search for: dickins

...> If you have another concern, feel free to say. I don't for now :) [...] > Cc: Rik van Riel <riel at redhat.com> > Cc: Vlastimil Babka <vbabka at suse.cz> > Cc: Joonsoo Kim <iamjoonsoo.kim at lge.com> > Cc: Mel Gorman <mgorman at suse.de> > Cc: Hugh Dickins <hughd at google.com> > Cc: Rafael Aquini <aquini at redhat.com> > Cc: virtualization at lists.linux-foundation.org > Cc: Jonathan Corbet <corbet at lwn.net> > Cc: John Einar Reitan <john.reitan at foss.arm.com> > Cc: dri-devel at lists.freedesktop.org > Cc...

...> If you have another concern, feel free to say. I don't for now :) [...] > Cc: Rik van Riel <riel at redhat.com> > Cc: Vlastimil Babka <vbabka at suse.cz> > Cc: Joonsoo Kim <iamjoonsoo.kim at lge.com> > Cc: Mel Gorman <mgorman at suse.de> > Cc: Hugh Dickins <hughd at google.com> > Cc: Rafael Aquini <aquini at redhat.com> > Cc: virtualization at lists.linux-foundation.org > Cc: Jonathan Corbet <corbet at lwn.net> > Cc: John Einar Reitan <john.reitan at foss.arm.com> > Cc: dri-devel at lists.freedesktop.org > Cc...

...ead in put_page. I had an idea of checking for count==1 in putback_lru_page() which would take the put_page() shortcut from there. But maybe it can't be done nicely without races. > Cc: Vlastimil Babka <vbabka at suse.cz> > Cc: Mel Gorman <mgorman at suse.de> > Cc: Hugh Dickins <hughd at google.com> > Cc: Naoya Horiguchi <n-horiguchi at ah.jp.nec.com> > Signed-off-by: Minchan Kim <minchan at kernel.org> Acked-by: Vlastimil Babka <vbabka at suse.cz> Note in -next/after 4.6-rc1 this will need some rebasing though.

...ead in put_page. I had an idea of checking for count==1 in putback_lru_page() which would take the put_page() shortcut from there. But maybe it can't be done nicely without races. > Cc: Vlastimil Babka <vbabka at suse.cz> > Cc: Mel Gorman <mgorman at suse.de> > Cc: Hugh Dickins <hughd at google.com> > Cc: Naoya Horiguchi <n-horiguchi at ah.jp.nec.com> > Signed-off-by: Minchan Kim <minchan at kernel.org> Acked-by: Vlastimil Babka <vbabka at suse.cz> Note in -next/after 4.6-rc1 this will need some rebasing though.

...nd doesn't add overhead in put_page. > > Comment from Vlastimil > "Yeah, and compaction (perhaps also other migration users) has to drain > the lru pvec... Getting rid of this stuff is worth even by itself." > > Cc: Mel Gorman <mgorman at suse.de> > Cc: Hugh Dickins <hughd at google.com> > Cc: Naoya Horiguchi <n-horiguchi at ah.jp.nec.com> > Acked-by: Vlastimil Babka <vbabka at suse.cz> > Signed-off-by: Minchan Kim <minchan at kernel.org> [...] > @@ -974,28 +986,28 @@ static ICE_noinline int unmap_and_move(new_page_t get_n...

...nd doesn't add overhead in put_page. > > Comment from Vlastimil > "Yeah, and compaction (perhaps also other migration users) has to drain > the lru pvec... Getting rid of this stuff is worth even by itself." > > Cc: Mel Gorman <mgorman at suse.de> > Cc: Hugh Dickins <hughd at google.com> > Cc: Naoya Horiguchi <n-horiguchi at ah.jp.nec.com> > Acked-by: Vlastimil Babka <vbabka at suse.cz> > Signed-off-by: Minchan Kim <minchan at kernel.org> [...] > @@ -974,28 +986,28 @@ static ICE_noinline int unmap_and_move(new_page_t get_n...

