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Date: Sun, 8 Aug 2010 06:47:02 -0400
From: Jens Axboe <jaxboe@...ionio.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] (cleaned up) block/IO bits for 2.6.36-rc1
Hi Linus,
Lets try this again. I based it off v2.6.35 and did the manual work
required to get it to apply. The main issue was the ordering around
the xen-blkfront and the block BKL removal patches. And I also dropped
a patch that could be folded into another one.
I did a test pull of this into your current HEAD, and there are two
conflicts that need to be resolved. Below the diffstat is the patch you
should use to fix that up.
git://git.kernel.dk/linux-2.6-block.git for-2.6.36
I've been running this on the laptop since yesterday. I'll push it to
linux-next now and do some runs on the test box at home and then I'll
ask you to pull it.
Andi Kleen (2):
gcc-4.6: block: fix unused but set variables in blk-merge
gcc-4.6: fs: fix unused but set warnings
Arnd Bergmann (8):
scsi/i2o_block: cleanup ioctl handling
block: push down BKL into .locked_ioctl
block: push down BKL into .open and .release
block: push BKL into blktrace ioctls
block: remove BKL from BLKROSET and BLKFLSBUF
block: remove BKL from partition ioctls
scsi/sd: remove big kernel lock
scsi/i2o: restore ioctl changes
Artem Bityutskiy (15):
writeback: harmonize writeback threads naming
writeback: fix possible race when creating bdi threads
writeback: do not lose wake-ups in the forker thread - 1
writeback: do not lose wake-ups in the forker thread - 2
writeback: do not lose wake-ups in bdi threads
writeback: simplify bdi code a little
writeback: do not remove bdi from bdi_list
writeback: move last_active to bdi
writeback: restructure bdi forker loop a little
writeback: move bdi threads exiting logic to the forker thread
writeback: prevent unnecessary bdi threads wakeups
writeback: optimize periodic bdi thread wakeups
writeback: remove unnecessary init_timer call
writeback: add new tracepoints
writeback: cleanup bdi_register
Christoph Hellwig (7):
block: BARRIER request should imply SYNC
block: remove wrappers for request type/flags
block: unify flags for struct bio and struct request
block: fix some more cmd_type cleanup fallout
writeback: remove wb_list
writeback: merge bdi_writeback_task and bdi_start_fn
block: don't allocate a payload for discard request
Daniel Stodden (11):
xenbus: Make xenbus_switch_state transactional
blkfront: Fix backtrace in del_gendisk
blkfront: Fix gendisk leak
blkfront: Clean up vbd release
blkfront: Lock blkfront_info when closing
blkfront: Fix blkfront backend switch race (bdev open)
blkfront: Fix blkfront backend switch race (bdev release)
blkfront: Lock blockfront_info during xbdev removal
blkfront: Remove obsolete info->users
blkfront: Remove obsolete info->users
blkfront: Klog the unclean release path
Dave Chinner (4):
writeback: Initial tracing support
writeback: Add tracing to balance_dirty_pages
writeback: Add tracing to write_cache_pages
blkdev: check for valid request queue before issuing flush
FUJITA Tomonori (21):
aha1532: remove ISA_DMA_THRESHOLD usage
block: kill ISA_DMA_THRESHOLD usage
remove needless ISA_DMA_THRESHOLD
scsi: add sd_unprep_fn to free discard page
scsi: remove unused free discard page in sd_done
block: introduce REQ_FLUSH flag
block: permit PREFLUSH and POSTFLUSH without prepare_flush_fn
scsi: stop using q->prepare_flush_fn
osdblk: stop using q->prepare_flush_fn
ps3disk: stop using q->prepare_flush_fn
dm: stop using q->prepare_flush_fn
virtio_blk: stop using q->prepare_flush_fn
ide: stop using q->prepare_flush_fn
block: remove q->prepare_flush_fn completely
scsi: need to reset unprep_rq_fn in sd_remove
block: remove unused REQ_TYPE_LINUX_BLOCK
scsi: fix discard page leak
scsi: convert discard to REQ_TYPE_FS from REQ_TYPE_BLOCK_PC
block: set REQ_TYPE_FS on flush requests
block: set up rq->rq_disk properly for flush requests
scsi: use REQ_TYPE_FS for flush request
Ian Campbell (1):
xen: use less generic names in blkfront driver.
