From: Ming Lin <mlin@kernel.org> To: Mike Snitzer <snitzer@redhat.com> Cc: lkml <linux-kernel@vger.kernel.org>, Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>, Kent Overstreet <kent.overstreet@gmail.com>, Dongsu Park <dpark@posteo.net>, Christoph Hellwig <hch@infradead.org>, Al Viro <viro@zeniv.linux.org.uk>, Ming Lei <ming.lei@canonical.com>, Neil Brown <neilb@suse.de>, Alasdair Kergon <agk@redhat.com>, dm-devel@redhat.com, Lars Ellenberg <drbd-dev@lists.linbit.com>, drbd-user@lists.linbit.com, Jiri Kosina <jkosina@suse.cz>, Geoff Levand <geoff@infradead.org>, Jim Paris <jim@jtan.com>, Joshua Morris <josh.h.morris@us.ibm.com>, Philip Kelleher <pjk1939@linux.vnet.ibm.com>, Minchan Kim <minchan@kernel.org>, Nitin Gupta <ngupta@vflare.org>, Oleg Drokin <oleg.drokin@intel.com>, Andreas Dilger <andreas.dilger@intel.com>, Ming Lin <ming.l@ssi.samsung.com> Subject: Re: [PATCH v5 01/11] block: make generic_make_request handle arbitrarily sized bios Date: Fri, 31 Jul 2015 23:58:10 -0700 [thread overview] Message-ID: <1438412290.26596.14.camel@hasee> (raw) In-Reply-To: <20150731213831.GA16464@redhat.com> On Fri, 2015-07-31 at 17:38 -0400, Mike Snitzer wrote: > On Fri, Jul 31 2015 at 5:19pm -0400, > Ming Lin <mlin@kernel.org> wrote: > > > On Fri, Jul 31, 2015 at 12:23 PM, Mike Snitzer <snitzer@redhat.com> wrote: > > > On Mon, Jul 06 2015 at 3:44P -0400, > > > Ming Lin <mlin@kernel.org> wrote: > > > > > >> From: Kent Overstreet <kent.overstreet@gmail.com> > > >> > > >> The way the block layer is currently written, it goes to great lengths > > >> to avoid having to split bios; upper layer code (such as bio_add_page()) > > >> checks what the underlying device can handle and tries to always create > > >> bios that don't need to be split. > > >> > > >> But this approach becomes unwieldy and eventually breaks down with > > >> stacked devices and devices with dynamic limits, and it adds a lot of > > >> complexity. If the block layer could split bios as needed, we could > > >> eliminate a lot of complexity elsewhere - particularly in stacked > > >> drivers. Code that creates bios can then create whatever size bios are > > >> convenient, and more importantly stacked drivers don't have to deal with > > >> both their own bio size limitations and the limitations of the > > >> (potentially multiple) devices underneath them. In the future this will > > >> let us delete merge_bvec_fn and a bunch of other code. > > >> > > >> We do this by adding calls to blk_queue_split() to the various > > >> make_request functions that need it - a few can already handle arbitrary > > >> size bios. Note that we add the call _after_ any call to > > >> blk_queue_bounce(); this means that blk_queue_split() and > > >> blk_recalc_rq_segments() don't need to be concerned with bouncing > > >> affecting segment merging. > > >> > > >> Some make_request_fn() callbacks were simple enough to audit and verify > > >> they don't need blk_queue_split() calls. The skipped ones are: > > >> > > >> * nfhd_make_request (arch/m68k/emu/nfblock.c) > > >> * axon_ram_make_request (arch/powerpc/sysdev/axonram.c) > > >> * simdisk_make_request (arch/xtensa/platforms/iss/simdisk.c) > > >> * brd_make_request (ramdisk - drivers/block/brd.c) > > >> * mtip_submit_request (drivers/block/mtip32xx/mtip32xx.c) > > >> * loop_make_request > > >> * null_queue_bio > > >> * bcache's make_request fns > > >> > > >> Some others are almost certainly safe to remove now, but will be left > > >> for future