...as a staging driver and is already part of Ubuntu and (unofficial) builds of Google Android: http://code.google.com/p/compcache/ - Fixed d-cache aliasing problem on ARM. Same problem found and fixed on MIPS and Sparc64. - Pointed out of-by-one error in swapon syscall implementation. Fixed by Hugh Dickins in 2.6.33. - Implemented experimental patch for CIFS VFS implementation on kernel 2.6.8 to send multiple read requests in parallel (http://linux-mm.org/NitinGupta) * Were you involved in other OpenSource development projects in the past? which, when and in what role? - Ported to kernel and ext...

...as a staging driver and is already part of Ubuntu and (unofficial) builds of Google Android: http://code.google.com/p/compcache/ - Fixed d-cache aliasing problem on ARM. Same problem found and fixed on MIPS and Sparc64. - Pointed out of-by-one error in swapon syscall implementation. Fixed by Hugh Dickins in 2.6.33. - Implemented experimental patch for CIFS VFS implementation on kernel 2.6.8 to send multiple read requests in parallel (http://linux-mm.org/NitinGupta) * Were you involved in other OpenSource development projects in the past? which, when and in what role? - Ported to kernel and ext...

...t; done nicely without races. I thought about it and we might do it via page_freeze_refs but what I want at this moment is to separte two semantic put and putback. ;-) > > >Cc: Vlastimil Babka <vbabka at suse.cz> > >Cc: Mel Gorman <mgorman at suse.de> > >Cc: Hugh Dickins <hughd at google.com> > >Cc: Naoya Horiguchi <n-horiguchi at ah.jp.nec.com> > >Signed-off-by: Minchan Kim <minchan at kernel.org> > > Acked-by: Vlastimil Babka <vbabka at suse.cz> > > Note in -next/after 4.6-rc1 this will need some rebasing though....

...rations if they are going to >> block on a disk transfer, or when we detect contention on the mmap_sem. >> >> [akpm at linux-foundation.org: remove ref to rwsem_is_contended()] >> Signed-off-by: Michel Lespinasse <walken at google.com> >> Cc: Hugh Dickins <hughd at google.com> >> Cc: Rik van Riel <riel at redhat.com> >> Cc: Peter Zijlstra <peterz at infradead.org> >> Cc: Nick Piggin <npiggin at kernel.dk> >> Cc: KOSAKI Motohiro <kosaki.motohiro at jp.fujitsu.com> >> Cc:...

...il > > > >"Yeah, and compaction (perhaps also other migration users) has to drain > > > >the lru pvec... Getting rid of this stuff is worth even by itself." > > > > > > > >Cc: Mel Gorman <mgorman at suse.de> > > > >Cc: Hugh Dickins <hughd at google.com> > > > >Cc: Naoya Horiguchi <n-horiguchi at ah.jp.nec.com> > > > >Acked-by: Vlastimil Babka <vbabka at suse.cz> > > > >Signed-off-by: Minchan Kim <minchan at kernel.org> > > > > > > [...] > > &...

...il > > > >"Yeah, and compaction (perhaps also other migration users) has to drain > > > >the lru pvec... Getting rid of this stuff is worth even by itself." > > > > > > > >Cc: Mel Gorman <mgorman at suse.de> > > > >Cc: Hugh Dickins <hughd at google.com> > > > >Cc: Naoya Horiguchi <n-horiguchi at ah.jp.nec.com> > > > >Acked-by: Vlastimil Babka <vbabka at suse.cz> > > > >Signed-off-by: Minchan Kim <minchan at kernel.org> > > > > > > [...] > > &...