James Bottomley (1):
block: implement an unprep function corresponding directly to prep
Jan Beulich (2):
blkfront: fixes for 'xm block-detach ... --force'
blkfront: don't access freed struct xenbus_device
Jens Axboe (8):
block: add sysfs knob for turning off disk entropy contributions
block: add helpers for the trivial queue flag sysfs show/store entries
virtio_blk: add default case to cmd type switch
block: fixup missing conversion from BIO_RW_DISCARD to REQ_DISCARD
block: fix problem with sending down discard that isn't of correct granularity
coda: fixup clash with block layer REQ_* defines
writeback: fix bad _bh spinlock nesting
block: fix missing export of blk_types.h
Jeremy Fitzhardinge (3):
xen/blkfront: avoid compiler warning from missing cases
xen/blkfront: use tagged queuing for barriers
xen/blkfront: Use QUEUE_ORDERED_DRAIN for old backends
Joe Perches (1):
drivers/cdrom: use pr_<level>
Julia Lawall (1):
drivers/block: use memdup_user
K. Y. Srinivasan (2):
xen/front: Propagate changed size of VBDs
xen/blkfront: revalidate after setting capacity
Kulikov Vasiliy (1):
cpqarray: check put_user() result
Lars Ellenberg (1):
drbd: revert "delay probes", feature is being re-implemented differently
Mike Miller (11):
cciss: enqueue and submit io
cciss: clean up interrupt handler
cciss: check for msi in interrupt_not_for_us
cciss: make interrupt access methods return type bool
cciss: add performant mode support for Stars/Sirius
cciss: new controller support and bump driver version
cciss: make sure we request the performant mode irq
cciss: fix call to put_controller_in_performant_mode
cciss: move next_command function from ifdef
cciss: remove errant debug code
cciss: change pad value from 32 to 0
Mike Snitzer (1):
block: disallow FS recursion from sb_issue_discard allocation
Miklos Szeredi (1):
splice: fix misuse of SPLICE_F_NONBLOCK
Minchan Kim (1):
writeback: remove wb in get_next_work_item
Philipp Reisner (2):
drbd: Disable delay probes for the upcomming release
drbd: Initialize all members of sync_conf to their defaults [Bugz 315]
Randy Dunlap (2):
block/xd.c: fix brace typo
writeback.h: needs linux/device.h
Stephen Hemminger (9):
floppy: initialize debug jiffies offset
floppy: remove unnecessary inlines
floppy: silence warning during disk test
floppy: use atomic type for usage_count
floppy: cmos attribute should be static
floppy: fix signed/unsigned warnings
floppy: use wait_event_interruptible
floppy: use warning macros
floppy: make controller const
Stephen M. Cameron (26):
cciss: Set the performant mode bit in the scsi half of the driver
cciss: save pdev pointer in per hba structure early to avoid passing it around so much.
cciss: factor out cciss_lookup_board_id
cciss: factor out cciss_board_disabled
cciss: remove board_id parameter from cciss_interrupt_mode()
cciss: factor out cciss_find_memory_BAR()
cciss: factor out cciss_wait_for_board_ready()
cciss: factor out cciss_find_cfgtables
cciss: fix leak of ioremapped memory
cciss: factor out cciss_find_board_params
cciss: factor out CISS_signature_present()
cciss: factor out cciss_enable_scsi_prefetch()
cciss: factor out cciss_p600_dma_prefetch_quirk()
cciss: cleanup some debug ifdefs
cciss: make cciss_put_controller_into_performant_mode as __devinit
cciss: factor out cciss_wait_for_mode_change_ack()
cciss: factor out cciss_enter_performant_mode
cciss: factor out cciss_find_cfg_addrs.
cciss: factor out cciss_reset_devices()
cciss: fix hard reset code.
