Displaying 20 results from an estimated 27 matches for "page_add_file_rmap".
2016 Jun 16
2
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...>> Sure.
>
> Thanks a lot!
>
>>
>> My driver has privately managed non LRU pages which gets mapped into user space
>> process page table through f_ops->mmap() and vmops->fault() which then updates
>> the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
>
> Hmm, page_add_file_rmap is not exported function. How does your driver can use it?
Its not using the function directly, I just re-iterated the sequence of functions
above. (do_set_pte -> page_add_file_rmap) gets called after we grab the page from
driver through (__do...
2016 Jun 16
2
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...>> Sure.
>
> Thanks a lot!
>
>>
>> My driver has privately managed non LRU pages which gets mapped into user space
>> process page table through f_ops->mmap() and vmops->fault() which then updates
>> the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
>
> Hmm, page_add_file_rmap is not exported function. How does your driver can use it?
Its not using the function directly, I just re-iterated the sequence of functions
above. (do_set_pte -> page_add_file_rmap) gets called after we grab the page from
driver through (__do...
2016 Jun 27
2
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...!
>>>
>>>>
>>>> My driver has privately managed non LRU pages which gets mapped into user space
>>>> process page table through f_ops->mmap() and vmops->fault() which then updates
>>>> the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
>>>
>>> Hmm, page_add_file_rmap is not exported function. How does your driver can use it?
>>
>> Its not using the function directly, I just re-iterated the sequence of functions
>> above. (do_set_pte -> page_add_file_rmap) gets called after w...
2016 Jun 27
2
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...!
>>>
>>>>
>>>> My driver has privately managed non LRU pages which gets mapped into user space
>>>> process page table through f_ops->mmap() and vmops->fault() which then updates
>>>> the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
>>>
>>> Hmm, page_add_file_rmap is not exported function. How does your driver can use it?
>>
>> Its not using the function directly, I just re-iterated the sequence of functions
>> above. (do_set_pte -> page_add_file_rmap) gets called after w...
2016 Jun 15
2
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...my TODO after landing this work.
>
> Could you share your usecase?
Sure.
My driver has privately managed non LRU pages which gets mapped into user space
process page table through f_ops->mmap() and vmops->fault() which then updates
the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
to note here is that the page->mapping eventually points to struct address_space
(file->f_mapping) which belongs to the character device file (created using mknod)
which we are using for establishing the mmap() regions in the user space.
Now as per this new framework, all th...
2016 Jun 15
2
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...my TODO after landing this work.
>
> Could you share your usecase?
Sure.
My driver has privately managed non LRU pages which gets mapped into user space
process page table through f_ops->mmap() and vmops->fault() which then updates
the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
to note here is that the page->mapping eventually points to struct address_space
(file->f_mapping) which belongs to the character device file (created using mknod)
which we are using for establishing the mmap() regions in the user space.
Now as per this new framework, all th...
2016 Jun 16
0
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...; Thanks a lot!
> >
> >>
> >> My driver has privately managed non LRU pages which gets mapped into user space
> >> process page table through f_ops->mmap() and vmops->fault() which then updates
> >> the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
> >
> > Hmm, page_add_file_rmap is not exported function. How does your driver can use it?
>
> Its not using the function directly, I just re-iterated the sequence of functions
> above. (do_set_pte -> page_add_file_rmap) gets called after we grab the page...
2016 Jun 28
0
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...>>>>
> >>>> My driver has privately managed non LRU pages which gets mapped into user space
> >>>> process page table through f_ops->mmap() and vmops->fault() which then updates
> >>>> the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
> >>>
> >>> Hmm, page_add_file_rmap is not exported function. How does your driver can use it?
> >>
> >> Its not using the function directly, I just re-iterated the sequence of functions
> >> above. (do_set_pte -> page_add_file_...
2007 Apr 18
0
[patch 7/9] Guest page hinting: minor fault optimization.
