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.../21/2017 10:27 AM, Jens Axboe wrote: > On 11/21/2017 03:14 AM, Christian Borntraeger wrote: >> Bisect points to >> >> 1b5a7455d345b223d3a4658a9e5fce985b7998c1 is the first bad commit >> commit 1b5a7455d345b223d3a4658a9e5fce985b7998c1 >> Author: Christoph Hellwig <hch at lst.de> >> Date: Mon Jun 26 12:20:57 2017 +0200 >> >> blk-mq: Create hctx for each present CPU >> >> commit 4b855ad37194f7bdbb200ce7a1c7051fecb56a08 upstream. >> >> Currently we only create hctx for online CPUs, which can lead...

.../21/2017 10:27 AM, Jens Axboe wrote: > On 11/21/2017 03:14 AM, Christian Borntraeger wrote: >> Bisect points to >> >> 1b5a7455d345b223d3a4658a9e5fce985b7998c1 is the first bad commit >> commit 1b5a7455d345b223d3a4658a9e5fce985b7998c1 >> Author: Christoph Hellwig <hch at lst.de> >> Date: Mon Jun 26 12:20:57 2017 +0200 >> >> blk-mq: Create hctx for each present CPU >> >> commit 4b855ad37194f7bdbb200ce7a1c7051fecb56a08 upstream. >> >> Currently we only create hctx for online CPUs, which can lead...

On Tue, Jun 18, 2019 at 12:47:10PM -0700, Dan Williams wrote: > > Git tree: > > > > git://git.infradead.org/users/hch/misc.git hmm-devmem-cleanup.2 > > > > Gitweb: > > > > http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/hmm-devmem-cleanup.2 > > Attached is my incremental fixups on top of this series, with those > integrated you can add: I've folded your i...

...for virtblk, etc? >> >> FWIW, 4.11 does work, 4.12 and later is broken. > > In fact: 4.12 is fine, 4.12.14 is broken. Bisect points to 1b5a7455d345b223d3a4658a9e5fce985b7998c1 is the first bad commit commit 1b5a7455d345b223d3a4658a9e5fce985b7998c1 Author: Christoph Hellwig <hch at lst.de> Date: Mon Jun 26 12:20:57 2017 +0200 blk-mq: Create hctx for each present CPU commit 4b855ad37194f7bdbb200ce7a1c7051fecb56a08 upstream. Currently we only create hctx for online CPUs, which can lead to a lot of churn due to frequent soft offline / online op...

...for virtblk, etc? >> >> FWIW, 4.11 does work, 4.12 and later is broken. > > In fact: 4.12 is fine, 4.12.14 is broken. Bisect points to 1b5a7455d345b223d3a4658a9e5fce985b7998c1 is the first bad commit commit 1b5a7455d345b223d3a4658a9e5fce985b7998c1 Author: Christoph Hellwig <hch at lst.de> Date: Mon Jun 26 12:20:57 2017 +0200 blk-mq: Create hctx for each present CPU commit 4b855ad37194f7bdbb200ce7a1c7051fecb56a08 upstream. Currently we only create hctx for online CPUs, which can lead to a lot of churn due to frequent soft offline / online op...

[ add Ira ] On Wed, Jun 26, 2019 at 5:27 AM Christoph Hellwig <hch at lst.de> wrote: > > The code hasn't been used since it was added to the tree, and doesn't > appear to actually be usable. > > Signed-off-by: Christoph Hellwig <hch at lst.de> > Reviewed-by: Jason Gunthorpe <jgg at mellanox.com> > Acked-by: Michal Hocko...

...i Jérôme, Ben, Felxi and Jason, below is a series against the hmm tree which cleans up various minor bits and allows HMM_MIRROR to be built on all architectures. Diffstat: 7 files changed, 81 insertions(+), 171 deletions(-) A git tree is also available at: git://git.infradead.org/users/hch/misc.git hmm-cleanups Gitweb: http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/hmm-cleanups

On 2019-06-13 12:27 p.m., Dan Williams wrote: > On Thu, Jun 13, 2019 at 2:43 AM Christoph Hellwig <hch at lst.de> wrote: >> >> Hi Dan, Jérôme and Jason, >> >> below is a series that cleans up the dev_pagemap interface so that >> it is more easily usable, which removes the need to wrap it in hmm >> and thus allowing to kill a lot of code >> >> Diffst...

...Jérôme, Ben, Felix and Jason, below is a series against the hmm tree which cleans up various minor bits and allows HMM_MIRROR to be built on all architectures. Diffstat: 11 files changed, 94 insertions(+), 210 deletions(-) A git tree is also available at: git://git.infradead.org/users/hch/misc.git hmm-cleanups.2 Gitweb: http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/hmm-cleanups.2 Changes since v1: - fix the cover letter subject - improve various patch descriptions - use svmm->mm in nouveau_range_fault - inverse the hmask field when using it - select...