cciss: sanitize max commands
cciss: forbid hard reset of 640x boards
cciss: use consistent variable names
cciss: separate cmd_alloc() and cmd_special_alloc()
cciss: change printks to dev_warn, etc.
cciss: cleanup interrupt_not_for_us
Stephen Rothwell (1):
block: fix for block tracing build error
Tejun Heo (2):
bio, fs: update RWA_MASK, READA and SWRITE to match the corresponding BIO_RW_* bits
bio, fs: separate out bio_types.h and define READ/WRITE constants in terms of BIO_RW_* flags
arch/alpha/include/asm/scatterlist.h | 2 -
arch/avr32/include/asm/scatterlist.h | 2 -
arch/blackfin/include/asm/scatterlist.h | 2 -
arch/cris/include/asm/scatterlist.h | 2 -
arch/frv/include/asm/scatterlist.h | 2 -
arch/h8300/include/asm/scatterlist.h | 2 -
arch/ia64/include/asm/scatterlist.h | 9 -
arch/m32r/include/asm/scatterlist.h | 2 -
arch/m68k/include/asm/scatterlist.h | 3 -
arch/microblaze/include/asm/scatterlist.h | 2 -
arch/mips/include/asm/scatterlist.h | 2 -
arch/mn10300/include/asm/scatterlist.h | 2 -
arch/parisc/include/asm/scatterlist.h | 1 -
arch/powerpc/include/asm/scatterlist.h | 3 -
arch/s390/include/asm/scatterlist.h | 2 -
arch/score/include/asm/scatterlist.h | 2 -
arch/sh/include/asm/scatterlist.h | 2 -
arch/sparc/include/asm/scatterlist.h | 1 -
arch/um/drivers/ubd_kern.c | 7 +-
arch/x86/include/asm/scatterlist.h | 1 -
arch/xtensa/include/asm/scatterlist.h | 2 -
block/blk-barrier.c | 35 +-
block/blk-core.c | 112 +-
block/blk-exec.c | 2 +-
block/blk-lib.c | 48 +-
block/blk-map.c | 2 +-
block/blk-merge.c | 9 +-
block/blk-settings.c | 17 +
block/blk-sysfs.c | 82 +-
block/blk.h | 6 +-
block/cfq-iosched.c | 21 +-
block/compat_ioctl.c | 56 -
block/elevator.c | 19 +-
block/ioctl.c | 21 +-
drivers/ata/libata-scsi.c | 4 +-
drivers/block/DAC960.c | 13 +-
drivers/block/amiflop.c | 29 +-
drivers/block/aoe/aoeblk.c | 6 +-
drivers/block/ataflop.c | 32 +-
drivers/block/brd.c | 9 +-
drivers/block/cciss.c | 2165 +++++++++++++++++------------
drivers/block/cciss.h | 135 ++-
drivers/block/cciss_cmd.h | 36 +-
drivers/block/cciss_scsi.c | 670 +++++-----
drivers/block/cpqarray.c | 78 +-
drivers/block/drbd/drbd_actlog.c | 8 +-
drivers/block/drbd/drbd_int.h | 16 +-
drivers/block/drbd/drbd_main.c | 102 +--
drivers/block/drbd/drbd_nl.c | 4 -
drivers/block/drbd/drbd_proc.c | 19 +-
drivers/block/drbd/drbd_receiver.c | 135 +--
drivers/block/drbd/drbd_req.c | 2 +-
drivers/block/drbd/drbd_worker.c | 15 +-
drivers/block/floppy.c | 182 +--
drivers/block/hd.c | 2 +-
drivers/block/loop.c | 9 +-
drivers/block/mg_disk.c | 4 +-
drivers/block/nbd.c | 7 +-
drivers/block/osdblk.c | 15 +-
drivers/block/paride/pcd.c | 21 +-
drivers/block/paride/pd.c | 11 +-
drivers/block/paride/pf.c | 26 +-
drivers/block/pktcdvd.c | 20 +-
drivers/block/ps3disk.c | 25 +-
drivers/block/swim.c | 20 +-
drivers/block/swim3.c | 32 +-
drivers/block/ub.c | 35 +-
drivers/block/umem.c | 2 +-