patches. > > >> > > >> Cc: Jens Axboe <axboe@kernel.dk> > > >> Cc: Christoph Hellwig <hch@infradead.org> > > >> Cc: Al Viro <viro@zeniv.linux.org.uk> > > >> Cc: Ming Lei <ming.lei@canonical.com> > > >> Cc: Neil Brown <neilb@suse.de> > > >> Cc: Alasdair Kergon <agk@redhat.com> > > >> Cc: Mike Snitzer <snitzer@redhat.com> > > >> Cc: dm-devel@redhat.com > > >> Cc: Lars Ellenberg <drbd-dev@lists.linbit.com> > > >> Cc: drbd-user@lists.linbit.com > > >> Cc: Jiri Kosina <jkosina@suse.cz> > > >> Cc: Geoff Levand <geoff@infradead.org> > > >> Cc: Jim Paris <jim@jtan.com> > > >> Cc: Joshua Morris <josh.h.morris@us.ibm.com> > > >> Cc: Philip Kelleher <pjk1939@linux.vnet.ibm.com> > > >> Cc: Minchan Kim <minchan@kernel.org> > > >> Cc: Nitin Gupta <ngupta@vflare.org> > > >> Cc: Oleg Drokin <oleg.drokin@intel.com> > > >> Cc: Andreas Dilger <andreas.dilger@intel.com> > > >> Acked-by: NeilBrown <neilb@suse.de> (for the 'md/md.c' bits) > > >> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> > > >> [dpark: skip more mq-based drivers, resolve merge conflicts, etc.] > > >> Signed-off-by: Dongsu Park <dpark@posteo.net> > > >> Signed-off-by: Ming Lin <ming.l@ssi.samsung.com> > > > ... > > >> diff --git a/block/blk-merge.c b/block/blk-merge.c > > >> index 30a0d9f..3707f30 100644 > > >> --- a/block/blk-merge.c > > >> +++ b/block/blk-merge.c > > >> @@ -9,12 +9,158 @@ > > >> > > >> #include "blk.h" > > >> > > >> +static struct bio *blk_bio_discard_split(struct request_queue *q, > > >> + struct bio *bio, > > >> + struct bio_set *bs) > > >> +{ > > >> + unsigned int max_discard_sectors, granularity; > > >> + int alignment; > > >> + sector_t tmp; > > >> + unsigned split_sectors; > > >> + > > >> + /* Zero-sector (unknown) and one-sector granularities are the same. */ > > >> + granularity = max(q->limits.discard_granularity >> 9, 1U); > > >> + > > >> + max_discard_sectors = min(q->limits.max_discard_sectors, UINT_MAX >> 9); > > >> + max_discard_sectors -= max_discard_sectors % granularity; > > >> + > > >> + if (unlikely(!max_discard_sectors)) { > > >> + /* XXX: warn */ > > >> + return NULL; > > >> + } > > >> + > > >> + if (bio_sectors(bio) <= max_discard_sectors) > > >> + return NULL; > > >> + > > >> + split_sectors = max_discard_sectors; > > >> + > > >> + /* > > >> + * If the next starting sector would be misaligned, stop the discard at > > >> + * the previous aligned sector. > > >> + */ > > >> + alignment = (q->limits.discard_alignment >> 9) % granularity; > > >> + > > >> + tmp = bio->bi_iter.bi_sector + split_sectors - alignment; > > >> + tmp = sector_div(tmp, granularity); > > >> + > > >> + if (split_sectors > tmp) > > >> + split_sectors -= tmp; > > >> + > > >> + return bio_split(bio, split_sectors, GFP_NOIO, bs); > > >> +} > > > > > > This code to stop the discard at the previous aligned sector could be > > > the reason why I have 2 device-mapper-test-suite tests in the > > > 'thin-provisioning' testsuite failing due to this patchset: > > > > I'm setting up the testsuite to debug. > > OK, once setup, to run the 2 tests in question directly you'd do > something like: > > dmtest run --suite thin-provisioning -n discard_a_fragmented_device > > dmtest run --suite thin-provisioning -n discard_fully_provisioned_device_benchmark > > Again, these tests pass without this patchset. It's caused by patch 4. When discard size >=4G, the bio->bi_iter.bi_size overflows. Below is the new patch. Christoph, Could you also help to review it? Now we still do "misaligned" check in