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majianpeng 895e3c5c58 md/raid5: For odirect-write performance, do not set STRIPE_PREREAD_ACTIVE. 
'sync' writes set both REQ_SYNC and REQ_NOIDLE.
O_DIRECT writes set REQ_SYNC but not REQ_NOIDLE.

We currently assume that a REQ_SYNC request will not be followed by
more requests and so set STRIPE_PREREAD_ACTIVE to expedite the
request.
This is appropriate for sync requests, but not for O_DIRECT requests.

So make the setting of STRIPE_PREREAD_ACTIVE conditional on REQ_NOIDLE
rather than REQ_SYNC.  This is consistent with the documented meaning
of REQ_NOIDLE:

        __REQ_NOIDLE,           /* don't anticipate more IO after this one */

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
2012-07-31 10:05:44 +10:00
..
persistent-data
dm persistent data: fix allocation failure in space map checker init
2012-07-03 12:55:37 +01:00
bitmap.c
md/bitmap: record the space available for the bitmap in the superblock.
2012-05-22 13:55:34 +10:00
bitmap.h
md/bitmap: record the space available for the bitmap in the superblock.
2012-05-22 13:55:34 +10:00
dm-bio-record.h
dm: preserve bi_io_vec when resubmitting bios
2009-04-02 19:55:23 +01:00
dm-bufio.c
dm bufio: prefetch
2012-03-28 18:41:29 +01:00
dm-bufio.h
dm bufio: prefetch
2012-03-28 18:41:29 +01:00
dm-crypt.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-delay.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-exception-store.c
dm exception store: fix init error path
2012-03-28 18:41:22 +01:00
dm-exception-store.h
dm snapshot: test chunk size against both origin and snapshot
2010-08-12 04:13:51 +01:00
dm-flakey.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-io.c
dm io: fix discard support
2012-03-07 19:09:37 +00:00
dm-ioctl.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-kcopyd.c
dm kcopyd: add dm_kcopyd_zero to zero an area
2011-10-31 20:18:58 +00:00
dm-linear.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-log-userspace-base.c
Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
2011-11-06 19:44:47 -08:00
dm-log-userspace-transfer.c
connector/userns: replace netlink uses of cap_raised() with capable()
2012-05-10 23:21:39 -04:00
dm-log-userspace-transfer.h
dm log: userspace add luid to distinguish between concurrent log instances
2009-09-04 20:40:34 +01:00
dm-log.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-mpath.c
dm mpath: allow ioctls to trigger pg init
2012-06-03 00:29:58 +01:00
dm-mpath.h
…
dm-path-selector.c
md: Add module.h to all files using it implicitly
2011-10-31 19:31:18 -04:00
dm-path-selector.h
dm mpath: add start_io and nr_bytes to path selectors
2009-06-22 10:12:27 +01:00
dm-queue-length.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-raid1.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-raid.c
DM RAID: Use md_error() in place of simply setting Faulty bit
2012-05-22 13:55:31 +10:00
dm-region-hash.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
dm-round-robin.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-service-time.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-snap-persistent.c
md: Add in export.h for files using EXPORT_SYMBOL
2011-10-31 19:31:19 -04:00
dm-snap-transient.c
md: Add in export.h for files using EXPORT_SYMBOL
2011-10-31 19:31:19 -04:00
dm-snap.c
dm snapshot: skip reading origin when overwriting complete chunk
2011-08-02 12:32:04 +01:00
dm-stripe.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-sysfs.c
Driver core: Constify struct sysfs_ops in struct kobj_type
2010-03-07 17:04:49 -08:00
dm-table.c
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm-target.c
dm: error return error for discards
2010-08-12 04:14:14 +01:00
dm-thin-metadata.c
dm thin: provide userspace access to pool metadata
2012-06-03 00:30:01 +01:00
dm-thin-metadata.h
dm thin: provide userspace access to pool metadata
2012-06-03 00:30:01 +01:00
dm-thin.c
dm thin: commit metadata before creating metadata snapshot
2012-07-03 12:55:31 +01:00
dm-uevent.c
md: Add in export.h for files using EXPORT_SYMBOL
2011-10-31 19:31:19 -04:00
dm-uevent.h
…
dm-verity.c
dm: add verity target
2012-03-28 18:43:38 +01:00
dm-zero.c
dm: zero silently drop discards
2010-08-12 04:14:12 +01:00
dm.c
dm: clear bi_end_io on remapping failure
2012-03-28 18:41:25 +01:00
dm.h
dm table: add immutable feature
2011-10-31 20:19:04 +00:00
faulty.c
md: tidy up rdev_for_each usage.
2012-03-19 12:46:39 +11:00
Kconfig
dm: add verity target
2012-03-28 18:43:38 +01:00
linear.c
md/linear: If md_integrity_register() fails, linear_run() must free the mem.
2012-04-02 09:48:37 +10:00
linear.h
md/linear: typedef removal: linear_conf_t -> struct linear_conf
2011-10-11 16:48:54 +11:00
Makefile
dm: add verity target
2012-03-28 18:43:38 +01:00
md.c
md: remove duplicated test on ->openers when calling do_md_stop()
2012-07-31 10:04:55 +10:00
md.h
md/bitmap: add new 'space' attribute for bitmaps.
2012-05-22 13:55:07 +10:00
multipath.c
md: make 'name' arg to md_register_thread non-optional.
2012-07-03 15:56:52 +10:00
multipath.h
md/multipath: typedef removal: multipath_conf_t -> struct mpconf
2011-10-11 16:48:57 +11:00
raid0.c
md: Avoid OOPS when reshaping raid1 to raid0
2012-04-03 15:37:26 +10:00
raid0.h
md: add proper merge_bvec handling to RAID0 and Linear.
2012-03-19 12:46:39 +11:00
raid1.c
md/raid1: don't abort a resync on the first badblock.
2012-07-31 10:05:34 +10:00
raid1.h
md/raid1: prevent merging too large request
2012-07-31 10:03:53 +10:00
raid5.c
md/raid5: For odirect-write performance, do not set STRIPE_PREREAD_ACTIVE.
2012-07-31 10:05:44 +10:00
raid5.h
raid5: Add R5_ReadNoMerge flag which prevent bio from merging at block layer
2012-07-31 10:04:21 +10:00
raid10.c
MD RAID10: Export md_raid10_congested
2012-07-31 10:03:53 +10:00
raid10.h
MD RAID10: Export md_raid10_congested
2012-07-31 10:03:53 +10:00