drivers/block/viodasd.c | 21 +-
drivers/block/virtio_blk.c | 86 +-
drivers/block/xd.c | 19 +-
drivers/block/xen-blkfront.c | 402 ++++--
drivers/block/xsysace.c | 8 +-
drivers/block/z2ram.c | 13 +-
drivers/cdrom/cdrom.c | 46 +-
drivers/cdrom/gdrom.c | 48 +-
drivers/cdrom/viocd.c | 106 +-
drivers/ide/ide-atapi.c | 17 +-
drivers/ide/ide-cd.c | 98 +-
drivers/ide/ide-cd_ioctl.c | 2 +-
drivers/ide/ide-disk.c | 18 +-
drivers/ide/ide-disk_ioctl.c | 9 +-
drivers/ide/ide-eh.c | 5 +-
drivers/ide/ide-floppy.c | 27 +-
drivers/ide/ide-floppy_ioctl.c | 12 +-
drivers/ide/ide-gd.c | 19 +-
drivers/ide/ide-io.c | 8 +-
drivers/ide/ide-pm.c | 8 +-
drivers/ide/ide-tape.c | 22 +-
drivers/md/dm-io.c | 12 +-
drivers/md/dm-kcopyd.c | 2 +-
drivers/md/dm-raid1.c | 2 +-
drivers/md/dm-stripe.c | 2 +-
drivers/md/dm.c | 47 +-
drivers/md/linear.c | 2 +-
drivers/md/md.c | 16 +-
drivers/md/md.h | 4 +-
drivers/md/multipath.c | 8 +-
drivers/md/raid0.c | 2 +-
drivers/md/raid1.c | 22 +-
drivers/md/raid10.c | 12 +-
drivers/md/raid5.c | 2 +-
drivers/memstick/core/mspro_block.c | 12 +-
drivers/message/i2o/i2o_block.c | 30 +-
drivers/mmc/card/block.c | 5 +
drivers/mmc/card/queue.c | 4 +-
drivers/mtd/mtd_blkdevs.c | 15 +-
drivers/s390/block/dasd.c | 8 +-
drivers/s390/block/dcssblk.c | 5 +
drivers/s390/char/tape_block.c | 8 +-
drivers/scsi/aha1542.c | 25 -
drivers/scsi/osd/osd_initiator.c | 8 +-
drivers/scsi/scsi_error.c | 25 +-
drivers/scsi/scsi_lib.c | 14 +-
drivers/scsi/sd.c | 126 ++-
drivers/scsi/sd.h | 2 +-
drivers/scsi/sr.c | 25 +-
drivers/scsi/sun3_NCR5380.c | 2 +-
drivers/scsi/sun3_scsi.c | 2 +-
drivers/scsi/sun3_scsi_vme.c | 2 +-
drivers/staging/hv/blkvsc_drv.c | 13 +-
drivers/xen/xenbus/xenbus_client.c | 90 +-
fs/bio.c | 5 +-
fs/block_dev.c | 10 +-
fs/btrfs/disk-io.c | 8 +-
fs/btrfs/inode.c | 6 +-
fs/btrfs/volumes.c | 18 +-
fs/coda/psdev.c | 12 +-
fs/coda/upcall.c | 12 +-
fs/exofs/ios.c | 2 +-
fs/fs-writeback.c | 161 ++-
fs/gfs2/log.c | 4 +-
fs/gfs2/meta_io.c | 8 +-
fs/gfs2/ops_fstype.c | 2 +-
fs/nilfs2/segbuf.c | 2 +-
fs/splice.c | 14 +-
include/linux/Kbuild | 1 +
include/linux/audit.h | 2 +-
include/linux/backing-dev.h | 23 +-
include/linux/bio.h | 158 +--
include/linux/blk_types.h | 193 +++
include/linux/blkdev.h | 142 +--
include/linux/blktrace_api.h | 18 +-
include/linux/coda_psdev.h | 8 +-
include/linux/drbd.h | 2 +-
include/linux/drbd_nl.h | 9 +-
include/linux/fs.h | 45 +-
include/trace/events/block.h | 15 +-
include/trace/events/writeback.h | 159 +++
kernel/power/block_io.c | 2 +-
kernel/trace/blktrace.c | 80 +-
mm/backing-dev.c | 446 +++----
mm/page-writeback.c | 5 +
mm/page_io.c | 2 +-
154 files changed, 4272 insertions(+), 3222 deletions(-)
create mode 100644 include/linux/blk_types.h
create mode 100644 include/trace/events/writeback.h
diff --cc drivers/block/virtio_blk.c
index 23b7c48,7b0f7b6..0000000
