UserfaultFD: Extension for non cooperative uffd usage (v2)
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Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/5 | uffd: Split the find_userfault() routinefs/ | +12 | 0 replies | |
| 2/5 | uffd: Add ability to report non-PF events from uffd descriptorfs/ | +95 | 0 replies | |
| 3/5 | uffd: Add fork() eventfs/ include/ include/ +1 more | +163 | 0 replies | |
| 4/5 | uffd: Add mremap() eventfs/ include/ include/ +1 more | +76 | 0 replies | |
| 5/5 | uffd: Add madvise() event for MADV_DONTNEED requestfs/ include/ include/ +1 more | +46 | 0 replies |
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Cover letter [PATCH 0/5] UserfaultFD: Extension for non cooperative uffd usage (v2)
Hi,
This set is to address the issues that appear in userfaultfd usage scenarios when the task monitoring the uffd and the mm-owner do not cooperate to each other on VM changes such as remaps, madvises and fork()-s.
This is the re-based set on the recent userfaultfd branch, two major changes are:
* No need in separate API version, the uffd_msg introduced in the current code and UFFD_API ioctl are enough for the needed extentions
* Two events added -- for mremap() and madvise() MADV_DONTNEED
More details about the particular events are in patches 3 trough 4. Comments and suggestion are warmly welcome :)
The v1 discussion thread is here: https://lkml.org/lkml/2015/3/18/729
Thanks,
Pavel
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