blkdev_issue_discard(). So the same code in blk_bio_discard_split() was removed. Please see https://git.kernel.org/cgit/linux/kernel/git/mlin/linux.git/commit/?h=block-generic-req&id=dcc5d9c41 I have updated both patch 1 & 4 on my tree. commit 9607f737de9c4ca1a81655c320a61c287bf77bf5 Author: Ming Lin <ming.l@ssi.samsung.com> Date: Fri May 22 00:46:56 2015 -0700 block: remove split code in blkdev_issue_discard The split code in blkdev_issue_discard() can go away now that any driver that cares does the split, all we have to do is make sure bio size doesn't overflow. Signed-off-by: Ming Lin <ming.l@ssi.samsung.com> --- block/blk-lib.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/block/blk-lib.c b/block/blk-lib.c index 7688ee3..b9e2fca 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -43,7 +43,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector, DECLARE_COMPLETION_ONSTACK(wait); struct request_queue *q = bdev_get_queue(bdev); int type = REQ_WRITE | REQ_DISCARD; - unsigned int max_discard_sectors, granularity; + unsigned int granularity; int alignment; struct bio_batch bb; struct bio *bio; @@ -60,17 +60,6 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector, granularity = max(q->limits.discard_granularity >> 9, 1U); alignment = (bdev_discard_alignment(bdev) >> 9) % granularity; - /* - * Ensure that max_discard_sectors is of the proper - * granularity, so that requests stay aligned after a split. - */ - max_discard_sectors = min(q->limits.max_discard_sectors, UINT_MAX >> 9); - max_discard_sectors -= max_discard_sectors % granularity; - if (unlikely(!max_discard_sectors)) { - /* Avoid infinite loop below. Being cautious never hurts. */ - return -EOPNOTSUPP; - } - if (flags & BLKDEV_DISCARD_SECURE) { if (!blk_queue_secdiscard(q)) return -EOPNOTSUPP; @@ -92,7 +81,8 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector, break; } - req_sects = min_t(sector_t, nr_sects, max_discard_sectors); + /* Make sure bi_size doesn't overflow */ + req_sects = min_t(sector_t, nr_sects, UINT_MAX >> 9); /* * If splitting a request, and the next starting sector would be
WARNING: multiple messages have this Message-ID (diff)
From: Ming Lin <mlin-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> To: Mike Snitzer <snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Cc: Brown <neilb-l3A5Bk7waGM@public.gmane.org>, Ming Lei <ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>, lkml <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>, Alasdair Kergon <agk-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Lars Ellenberg <drbd-dev-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org>, Philip Kelleher <pjk1939-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>, Joshua Morris <josh.h.morris-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>, Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>, Kent Overstreet <kent.overstreet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Nitin Gupta <ngupta-KNmc09w0p+Ednm+yROfE0A@public.gmane.org>, Ming Lin <ming.l-Vzezgt5dB6uUEJcrhfAQsw@public.gmane.org>, Drokin <oleg.drokin-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Oleg-63ez5xqkn6DQT0dZR+AlfA@public.gmane.org, Viro <viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org>, Andreas Dilger <andreas.dilger-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>, Neil-63ez5xqkn6DQT0dZR+AlfA@public.gmane.org, Geoff Levand <geoff-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>, Jiri Kosina <jkosina-AlSwsSmVLrQ@public.gmane.org>, Al-63ez5xqkn6DQT0dZR+AlfA@public.gmane.org, Jim Paris <jim-XrPbb/hENzg@public.gmane.org>, Minchan Kim <minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Dongsu Park <dpark-VwIFZPTo/vqsTnJN9+BGXg@public.gmane.org>, drbd-user-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org Subject: Re: [PATCH v5 01/11] block: make generic_make_request handle arbitrarily sized bios Date: Fri, 31 Jul 2015 23:58:10 -0700 [thread overview] Message-ID: <1438412290.26596.14.camel@hasee> (raw) In-Reply-To: <20150731213831.GA16464-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> On Fri, 2015-07-31 at 17:38 -0400, Mike Snitzer wrote: > On Fri, Jul 31 2015 at 5:19pm -0400, > Ming Lin <mlin-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote: > > > On Fri, Jul 31, 2015 at 12:23 PM, Mike Snitzer <snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote: > > > On Mon, Jul 06 2015 at 3:44P -0400, > > > Ming Lin <mlin-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote: > > > > > >> From: Kent Overstreet <kent.overstreet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> > > >> > > >> The way the block layer is currently written, it goes to great lengths > > >> to avoid having to split bios; upper layer code (such as bio_add_page()) > > >> checks what the underlying device can handle and tries to always create > > >> bios that don't need to be split. > > >> > > >> But this approach becomes unwieldy and eventually breaks down with > > >> stacked devices and devices with dynamic limits, and it adds a lot of > > >> complexity. If the block layer could split bios as needed, we could > > >> eliminate a lot of complexity elsewhere - particularly in stacked > > >> drivers. Code that creates bios can then create whatever size bios are > > >> convenient, and more importantly stacked drivers don't have to deal with > > >> both their own bio size limitations and the limitations of the > > >> (potentially multiple) devices underneath them. In the future this will > > >> let us delete merge_bvec_fn and a bunch of other code. > > >> > > >> We do this by adding calls to blk_queue_split() to the various > > >> make_request functions that need it - a few can already handle arbitrary > > >> size bios. Note that we add the call _after_ any call to > > >> blk_queue_bounce(); this means that blk_queue_split() and > > >> blk_recalc_rq_segments() don't need to be concerned with bouncing > > >> affecting segment merging. > > >> > > >> Some make_request_fn() callbacks were simple enough to audit and verify > > >> they don't need blk_queue_split() calls. The skipped ones are: > > >> > > >> * nfhd_make_request (arch/m68k/emu/nfblock.c) > > >> * axon_ram_make_request (arch/powerpc/sysdev/axonram.c) > > >> * simdisk_make_request (arch/xtensa/platforms/iss/simdisk.c) > > >> * brd_make_request (ramdisk - drivers/block/brd.c) > > >> * mtip_submit_request (drivers/block/mtip32xx/mtip32xx.c) > > >> * loop_make_request > > >> * null_queue_bio > > >> * bcache's make_request fns > > >> > > >> Some others are almost certainly safe to remove now, but will be left > > >> for future patches. > > >> > > >> Cc: Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> > > >> Cc: Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> > > >> Cc: Al Viro <viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org> > > >> Cc: Ming Lei <ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org> > > >> Cc: Neil Brown <neilb-l3A5Bk7waGM@public.gmane.org> > > >> Cc: Alasdair Kergon <agk-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> > > >> Cc: Mike Snitzer <snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> > > >> Cc: dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org > > >> Cc: Lars Ellenberg <drbd-dev-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org> > > >> Cc: drbd-user-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org > > >> Cc: Jiri Kosina <jkosina-AlSwsSmVLrQ@public.gmane.org> > > >> Cc: Geoff Levand <geoff-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> > > >> Cc: Jim Paris <jim-XrPbb/hENzg@public.gmane.org> > > >> Cc: Joshua Morris <josh.h.morris-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org> > > >> Cc: Philip Kelleher <pjk1939-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> > > >> Cc: Minchan Kim <minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> > > >> Cc: Nitin Gupta <ngupta-KNmc09w0p+Ednm+yROfE0A@public.gmane.org> > > >> Cc: Oleg Drokin <oleg.drokin-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> > > >> Cc: Andreas Dilger <andreas.dilger-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> > > >> Acked-by: NeilBrown <neilb-l3A5Bk7waGM@public.gmane.org> (for the 'md/md.c' bits) > > >> Signed-off-by: Kent Overstreet <kent.overstreet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> > > >> [dpark: skip more mq-based drivers, resolve merge conflicts, etc.] > > >> Signed-off-by: Dongsu Park <dpark-VwIFZPTo/vqsTnJN9+BGXg@public.gmane.org> > > >> Signed-off-by: Ming Lin <ming.l-Vzezgt5dB6uUEJcrhfAQsw@public.gmane.org> > > > ... > > >> diff --git a/block/blk-merge.c b/block/blk-merge.c > > >> index 30a0d9f..3707f30 100644 > > >> --- a/block/blk-merge.c > > >> +++ b/block/blk-merge.c > > >> @@ -9,12 +9,158 @@ > > >> > > >> #include "blk.h" > > >> > > >> +static struct bio *blk_bio_discard_split(struct request_queue *q, > > >> + struct bio *bio, > > >> + struct bio_set *bs) > > >> +{ > > >> + unsigned int max_discard_sectors, granularity; > > >> + int alignment; > > >> + sector_t tmp; > > >> + unsigned split_sectors; > > >> + > > >> + /* Zero-sector (unknown) and one-sector granularities are the same. */ > > >> + granularity = max(q->limits.discard_granularity >> 9, 1U); > > >> + > > >> + max_discard_sectors = min(q->limits.max_discard_sectors, UINT_MAX >> 9); > > >> + max_discard_sectors -= max_discard_sectors % granularity; > > >> + > > >> + if (unlikely(!max_discard_sectors)) { > > >> + /* XXX: warn */ > > >> + return NULL; > > >> + } > > >> + > > >> + if (bio_sectors(bio) <= max_discard_sectors) > > >> + return NULL; > > >> + > > >> + split_sectors = max_discard_sectors; > > >> + > > >> + /* > > >> + * If the next starting sector would be misaligned, stop the discard at > > >> + * the previous aligned sector. > > >> + */ > > >> + alignment = (q->limits.discard_alignment >> 9) % granularity; > > >> + > > >> + tmp = bio->bi_iter.bi_sector + split_sectors - alignment; > > >> + tmp = sector_div(tmp, granularity); > > >> + > > >> + if (split_sectors > tmp) > > >> + split_sectors -= tmp; > > >> + > > >> + return bio_split(bio, split_sectors, GFP_NOIO, bs); > > >> +} > > > > > > This code to stop the discard at the previous aligned sector could be > > > the reason why I have 2 device-mapper-test-suite tests in the > > > 'thin-provisioning' testsuite failing due to this patchset: > > > > I'm setting up the testsuite to debug. > > OK, once setup, to run the 2 tests in question directly you'd do > something like: > > dmtest run --suite