...put and putback). If migration is successful, use put_page instead of putback_lru_page and use putback_lru_page only on failure. That makes code more readable and doesn't add overhead in put_page. Cc: Vlastimil Babka <vbabka at suse.cz> Cc: Mel Gorman <mgorman at suse.de> Cc: Hugh Dickins <hughd at google.com> Cc: Naoya Horiguchi <n-horiguchi at ah.jp.nec.com> Signed-off-by: Minchan Kim <minchan at kernel.org> --- mm/migrate.c | 49 ++++++++++++++++++++++++++++++------------------- 1 file changed, 30 insertions(+), 19 deletions(-) diff --git a/mm/migrate.c b/mm/m...

Hello List, Running 2.4.21-pre3-ac1 SMP with new quotas (usr and grp), this oops showed up while copying a large amount (about 50gigs, only 1.6 made it before the oops). I'm trying to reproduce as we speak. Unable to handle kernel NULL pointer dereference at virtual address 00000004 c0130956 *pde = 00000000 Oops: 0002 CPU: 0 EIP: 0010:[<c0130956>] Not tainted Using defaults

.... That makes code more readable and doesn't add overhead in put_page. Comment from Vlastimil "Yeah, and compaction (perhaps also other migration users) has to drain the lru pvec... Getting rid of this stuff is worth even by itself." Cc: Mel Gorman <mgorman at suse.de> Cc: Hugh Dickins <hughd at google.com> Cc: Naoya Horiguchi <n-horiguchi at ah.jp.nec.com> Acked-by: Vlastimil Babka <vbabka at suse.cz> Signed-off-by: Minchan Kim <minchan at kernel.org> --- mm/migrate.c | 50 +++++++++++++++++++++++++++++++------------------- 1 file changed, 31 insertions(...

...put_page. > > > >Comment from Vlastimil > >"Yeah, and compaction (perhaps also other migration users) has to drain > >the lru pvec... Getting rid of this stuff is worth even by itself." > > > >Cc: Mel Gorman <mgorman at suse.de> > >Cc: Hugh Dickins <hughd at google.com> > >Cc: Naoya Horiguchi <n-horiguchi at ah.jp.nec.com> > >Acked-by: Vlastimil Babka <vbabka at suse.cz> > >Signed-off-by: Minchan Kim <minchan at kernel.org> > > [...] > > >@@ -974,28 +986,28 @@ static ICE_noinline int...

On Thu, Jul 07, 2022 at 07:50:17PM -0700, Hugh Dickins wrote: > On Wed, 8 Jun 2022, Matthew Wilcox (Oracle) wrote: > > > Now that both callers have a folio, convert this function to > > take a folio & rename it. > > > > Signed-off-by: Matthew Wilcox (Oracle) <willy at infradead.org> > > Reviewed-by: Chris...

On Thu, Jul 07, 2022 at 07:50:17PM -0700, Hugh Dickins wrote: > On Wed, 8 Jun 2022, Matthew Wilcox (Oracle) wrote: > > > Now that both callers have a folio, convert this function to > > take a folio & rename it. > > > > Signed-off-by: Matthew Wilcox (Oracle) <willy at infradead.org> > > Reviewed-by: Chris...

...<fan.du@windriver.com> Fengguang Wu <fengguang.wu@intel.com> François CACHEREUL <f.cachereul@alphalink.fr> Greg Kroah-Hartman <gregkh@linuxfoundation.org> Hannes Frederic Sowa <hannes@stressinduktion.org> Herbert Xu <herbert@gondor.apana.org.au> Hugh Dickins <hughd@google.com> Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> James Ralston <james.d.ralston@intel.com> Jason Cooper <jason@lakedaemon.net> Jason Wang <jasowang@redhat.com> Jiri Benc <jbenc@redhat.com> Johannes Berg <johannes.berg@intel.com> Ju...

Greetings, I've dedusted the guest page hinting patches and ported them to todays upstream git tree. There is one reject if applied to 2.6.24-rc5-mm1 but that is easy to fix. The code stills works as expected on my test system. Our z/VM performance team recently published a report on guest page hinting vs. the ballooner approach on SLES10 for a farm of web servers. The code on SLES10 differs