* + drivers-virt-use-get_user_pages_unlocked.patch added to -mm tree
@ 2017-03-04 0:22 akpm
0 siblings, 0 replies; 2+ messages in thread
From: akpm @ 2017-03-04 0:22 UTC (permalink / raw)
To: lstoakes, galak, gregkh, mhocko, mihai.caraman, pbonzini, mm-commits
The patch titled
Subject: drivers/virt/fsl_hypervisor.c: use get_user_pages_unlocked()
has been added to the -mm tree. Its filename is
drivers-virt-use-get_user_pages_unlocked.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/drivers-virt-use-get_user_pages_unlocked.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/drivers-virt-use-get_user_pages_unlocked.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Lorenzo Stoakes <lstoakes@gmail.com>
Subject: drivers/virt/fsl_hypervisor.c: use get_user_pages_unlocked()
Moving from get_user_pages() to get_user_pages_unlocked() simplifies the code
and takes advantage of VM_FAULT_RETRY functionality when faulting in pages.
Link: http://lkml.kernel.org/r/20161101194332.23961-1-lstoakes@gmail.com
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Mihai Caraman <mihai.caraman@freescale.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
drivers/virt/fsl_hypervisor.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff -puN drivers/virt/fsl_hypervisor.c~drivers-virt-use-get_user_pages_unlocked drivers/virt/fsl_hypervisor.c
--- a/drivers/virt/fsl_hypervisor.c~drivers-virt-use-get_user_pages_unlocked
+++ a/drivers/virt/fsl_hypervisor.c
@@ -243,11 +243,8 @@ static long ioctl_memcpy(struct fsl_hv_i
sg_list = PTR_ALIGN(sg_list_unaligned, sizeof(struct fh_sg_list));
/* Get the physical addresses of the source buffer */
- down_read(¤t->mm->mmap_sem);
- num_pinned = get_user_pages(param.local_vaddr - lb_offset,
- num_pages, (param.source == -1) ? 0 : FOLL_WRITE,
- pages, NULL);
- up_read(¤t->mm->mmap_sem);
+ num_pinned = get_user_pages_unlocked(param.local_vaddr - lb_offset,
+ num_pages, pages, (param.source == -1) ? 0 : FOLL_WRITE);
if (num_pinned != num_pages) {
/* get_user_pages() failed */
_
Patches currently in -mm which might be from lstoakes@gmail.com are
drivers-virt-use-get_user_pages_unlocked.patch
^ permalink raw reply [flat|nested] 2+ messages in thread
* + drivers-virt-use-get_user_pages_unlocked.patch added to -mm tree
@ 2017-03-04 0:19 akpm
0 siblings, 0 replies; 2+ messages in thread
From: akpm @ 2017-03-04 0:19 UTC (permalink / raw)
To: lstoakes, galak, gregkh, mhocko, mihai.caraman, pbonzini, mm-commits
The patch titled
Subject: drivers/virt/fsl_hypervisor.c: use get_user_pages_unlocked()
has been added to the -mm tree. Its filename is
drivers-virt-use-get_user_pages_unlocked.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/drivers-virt-use-get_user_pages_unlocked.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/drivers-virt-use-get_user_pages_unlocked.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Lorenzo Stoakes <lstoakes@gmail.com>
Subject: drivers/virt/fsl_hypervisor.c: use get_user_pages_unlocked()
Moving from get_user_pages() to get_user_pages_unlocked() simplifies the code
and takes advantage of VM_FAULT_RETRY functionality when faulting in pages.
Link: http://lkml.kernel.org/r/20161101194332.23961-1-lstoakes@gmail.com
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Mihai Caraman <mihai.caraman@freescale.com>
Cc: Greg KH <gregkh@linuxfoundation.org
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
drivers/virt/fsl_hypervisor.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff -puN drivers/virt/fsl_hypervisor.c~drivers-virt-use-get_user_pages_unlocked drivers/virt/fsl_hypervisor.c
--- a/drivers/virt/fsl_hypervisor.c~drivers-virt-use-get_user_pages_unlocked
+++ a/drivers/virt/fsl_hypervisor.c
@@ -243,11 +243,8 @@ static long ioctl_memcpy(struct fsl_hv_i
sg_list = PTR_ALIGN(sg_list_unaligned, sizeof(struct fh_sg_list));
/* Get the physical addresses of the source buffer */
- down_read(¤t->mm->mmap_sem);
- num_pinned = get_user_pages(param.local_vaddr - lb_offset,
- num_pages, (param.source == -1) ? 0 : FOLL_WRITE,
- pages, NULL);
- up_read(¤t->mm->mmap_sem);
+ num_pinned = get_user_pages_unlocked(param.local_vaddr - lb_offset,
+ num_pages, pages, (param.source == -1) ? 0 : FOLL_WRITE);
if (num_pinned != num_pages) {
/* get_user_pages() failed */
_
Patches currently in -mm which might be from lstoakes@gmail.com are
drivers-virt-use-get_user_pages_unlocked.patch
^ permalink raw reply [flat|nested] 2+ messages in thread
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2017-03-04 0:19 akpm
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