thin-provisioning -n discard_a_fragmented_device > > dmtest run --suite thin-provisioning -n discard_fully_provisioned_device_benchmark > > Again, these tests pass without this patchset. It's caused by patch 4. When discard size >=4G, the bio->bi_iter.bi_size overflows. Below is the new patch. Christoph, Could you also help to review it? Now we still do "misaligned" check in blkdev_issue_discard(). So the same code in blk_bio_discard_split() was removed. Please see https://git.kernel.org/cgit/linux/kernel/git/mlin/linux.git/commit/?h=block-generic-req&id=dcc5d9c41 I have updated both patch 1 & 4 on my tree. commit 9607f737de9c4ca1a81655c320a61c287bf77bf5 Author: Ming Lin <ming.l-Vzezgt5dB6uUEJcrhfAQsw@public.gmane.org> Date: Fri May 22 00:46:56 2015 -0700 block: remove split code in blkdev_issue_discard The split code in blkdev_issue_discard() can go away now that any driver that cares does the split, all we have to do is make sure bio size doesn't overflow. Signed-off-by: Ming Lin <ming.l-Vzezgt5dB6uUEJcrhfAQsw@public.gmane.org> --- block/blk-lib.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/block/blk-lib.c b/block/blk-lib.c index 7688ee3..b9e2fca 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -43,7 +43,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector, DECLARE_COMPLETION_ONSTACK(wait); struct request_queue *q = bdev_get_queue(bdev); int type = REQ_WRITE | REQ_DISCARD; - unsigned int max_discard_sectors, granularity; + unsigned int granularity; int alignment; struct bio_batch bb; struct bio *bio; @@ -60,17 +60,6 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector, granularity = max(q->limits.discard_granularity >> 9, 1U); alignment = (bdev_discard_alignment(bdev) >> 9) % granularity; - /* - * Ensure that max_discard_sectors is of the proper - * granularity, so that requests stay aligned after a split. - */ - max_discard_sectors = min(q->limits.max_discard_sectors, UINT_MAX >> 9); - max_discard_sectors -= max_discard_sectors % granularity; - if (unlikely(!max_discard_sectors)) { - /* Avoid infinite loop below. Being cautious never hurts. */ - return -EOPNOTSUPP; - } - if (flags & BLKDEV_DISCARD_SECURE) { if (!blk_queue_secdiscard(q)) return -EOPNOTSUPP; @@ -92,7 +81,8 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector, break; } - req_sects = min_t(sector_t, nr_sects, max_discard_sectors); + /* Make sure bi_size doesn't overflow */ + req_sects = min_t(sector_t, nr_sects, UINT_MAX >> 9); /* * If splitting a request, and the next starting sector would be
next prev parent reply other threads:[~2015-08-01 6:58 UTC|newest] Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-07-06 7:44 [PATCH v5 01/11] block: make generic_make_request handle arbitrarily sized bios Ming Lin 2015-07-06 7:44 ` [PATCH v5 02/11] block: simplify bio_add_page() Ming Lin 2015-07-06 7:44 ` [PATCH v5 03/11] bcache: remove driver private bio splitting code Ming Lin 2015-07-06 7:44 ` [PATCH v5 04/11] btrfs: remove bio splitting and merge_bvec_fn() calls Ming Lin 2015-07-06 7:44 ` [PATCH v5 05/11] block: remove split code in blkdev_issue_discard Ming Lin 2015-07-06 7:44 ` [PATCH v5 06/11] md/raid5: split bio for chunk_aligned_read Ming Lin 2015-07-06 7:44 ` [PATCH v5 07/11] md/raid5: get rid of bio_fits_rdev() Ming Lin 2015-07-06 7:44 ` [PATCH v5 08/11] block: kill merge_bvec_fn() completely Ming Lin 2015-07-06 7:44 ` [PATCH v5 09/11] fs: use helper bio_add_page() instead of open coding on bi_io_vec Ming Lin 2015-07-06 7:44 ` [PATCH v5 