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@@ -377,32 -377,11 +388,31 @@@ static int __devinit virtblk_probe(stru
vblk->disk->driverfs_dev = &vdev->dev;
index++;
- /* If barriers are supported, tell block layer that queue is ordered */
- if (virtio_has_feature(vdev, VIRTIO_BLK_F_FLUSH))
+ if (virtio_has_feature(vdev, VIRTIO_BLK_F_FLUSH)) {
+ /*
+ * If the FLUSH feature is supported we do have support for
+ * flushing a volatile write cache on the host. Use that
+ * to implement write barrier support.
+ */
- blk_queue_ordered(q, QUEUE_ORDERED_DRAIN_FLUSH,
- virtblk_prepare_flush);
+ blk_queue_ordered(q, QUEUE_ORDERED_DRAIN_FLUSH);
- else if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER))
+ } else if (virtio_has_feature(vdev, VIRTIO_BLK_F_BARRIER)) {
+ /*
+ * If the BARRIER feature is supported the host expects us
+ * to order request by tags. This implies there is not
+ * volatile write cache on the host, and that the host
+ * never re-orders outstanding I/O. This feature is not
+ * useful for real life scenarious and deprecated.
+ */
- blk_queue_ordered(q, QUEUE_ORDERED_TAG, NULL);
+ blk_queue_ordered(q, QUEUE_ORDERED_TAG);
+ } else {
+ /*
+ * If the FLUSH feature is not supported we must assume that
+ * the host does not perform any kind of volatile write
+ * caching. We still need to drain the queue to provider
+ * proper barrier semantics.
+ */
- blk_queue_ordered(q, QUEUE_ORDERED_DRAIN, NULL);
++ blk_queue_ordered(q, QUEUE_ORDERED_DRAIN);
+ }
/* If disk is read-only in the host, the guest should obey */
if (virtio_has_feature(vdev, VIRTIO_BLK_F_RO))
diff --cc drivers/scsi/scsi_error.c
index 2bf9846,2768bf6..0000000
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@@ -307,33 -307,7 +307,33 @@@ static int scsi_check_sense(struct scsi
(sshdr.asc == 0x04) && (sshdr.ascq == 0x02))
return FAILED;
- return NEEDS_RETRY;
+ if (sshdr.asc == 0x3f && sshdr.ascq == 0x0e)
+ scmd_printk(KERN_WARNING, scmd,
+ "Warning! Received an indication that the "
+ "LUN assignments on this target have "
+ "changed. The Linux SCSI layer does not "
+ "automatically remap LUN assignments.\n");
+ else if (sshdr.asc == 0x3f)
+ scmd_printk(KERN_WARNING, scmd,
+ "Warning! Received an indication that the "
+ "operating parameters on this target have "
+ "changed. The Linux SCSI layer does not "
+ "automatically adjust these parameters.\n");
+
- if (blk_barrier_rq(scmd->request))
++ if (scmd->request->cmd_flags & REQ_HARDBARRIER)
+ /*
+ * barrier requests should always retry on UA
+ * otherwise block will get a spurious error
+ */
+ return NEEDS_RETRY;
+ else
+ /*
+ * for normal (non barrier) commands, pass the
+ * UA upwards for a determination in the
+ * completion functions
+ */
+ return SUCCESS;
+
/* these three are not supported */
case COPY_ABORTED:
case VOLUME_OVERFLOW:
--
Jens Axboe
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