On 6/20/17 4:35 PM, Prakash Sangappa wrote:
On 6/16/17 6:15 AM, Andrea Arcangeli wrote:
Adding a single if (ctx->feature & UFFD_FEATURE_SIGBUS) goto out,
branch for this corner case to handle_userfault() isn't great and the
hugetlbfs mount option is absolutely zero cost to the handle_userfault
which is primarily why I'm not against it.. although it's not going to
be measurable so it would be ok also to add such feature.
If implementing UFFD_FEATURE_SIGBUS is preferred instead of the mount
option, I could look into that.
Implementing UFFD_FEATURE_SIGBUS seems reasonable.
I wanted to note here on this thread that I sent out a seperate
RFC patch review for adding UFFD_FEATURE_SIGBUS.
See,
http://marc.info/?l=linux-mm&m=149857975906880&w=2
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
