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Message-ID: <20190428115207.GA11924@ziepe.ca>
Date: Sun, 28 Apr 2019 11:52:12 +0000
From: Jason Gunthorpe <jgg@...lanox.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>,
Doug Ledford <dledford@...hat.com>
CC: "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] Please pull RDMA subsystem changes
Hi Linus,
Third rc pull request
Nothing particularly special here. There is a small merge conflict
with Adrea's mm_still_valid patches which is resolved as below:
diff --cc drivers/infiniband/core/uverbs_main.c
index db20b6e0f253c9,f2e7ffe6fc5466..7843e89235c34b
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@@ -1039,7 -992,9 +1039,9 @@@ void uverbs_user_mmap_disassociate(stru
* at a time to get the lock ordering right. Typically there
* will only be one mm, so no big deal.
*/
- down_write(&mm->mmap_sem);
+ down_read(&mm->mmap_sem);
+ if (!mmget_still_valid(mm))
+ goto skip_mm;
mutex_lock(&ufile->umap_lock);
list_for_each_entry_safe (priv, next_priv, &ufile->umaps,
list) {
@@@ -1051,9 -1006,11 +1053,10 @@@
zap_vma_ptes(vma, vma->vm_start,
vma->vm_end - vma->vm_start);
- vma->vm_flags &= ~(VM_SHARED | VM_MAYSHARE);
}
mutex_unlock(&ufile->umap_lock);
+ skip_mm:
- up_write(&mm->mmap_sem);
+ up_read(&mm->mmap_sem);
mmput(mm);
}
}
The tag for-linus-merged with my merge resolution to your tree is also available to pull.
Thanks,
Jason
The following changes since commit dc4060a5dc2557e6b5aa813bf5b73677299d62d2:
Linux 5.1-rc5 (2019-04-14 15:17:41 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git tags/for-linus
for you to fetch changes up to 2557fabd6e29f349bfa0ac13f38ac98aa5eafc74:
RDMA/hns: Bugfix for mapping user db (2019-04-25 10:40:04 -0300)
----------------------------------------------------------------
5.1 Third RC pull request
One core bug fix and a few driver ones
- FRWR memory registration for hfi1/qib didn't work with with some iovas
causing a NFSoRDMA failure regression due to a fix in the NFS side
- A command flow error in mlx5 allowed user space to send a corrupt
command (and also smash the kernel stack we've since learned)
- Fix a regression and some bugs with device hot unplug that was
discovered while reviewing Andrea's patches
- hns has a failure if the user asks for certain QP configurations
----------------------------------------------------------------
Guy Levi (1):
IB/mlx5: Fix scatter to CQE in DCT QP creation
Jason Gunthorpe (3):
RDMA/mlx5: Do not allow the user to write to the clock page
RDMA/mlx5: Use rdma_user_map_io for mapping BAR pages
RDMA/ucontext: Fix regression with disassociate
Josh Collier (1):
IB/rdmavt: Fix frwr memory registration
Lijun Ou (1):
RDMA/hns: Bugfix for mapping user db
drivers/infiniband/core/uverbs.h | 1 +
drivers/infiniband/core/uverbs_main.c | 52 +++++++++++++++++++++++++++++++--
drivers/infiniband/hw/hns/hns_roce_qp.c | 2 +-
drivers/infiniband/hw/mlx5/main.c | 12 ++++----
drivers/infiniband/hw/mlx5/qp.c | 11 ++++---
drivers/infiniband/sw/rdmavt/mr.c | 17 ++++++-----
include/uapi/rdma/mlx5-abi.h | 1 +
7 files changed, 76 insertions(+), 20 deletions(-)
(diffstat from tag for-linus-merged)
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