 10:38:55 +11:00
hppfs	CRED: Use creds in file structs	2008-11-14 10:39:25 +11:00
hugetlbfs	CRED: Wrap current->cred and a few other accessors	2008-11-14 10:39:18 +11:00
isofs	[PATCH] switch all filesystems over to d_obtain_alias	2008-10-23 05:13:01 -04:00
jbd	jbd: don't give up looking for space so easily in __log_wait_for_space	2008-11-06 22:37:59 -05:00
jbd2	jbd2: don't give up looking for space so easily in __jbd2_log_wait_for_space	2008-11-06 22:38:07 -05:00
jffs2	Merge git://git.infradead.org/mtd-2.6	2008-11-06 15:43:13 -08:00
jfs	CRED: Wrap task credential accesses in the JFS filesystem	2008-11-14 10:38:56 +11:00
lockd	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2008-12-15 20:03:50 -08:00
minix	CRED: Wrap task credential accesses in the Minix filesystem	2008-11-14 10:38:57 +11:00
ncpfs	CRED: Wrap task credential accesses in the NCPFS filesystem	2008-11-14 10:38:58 +11:00
nfs	fs: replace NIPQUAD()	2008-10-31 00:56:28 -07:00
nfs_common
nfsd	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2008-12-28 12:49:40 -08:00
nls	remove CONFIG_KMOD from fs	2008-10-17 02:38:36 +11:00
ntfs	ntfs: don't fool kernel-doc	2008-12-01 19:55:25 -08:00
ocfs2	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2008-12-28 12:49:40 -08:00
omfs	CRED: Wrap task credential accesses in the OMFS filesystem	2008-11-14 10:38:59 +11:00
openpromfs	[PATCH] fix ->llseek for more directories	2008-10-23 05:13:21 -04:00
partitions	block/md: fix md autodetection	2008-11-18 15:08:56 +01:00
proc	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	2008-12-28 16:54:33 -08:00
qnx4
ramfs	CRED: Wrap task credential accesses in the RAMFS filesystem	2008-11-14 10:39:00 +11:00
reiserfs	CRED: Wrap task credential accesses in the ReiserFS filesystem	2008-11-14 10:39:01 +11:00
romfs	romfs_readpage: don't report errors for pages beyond i_size	2008-07-30 14:30:34 -07:00
smbfs	CRED: Wrap current->cred and a few other accessors	2008-11-14 10:39:18 +11:00
sysfs	[PATCH] fix ->llseek for more directories	2008-10-23 05:13:21 -04:00
sysv	CRED: Wrap task credential accesses in the SYSV filesystem	2008-11-14 10:39:02 +11:00
ubifs	Merge branch 'master' into next	2008-12-04 17:16:36 +11:00
udf	Merge branch 'master' into next	2008-12-04 17:16:36 +11:00
ufs	CRED: Wrap task credential accesses in the UFS filesystem	2008-11-14 10:39:04 +11:00
xfs	Merge branch 'next' into for-linus	2008-12-25 11:40:09 +11:00
aio.c
anon_inodes.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
attr.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
bad_inode.c
binfmt_aout.c	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
binfmt_elf.c	Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6	2008-12-28 12:33:21 -08:00
binfmt_elf_fdpic.c	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
binfmt_em86.c	Allow recursion in binfmt_script and binfmt_misc	2008-10-16 11:21:38 -07:00
binfmt_flat.c	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
binfmt_misc.c	Allow recursion in binfmt_script and binfmt_misc	2008-10-16 11:21:38 -07:00
binfmt_script.c	Allow recursion in binfmt_script and binfmt_misc	2008-10-16 11:21:38 -07:00
binfmt_som.c	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
bio-integrity.c	block: Introduce integrity data ownership flag	2008-10-09 08:56:21 +02:00
bio.c	blktrace: port to tracepoints, update	2008-11-26 13:04:35 +01:00
block_dev.c	[PATCH 1/2] kill FMODE_NDELAY_NOW	2008-12-04 04:22:57 -05:00
buffer.c	block: Supress Buffer I/O errors when SCSI REQ_QUIET flag set	2008-12-29 08:28:44 +01:00
char_dev.c	[PATCH] tidy up chrdev_open	2008-10-23 05:12:59 -04:00
compat.c	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
compat_binfmt_elf.c
compat_ioctl.c
dcache.c	[PATCH] fs: add a sanity check in d_free	2008-10-23 05:17:12 -04:00
dcookies.c
direct-io.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
dnotify.c
dquot.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
drop_caches.c
eventfd.c
eventpoll.c	epoll: introduce resource usage limits	2008-12-01 19:55:24 -08:00
exec.c	Merge branch 'next' into for-linus	2008-12-25 11:40:09 +11:00
fcntl.c	Merge branch 'next' into for-linus	2008-12-25 11:40:09 +11:00
fifo.c	[PATCH] introduce fmode_t, do annotations	2008-10-21 07:47:06 -04:00
file.c	[PATCH] merge locate_fd() and get_unused_fd()	2008-08-01 11:25:23 -04:00
file_table.c	CRED: Use creds in file structs	2008-11-14 10:39:25 +11:00
filesystems.c	proc: move /proc/filesystems to fs/filesystems.c	2008-10-23 14:27:09 +04:00
fs-writeback.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
generic_acl.c
inode.c	fs/inode.c: properly init address_space->writeback_index	2008-08-15 08:35:44 -07:00
inotify.c	inotify: fix IN_ONESHOT unmount event watcher	2008-12-10 08:01:53 -08:00
inotify_user.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
internal.h	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
ioctl.c	Fix a race condition in FASYNC handling	2008-12-05 15:35:10 -08:00
ioprio.c	CRED: Use RCU to access another task's creds and to release a task's own creds	2008-11-14 10:39:19 +11:00
Kconfig	[patch 1/3] FS_MBCACHE: don't needlessly make it built-in	2008-10-23 05:13:26 -04:00
Kconfig.binfmt	add CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS	2008-10-20 08:52:39 -07:00
libfs.c	fs: remove prepare_write/commit_write	2008-10-30 11:38:45 -07:00
locks.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
Makefile	fat: move fs/vfat/* and fs/msdos/* to fs/fat	2008-11-06 15:41:20 -08:00
mbcache.c
mpage.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
namei.c	Merge branch 'master' into next	2008-12-04 17:16:36 +11:00
namespace.c	Merge branch 'master' into next	2008-11-14 11:29:12 +11:00
nfsctl.c	nfsctl: add headers for credentials	2008-11-20 08:11:55 +11:00
no-block.c
open.c	CRED: Inaugurate COW credentials	2008-11-14 10:39:23 +11:00
pipe.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
pnode.c
pnode.h
posix_acl.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
quota.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
quota_v1.c
quota_v2.c
read_write.c	[PATCH] generic_file_llseek tidyups	2008-10-23 05:12:59 -04:00
read_write.h
readdir.c	[PATCH] prepare vfs_readdir() callers to returning filldir result	2008-10-23 05:13:10 -04:00
select.c	select: deal with math overflow from borderline valid userland data	2008-10-26 11:22:08 -07:00
seq_file.c	vfs, seqfile: export mangle_path() generally	2008-11-28 18:07:10 +01:00
signalfd.c
splice.c	fs: remove prepare_write/commit_write	2008-10-30 11:38:45 -07:00
stack.c
stat.c
super.c	security: pass mount flags to security_sb_kern_mount()	2008-12-20 09:02:39 +11:00
sync.c
timerfd.c	hrtimer: convert timerfd to the new hrtimer apis	2008-09-05 21:35:09 -07:00
utimes.c
xattr.c
xattr_acl.c