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On 7/23/19 11:17 PM, Christoph Hellwig wrote: > On Tue, Jul 23, 2019 at 09:25:06PM -0700, john.hubbard at gmail.com wrote: >> * Store, in the iov_iter, a "came from gup (get_user_pages)" parameter. >> Then, use the new iov_iter_get_pages_use_gup() to retrieve it when >> it is time to release the pages. That allows choosing between put_page() >> and put_user_page*(). >> >> * Pass in one more piece of information to bio_release_pages: a "from_gup" >> parameter. Similar use as abo...

On 7/23/19 11:17 PM, Christoph Hellwig wrote: > On Tue, Jul 23, 2019 at 09:25:06PM -0700, john.hubbard at gmail.com wrote: >> * Store, in the iov_iter, a "came from gup (get_user_pages)" parameter. >> Then, use the new iov_iter_get_pages_use_gup() to retrieve it when >> it is time to release the pages. That allows choosing between put_page() >> and put_user_page*(). >> >> * Pass in one more piece of information to bio_release_pages: a "from_gup" >> parameter. Similar use as abo...

On Tue, Jul 23, 2019 at 09:25:06PM -0700, john.hubbard at gmail.com wrote: > * Store, in the iov_iter, a "came from gup (get_user_pages)" parameter. > Then, use the new iov_iter_get_pages_use_gup() to retrieve it when > it is time to release the pages. That allows choosing between put_page() > and put_user_page*(). > > * Pass in one more piece of information to bio_release_pages: a "from_gup" > parameter. Similar use as above. > > * Ch...

...PM -0700, John Hubbard wrote: > On 7/23/19 11:17 PM, Christoph Hellwig wrote: > > On Tue, Jul 23, 2019 at 09:25:06PM -0700, john.hubbard at gmail.com wrote: > >> * Store, in the iov_iter, a "came from gup (get_user_pages)" parameter. > >> Then, use the new iov_iter_get_pages_use_gup() to retrieve it when > >> it is time to release the pages. That allows choosing between put_page() > >> and put_user_page*(). > >> > >> * Pass in one more piece of information to bio_release_pages: a "from_gup" > >> para...

This is something I've been working on: Reworking inspection so it's not a big mess of ad hoc C code, but instead uses a well-defined domain-specific language to describe how we inspect guests. The best introduction to this is the manual page, which I include below (it's also included in patch 2/3). Rich. ---------------------------------------------------------------------- NAME

...d alone. Testing: not much beyond build and boot testing has been done yet. And I'm not set up to even exercise all of it (especially the IB parts) at run time. Anyway, changes here are: * Store, in the iov_iter, a "came from gup (get_user_pages)" parameter. Then, use the new iov_iter_get_pages_use_gup() to retrieve it when it is time to release the pages. That allows choosing between put_page() and put_user_page*(). * Pass in one more piece of information to bio_release_pages: a "from_gup" parameter. Similar use as above. * Change the block layer, and several f...

...d alone. Testing: not much beyond build and boot testing has been done yet. And I'm not set up to even exercise all of it (especially the IB parts) at run time. Anyway, changes here are: * Store, in the iov_iter, a "came from gup (get_user_pages)" parameter. Then, use the new iov_iter_get_pages_use_gup() to retrieve it when it is time to release the pages. That allows choosing between put_page() and put_user_page*(). * Pass in one more piece of information to bio_release_pages: a "from_gup" parameter. Similar use as above. * Change the block layer, and several f...

Previously posted: https://www.redhat.com/archives/libguestfs/2015-December/msg00038.html Inspection now really succeeds on a small number of simple guests. To test it out: $ ./run guestfish -v -x -a /tmp/centos-6.img ><fs> run ><fs> debug sh "guestfs-inspection --verbose" Rich.

This is a more working version. Inspection (partially) succeeds on a real guest this time :-) You can test it out on a real guest (in this case, a CentOS disk image located at /tmp/centos-6.img) by doing: $ ./run guestfish -v -x -a /tmp/centos-6.img ><fs> run ><fs> debug sh "guestfs-inspection --verbose" which will print lots of debugging, and at the end the

For background on this change, see: https://rwmj.wordpress.com/2015/12/06/inspection-now-with-added-prolog/ v2 was previously posted here: https://www.redhat.com/archives/libguestfs/2015-December/msg00038.html To test this patch series on a real guest, you can do: $ ./run guestfish -v -x -a /var/tmp/centos-6.img ><fs> run ><fs> debug sh "guestfs-inspection