search for: put_user_pag

On 7/24/19 12:25 PM, john.hubbard at gmail.com wrote: > From: John Hubbard <jhubbard at nvidia.com> > > Hi, > > This is mostly Jerome's work, converting the block/bio and related areas > to call put_user_page*() instead of put_page(). Because I've changed > Jerome's patches, in some cases significantly, I'd like to get his > feedback before we actually leave him listed as the author (he might > want to disown some or all of these). > Could you add some background to the commit...

From: John Hubbard <jhubbard at nvidia.com> Hi, This is mostly Jerome's work, converting the block/bio and related areas to call put_user_page*() instead of put_page(). Because I've changed Jerome's patches, in some cases significantly, I'd like to get his feedback before we actually leave him listed as the author (he might want to disown some or all of these). I added a new patch, in order to make this work with Christoph H...

From: John Hubbard <jhubbard at nvidia.com> Hi, This is mostly Jerome's work, converting the block/bio and related areas to call put_user_page*() instead of put_page(). Because I've changed Jerome's patches, in some cases significantly, I'd like to get his feedback before we actually leave him listed as the author (he might want to disown some or all of these). I added a new patch, in order to make this work with Christoph H...

From: J?r?me Glisse <jglisse at redhat.com> For pages that were retained via get_user_pages*(), release those pages via the new put_user_page*() routines, instead of via put_page(). This is part a tree-wide conversion, as described in commit fc1d8e7cca2d ("mm: introduce put_user_page*(), placeholder versions"). Changes from J?r?me's original patch: * Changed a WARN_ON to a BUG_ON. Signed-off-by: J?r?me Glisse <jglis...

On Tue, Jul 23, 2019 at 09:25:13PM -0700, john.hubbard at gmail.com wrote: > From: J?r?me Glisse <jglisse at redhat.com> > > For pages that were retained via get_user_pages*(), release those pages > via the new put_user_page*() routines, instead of via put_page(). > > This is part a tree-wide conversion, as described in commit fc1d8e7cca2d > ("mm: introduce put_user_page*(), placeholder versions"). > > Changes from J?r?me's original patch: > > * Changed a WARN_ON to a BUG_ON. >...

...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. > > * Change the block layer, and several file systems, to use > put_user_page*(). I think we can do this in a simple and better way. We have 5...

...ohn.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. >> >> * Change the block layer, and several file systems, to use >> put_user_page*(). > > I think we can do this in a si...

...ohn.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. >> >> * Change the block layer, and several file systems, to use >> put_user_page*(). > > I think we can do this in a si...

....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. > >> > >> * Change the block layer, and several file systems, to use > >> put_user_page*(). > >...