...nges of hva is the cost for the state transitions.
If the cost gets too big the whole concept of page state information
is in question. Therefore it is very important to avoid the state
transitions for minor faults. Why change the page state to stable in
find_get_page and back in page_add_anon_rmap/page_add_file_rmap if the
discarded pages can be handled by the discard fault handler? If the page
is in page/swap cache just map it even if it is already discarded. The
first access to the page will cause a discard fault which needs to be
able to deal with this kind of situation anyway because of races in the
memory...
2007 Apr 18
0
[patch 7/9] Guest page hinting: minor fault optimization.
...nges of hva is the cost for the state transitions.
If the cost gets too big the whole concept of page state information
is in question. Therefore it is very important to avoid the state
transitions for minor faults. Why change the page state to stable in
find_get_page and back in page_add_anon_rmap/page_add_file_rmap if the
discarded pages can be handled by the discard fault handler? If the page
is in page/swap cache just map it even if it is already discarded. The
first access to the page will cause a discard fault which needs to be
able to deal with this kind of situation anyway because of races in the
memory...
2016 Jun 16
0
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...ould you share your usecase?
>
> Sure.
Thanks a lot!
>
> My driver has privately managed non LRU pages which gets mapped into user space
> process page table through f_ops->mmap() and vmops->fault() which then updates
> the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
Hmm, page_add_file_rmap is not exported function. How does your driver can use it?
Do you use vm_insert_pfn?
What type your vma is? VM_PFNMMAP or VM_MIXEDMAP?
I want to make dummy driver to simulate your case.
It would be very helpful to implement/test pte-mapped non-lru page
mig...
2016 Jun 30
1
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...gt;>
>>>>>> My driver has privately managed non LRU pages which gets mapped into user space
>>>>>> process page table through f_ops->mmap() and vmops->fault() which then updates
>>>>>> the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
>>>>>
>>>>> Hmm, page_add_file_rmap is not exported function. How does your driver can use it?
>>>>
>>>> Its not using the function directly, I just re-iterated the sequence of functions
>>>> above. (do_set_pte ->...
2016 Jun 30
1
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
...gt;>
>>>>>> My driver has privately managed non LRU pages which gets mapped into user space
>>>>>> process page table through f_ops->mmap() and vmops->fault() which then updates
>>>>>> the file RMAP (page->mapping->i_mmap) through page_add_file_rmap(page). One thing
>>>>>
>>>>> Hmm, page_add_file_rmap is not exported function. How does your driver can use it?
>>>>
>>>> Its not using the function directly, I just re-iterated the sequence of functions
>>>> above. (do_set_pte ->...
2014 Aug 05
0
Stack dumps in use_block_rsv while rebalancing ("block rsv returned -28")
...th_fmt+0x46/0x50
[376007.682016] [<ffffffffa00d9d1d>] use_block_rsv+0xfd/0x1a0 [btrfs]
[376007.682024] [<ffffffffa00de687>] btrfs_alloc_free_block+0x57/0x220 [btrfs]
[376007.682027] [<ffffffff8178033c>] ? __do_page_fault+0x28c/0x550
[376007.682031] [<ffffffff8119749f>] ? page_add_file_rmap+0x6f/0xb0
[376007.682037] [<ffffffffa00c8a3c>] btrfs_copy_root+0xfc/0x2b0 [btrfs]
[376007.682041] [<ffffffff811c60b9>] ? memcg_check_events+0x29/0x50
[376007.682051] [<ffffffffa013a583>] ? create_reloc_root+0x33/0x2c0 [btrfs]
[376007.682061] [<ffffffffa013a743>] create_r...