...GPF in virtio related code. Multiple people have done bisections (Thank you Thorsten Leemhuis and Richard W.M. Jones) and found this commit to be at fault 07ec51480b5eb1233f8c1b0f5d7a7c8d1247c507 is the first bad commit commit 07ec51480b5eb1233f8c1b0f5d7a7c8d1247c507 Author: Christoph Hellwig <hch at lst.de> Date: Sun Feb 5 18:15:19 2017 +0100 virtio_pci: use shared interrupts for virtqueues This lets IRQ layer handle dispatching IRQs to separate handlers for the case where we don't have per-VQ MSI-X vectors, and allows us to greatly simplify the code based on...

...GPF in virtio related code. Multiple people have done bisections (Thank you Thorsten Leemhuis and Richard W.M. Jones) and found this commit to be at fault 07ec51480b5eb1233f8c1b0f5d7a7c8d1247c507 is the first bad commit commit 07ec51480b5eb1233f8c1b0f5d7a7c8d1247c507 Author: Christoph Hellwig <hch at lst.de> Date: Sun Feb 5 18:15:19 2017 +0100 virtio_pci: use shared interrupts for virtqueues This lets IRQ layer handle dispatching IRQs to separate handlers for the case where we don't have per-VQ MSI-X vectors, and allows us to greatly simplify the code based on...

Use the bvec_set_page helper to initialize a bvec. Signed-off-by: Christoph Hellwig <hch at lst.de> --- drivers/vhost/vringh.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c index 33eb941fcf1546..a1e27da544814a 100644 --- a/drivers/vhost/vringh.c +++ b/drivers/vhost/vringh.c @@ -1126,9 +1126,8 @@ static int i...

On Wed, Jun 19, 2019 at 11:40:32AM +0200, Christoph Hellwig wrote: > On Tue, Jun 18, 2019 at 12:47:10PM -0700, Dan Williams wrote: > > > Git tree: > > > > > > git://git.infradead.org/users/hch/misc.git hmm-devmem-cleanup.2 > > > > > > Gitweb: > > > > > > http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/hmm-devmem-cleanup.2 > > > > > Attached is my incremental fixups on top of this series, with those > > integra...

...; On 11/21/2017 03:14 AM, Christian Borntraeger wrote: >>>> Bisect points to >>>> >>>> 1b5a7455d345b223d3a4658a9e5fce985b7998c1 is the first bad commit >>>> commit 1b5a7455d345b223d3a4658a9e5fce985b7998c1 >>>> Author: Christoph Hellwig <hch at lst.de> >>>> Date: Mon Jun 26 12:20:57 2017 +0200 >>>> >>>> blk-mq: Create hctx for each present CPU >>>> >>>> commit 4b855ad37194f7bdbb200ce7a1c7051fecb56a08 upstream. >>>> >>>> Curren...

...; On 11/21/2017 03:14 AM, Christian Borntraeger wrote: >>>> Bisect points to >>>> >>>> 1b5a7455d345b223d3a4658a9e5fce985b7998c1 is the first bad commit >>>> commit 1b5a7455d345b223d3a4658a9e5fce985b7998c1 >>>> Author: Christoph Hellwig <hch at lst.de> >>>> Date: Mon Jun 26 12:20:57 2017 +0200 >>>> >>>> blk-mq: Create hctx for each present CPU >>>> >>>> commit 4b855ad37194f7bdbb200ce7a1c7051fecb56a08 upstream. >>>> >>>> Curren...

Hi Jérôme, Ben and Jason, below is a series against the hmm tree which fixes up the mmap_sem locking in nouveau and while at it also removes leftover legacy HMM APIs only used by nouveau. The first 4 patches are a bug fix for nouveau, which I suspect should go into this merge window even if the code is marked as staging, just to avoid people copying the breakage. Changes since v1: - don't

...it-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Christoph Hellwig <hch at lst.de> Subject: ocfs2: don't use write_one_page in ocfs2_duplicate_clusters_by_page Date: Tue, 7 Mar 2023 15:31:24 +0100 Use filemap_write_and_wait_range to write back the range of the dirty page instead of write_one_page in preparation of removing write_one_page and eventually ->wri...

...stores the behavior at time of the virtio-blk blk-mq conversion, which was changed by commit "block: add queue flag for disabling SG merging" which made the behavior optional, but didn't update the existing drivers to keep their previous behavior. Signed-off-by: Christoph Hellwig <hch at lst.de> --- drivers/block/virtio_blk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 0a58140..311b857 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -634,7 +634,7 @@ static int vi...

...stores the behavior at time of the virtio-blk blk-mq conversion, which was changed by commit "block: add queue flag for disabling SG merging" which made the behavior optional, but didn't update the existing drivers to keep their previous behavior. Signed-off-by: Christoph Hellwig <hch at lst.de> --- drivers/block/virtio_blk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 0a58140..311b857 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -634,7 +634,7 @@ static int vi...

Without this fix attempts to do scsi passthrough on virtio_blk will crash the system on virtually mapped stacks, which is something happening during boot with many distros.