Re: [PATCH] iommu/amd: Take mmap_sem when calling get_user_pages

2014-05-12 Thread Joerg Roedel
On Mon, Apr 28, 2014 at 05:27:46PM -0500, suravee.suthikulpa...@amd.com wrote: > From: Jay Cornwall > > get_user_pages requires caller to hold a read lock on mmap_sem. > > Signed-off-by: Jay Cornwall > Signed-off-by: Suravee Suthikulpanit Applied, thanks Jay and Suravee. -- To unsubscribe fr

Re: [PATCH] iommu/amd: Take mmap_sem when calling get_user_pages

2014-05-06 Thread Suravee Suthikulanit
On 5/6/2014 2:11 PM, Suravee Suthikulanit wrote: On 5/6/2014 1:14 PM, Joerg Roedel wrote: On Mon, Apr 28, 2014 at 05:27:46PM -0500, Suthikulpanit, Suravee wrote: From: Jay Cornwall get_user_pages requires caller to hold a read lock on mmap_sem. Right, but can't we just switch to get_user_pa

Re: [PATCH] iommu/amd: Take mmap_sem when calling get_user_pages

2014-05-06 Thread Suravee Suthikulanit
On 5/6/2014 1:14 PM, Joerg Roedel wrote: On Mon, Apr 28, 2014 at 05:27:46PM -0500, Suthikulpanit, Suravee wrote: From: Jay Cornwall get_user_pages requires caller to hold a read lock on mmap_sem. Right, but can't we just switch to get_user_pages_fast instead? Joerg You're right.

Re: [PATCH] iommu/amd: Take mmap_sem when calling get_user_pages

2014-05-06 Thread Joerg Roedel
On Mon, Apr 28, 2014 at 05:27:46PM -0500, Suthikulpanit, Suravee wrote: > From: Jay Cornwall > > get_user_pages requires caller to hold a read lock on mmap_sem. Right, but can't we just switch to get_user_pages_fast instead? Joerg -- To unsubscribe from this list: send the line "unsu