2016 Jun 13
2
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
On 05/31/2016 05:31 AM, Minchan Kim wrote:
> @@ -791,6 +921,7 @@ static int __unmap_and_move(struct page *page, struct page *newpage,
> int rc = -EAGAIN;
> int page_was_mapped = 0;
> struct anon_vma *anon_vma = NULL;
> + bool is_lru = !__PageMovable(page);
>
> if (!trylock_page(page)) {
> if (!force || mode == MIGRATE_ASYNC)
> @@ -871,6 +1002,11 @@ static
2016 Jun 13
2
[PATCH v6v3 02/12] mm: migrate: support non-lru movable page migration
On 05/31/2016 05:31 AM, Minchan Kim wrote:
> @@ -791,6 +921,7 @@ static int __unmap_and_move(struct page *page, struct page *newpage,
> int rc = -EAGAIN;
> int page_was_mapped = 0;
> struct anon_vma *anon_vma = NULL;
> + bool is_lru = !__PageMovable(page);
>
> if (!trylock_page(page)) {
> if (!force || mode == MIGRATE_ASYNC)
> @@ -871,6 +1002,11 @@ static
2020 Oct 01
8
[RFC PATCH v3 0/2] mm: remove extra ZONE_DEVICE struct page refcount
...vmf_insert_mixed(pfn)
__vm_insert_mixed()
if (!IS_ENABLED(CONFIG_ARCH_HAS_PTE_SPECIAL) &&
!pfn_t_devmap(pfn) && pfn_t_valid(pfn))
insert_page()
get_page(page) // XXX would trigger VM_BUG_ON_PAGE()
page_add_file_rmap()
set_pte_at()
else
insert_pfn()
pte_mkdevmap()
set_pte_at()
Should pmem set the page reference count to one before inserting the
pfn into the page tables (and decrement when removing devmap PTEs)?
What about MEMORY_DEVICE_G...
2007 Apr 18
0
[patch 6/9] Guest page hinting: writable page table entries.
...1 12:49:33.000000000 +0200
+++ linux-2.6-patched/mm/fremap.c 2006-09-01 12:50:24.000000000 +0200
@@ -80,6 +80,7 @@ int install_page(struct mm_struct *mm, s
flush_icache_page(vma, page);
pte_val = mk_pte(page, prot);
+ page_check_writable(page, pte_val);
set_pte_at(mm, addr, pte, pte_val);
page_add_file_rmap(page);
update_mmu_cache(vma, addr, pte_val);
diff -urpN linux-2.6/mm/memory.c linux-2.6-patched/mm/memory.c
--- linux-2.6/mm/memory.c 2006-09-01 12:50:24.000000000 +0200
+++ linux-2.6-patched/mm/memory.c 2006-09-01 12:50:24.000000000 +0200
@@ -1558,6 +1558,7 @@ static int do_wp_page(struct mm_str...
2007 Apr 18
0
[patch 6/9] Guest page hinting: writable page table entries.
...1 12:49:33.000000000 +0200
+++ linux-2.6-patched/mm/fremap.c 2006-09-01 12:50:24.000000000 +0200
@@ -80,6 +80,7 @@ int install_page(struct mm_struct *mm, s
flush_icache_page(vma, page);
pte_val = mk_pte(page, prot);
+ page_check_writable(page, pte_val);
set_pte_at(mm, addr, pte, pte_val);
page_add_file_rmap(page);
update_mmu_cache(vma, addr, pte_val);
diff -urpN linux-2.6/mm/memory.c linux-2.6-patched/mm/memory.c
--- linux-2.6/mm/memory.c 2006-09-01 12:50:24.000000000 +0200
+++ linux-2.6-patched/mm/memory.c 2006-09-01 12:50:24.000000000 +0200
@@ -1558,6 +1558,7 @@ static int do_wp_page(struct mm_str...
2007 Jun 28
6
[patch 0/6] resend: guest page hinting version 5.
Greetings,
after Carsten pitched CMM2 on the kvm mini summit here is a repost
of version 5 of the guest page hinting patches. The code is still
the same but has been adapted to the latest git level.
--
blue skies,
Martin.
"Reality continues to ruin my life." - Calvin.