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Date: Sat, 3 Jul 2010 23:47:14 +0200 From: Arnd Bergmann <arnd@...db.de> To: Jens Axboe <axboe@...nel.dk> Cc: Christoph Hellwig <hch@...radead.org>, linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, John Kacur <jkacur@...hat.com>, Frederic Weisbecker <fweisbec@...il.com>, linux-scsi@...r.kernel.org, Arnd Bergmann <arnd@...db.de> Subject: [PATCH 0/6] block: BKL removal, version 3 This series removes the big kernel lock from the common block layer code by pushing it into the individual device drivers. Following a suggestion from Christoph Hellwig, It replaces the earlier attempt that converted the usage of the BKL into a subsystem-wide mutex. I'd like to get this into 2.6.36 in order to remove the BKL from all the core kernel code. The first larger patches should be fairly uncontroversial, while patch 5/6 is the most critical one. I could not see any reason why it should not work, but I'm also not convinced that I found all the possible problems in it, so I'd really like to get a second opinion on that one. Arnd Bergmann (6): 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 code scsi/sd: remove big kernel lock arch/um/drivers/ubd_kern.c | 7 ++++- block/compat_ioctl.c | 56 ----------------------------------- block/ioctl.c | 21 +------------ drivers/block/DAC960.c | 13 +++++-- drivers/block/amiflop.c | 27 +++++++++++++++-- drivers/block/aoe/aoeblk.c | 4 ++ drivers/block/ataflop.c | 28 ++++++++++++++++- drivers/block/brd.c | 5 ++- drivers/block/cciss.c | 31 +++++++++++++++---- drivers/block/cpqarray.c | 40 ++++++++++++++++++++++--- drivers/block/drbd/drbd_main.c | 4 ++ drivers/block/floppy.c | 20 ++++++++++++- drivers/block/loop.c | 5 +++ drivers/block/nbd.c | 5 ++- drivers/block/paride/pcd.c | 21 +++++++++++-- drivers/block/paride/pd.c | 9 +++++- drivers/block/paride/pf.c | 26 ++++++++++++---- drivers/block/pktcdvd.c | 16 ++++++++-- drivers/block/swim.c | 20 +++++++++++- drivers/block/swim3.c | 30 +++++++++++++++++- drivers/block/ub.c | 27 +++++++++++++++-- drivers/block/viodasd.c | 19 +++++++++++- drivers/block/virtio_blk.c | 15 +++++++++- drivers/block/xd.c | 15 +++++++++- drivers/block/xd.h | 2 +- drivers/block/xen-blkfront.c | 9 +++++- drivers/block/xsysace.c | 6 ++++ drivers/block/z2ram.c | 13 ++++++-- drivers/cdrom/gdrom.c | 19 ++++++++++-- drivers/cdrom/viocd.c | 21 +++++++++++-- drivers/ide/ide-cd.c | 30 +++++++++++++++---- drivers/ide/ide-disk_ioctl.c | 9 ++++- drivers/ide/ide-floppy_ioctl.c | 12 +++++-- drivers/ide/ide-gd.c | 19 ++++++++++- drivers/ide/ide-tape.c | 19 ++++++++++-- drivers/md/dm.c | 7 ++++ drivers/md/md.c | 6 ++++ drivers/memstick/core/mspro_block.c | 9 +++++- drivers/message/i2o/i2o_block.c | 19 +++++++++++- drivers/mmc/card/block.c | 5 +++ drivers/mtd/mtd_blkdevs.c | 11 +++++- drivers/s390/block/dasd.c | 6 ++++ drivers/s390/block/dcssblk.c | 5 +++ drivers/s390/char/tape_block.c | 8 ++++- drivers/scsi/sd.c | 3 +- drivers/scsi/sr.c | 22 ++++++++++++- drivers/staging/hv/blkvsc_drv.c | 5 +++ fs/block_dev.c | 10 +----- include/linux/blkdev.h | 1 - include/linux/blktrace_api.h | 12 +++++++ kernel/trace/blktrace.c | 43 ++++++++++++++++++++++++++ 51 files changed, 628 insertions(+), 167 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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