10/11] block: remove bio_get_nr_vecs() Ming Lin 2015-07-06 10:58 ` Steven Whitehouse 2015-07-06 17:21 ` Ming Lin 2015-07-07 9:04 ` Steven Whitehouse 2015-07-06 7:44 ` [PATCH v5 11/11] Documentation: update notes in biovecs about arbitrarily sized bios Ming Lin 2015-07-31 19:23 ` [PATCH v5 01/11] block: make generic_make_request handle " Mike Snitzer 2015-07-31 21:19 ` Ming Lin 2015-07-31 21:19 ` Ming Lin 2015-07-31 21:38 ` Mike Snitzer 2015-07-31 21:38 ` Mike Snitzer 2015-07-31 22:02 ` Ming Lin 2015-07-31 22:18 ` Ming Lin 2015-08-01 6:58 ` Ming Lin [this message] 2015-08-01 6:58 ` Ming Lin 2015-08-01 16:33 ` Mike Snitzer 2015-08-03 5:58 ` Ming Lin 2015-08-03 5:58 ` Ming Lin 2015-08-04 11:36 ` Christoph Hellwig 2015-08-05 6:03 ` Ming Lin 2015-08-05 6:03 ` Ming Lin 2015-08-07 7:30 ` Christoph Hellwig 2015-08-07 7:30 ` Christoph Hellwig 2015-08-07 23:40 ` Ming Lin 2015-08-07 23:40 ` Ming Lin 2015-08-08 0:30 ` Kent Overstreet 2015-08-08 5:17 ` Ming Lin 2015-08-08 5:17 ` Ming Lin 2015-08-08 5:22 ` Kent Overstreet 2015-08-08 12:35 ` Christoph Hellwig 2015-08-08 12:35 ` Christoph Hellwig 2015-08-08 8:52 ` [dm-devel] " Hannes Reinecke 2015-08-08 9:02 ` Kent Overstreet 2015-08-13 6:04 ` Hannes Reinecke 2015-08-07 0:00 ` Kent Overstreet 2015-08-07 7:30 ` Christoph Hellwig 2015-08-07 7:30 ` Christoph Hellwig 2015-08-08 16:19 ` [dm-devel] " Martin K. Petersen 2015-08-08 16:19 ` Martin K. Petersen 2015-08-09 5:59 ` Ming Lin 2015-08-09 5:59 ` Ming Lin 2015-08-09 6:41 ` Christoph Hellwig 2015-08-09 6:41 ` Christoph Hellwig 2015-08-09 6:55 ` Ming Lin 2015-08-09 6:55 ` Ming Lin 2015-08-09 7:01 ` Christoph Hellwig 2015-08-09 7:01 ` Christoph Hellwig 2015-08-09 7:18 ` Ming Lin 2015-08-09 7:18 ` Ming Lin 2015-08-10 15:02 ` Mike Snitzer 2015-08-10 15:02 ` Mike Snitzer 2015-08-10 16:14 ` Ming Lin 2015-08-10 16:14 ` Ming Lin 2015-08-10 16:18 ` Ming Lin 2015-08-10 16:18 ` Ming Lin 2015-08-10 16:40 ` Martin K. Petersen 2015-08-10 16:40 ` Martin K. Petersen 2015-08-10 18:13 ` Mike Snitzer 2015-08-10 22:30 ` Ming Lin 2015-08-10 22:30 ` Ming Lin 2015-08-10 16:22 ` Martin K. Petersen 2015-08-10 16:22 ` Martin K. Petersen 2015-08-10 18:18 ` Ming Lin 2015-08-11 2:00 ` Martin K. Petersen 2015-08-11 2:00 ` Martin K. Petersen 2015-08-11 2:41 ` Mike Snitzer 2015-08-11 2:41 ` Mike Snitzer 2015-08-11 3:38 ` Kent Overstreet 2015-08-11 14:08 ` Mike Snitzer 2015-08-11 14:08 ` Mike Snitzer 2015-08-11 17:49 ` Martin K. Petersen 2015-08-11 17:49 ` Martin K. Petersen 2015-08-11 18:05 ` Martin K. Petersen 2015-08-11 18:05 ` Martin K. Petersen 2015-08-11 20:56 ` Ming Lin 2015-08-11 20:56 ` Ming Lin 2015-08-12 0:24 ` Martin K. Petersen 2015-08-12 0:24 ` Martin K. Petersen 2015-08-12 4:41 ` Ming Lin 2015-08-12 4:41 ` Ming Lin 2015-08-11 17:36 ` Martin K. Petersen 2015-08-11 17:36 ` Martin K. Petersen 2015-08-11 17:47 ` Mike Snitzer 2015-08-11 17:47 ` Mike Snitzer 2015-08-11 18:01 ` [dm-devel] " Martin K. Petersen 2015-08-11 18:01 ` Martin K. Petersen 2015-08-18 5:09 ` Ming Lin 2015-08-18 7:04 ` Ming Lin 2015-08-18 14:45 ` Mike Snitzer 2015-08-18 17:32 ` Ming Lin 2015-08-18 19:59 ` Mike Snitzer 2015-08-18 21:16 ` Ming Lin 2015-08-18 21:22 ` Mike Snitzer 2015-08-18 22:17 ` Ming Lin -- strict thread matches above, loose matches on Subject: below -- 2015-07-06 7:11 [PATCH v5 00/11] simplify block layer based on immutable biovecs mlin 2015-07-06 7:11 ` [PATCH v5 01/11] block: make generic_make_request handle arbitrarily sized bios mlin
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