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linux-next/mm
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Jason Gunthorpe be957c886d mm/hmm: make hmm_range_fault return 0 or -1 
hmm_vma_walk->last is supposed to be updated after every write to the
pfns, so that it can be returned by hmm_range_fault(). However, this is
not done consistently. Fortunately nothing checks the return code of
hmm_range_fault() for anything other than error.

More importantly last must be set before returning -EBUSY as it is used to
prevent reading an output pfn as an input flags when the loop restarts.

For clarity and simplicity make hmm_range_fault() return 0 or -ERRNO. Only
set last when returning -EBUSY.

Link: https://lore.kernel.org/r/2-v2-b4e84f444c7d+24f57-hmm_no_flags_jgg@mellanox.com
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Tested-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-05-11 10:47:29 -03:00
..
kasan
kasan: unset panic_on_warn before calling panic()
2020-04-07 10:43:44 -07:00
backing-dev.c
blkcg: rename blkcg->cgwb_refcnt to ->online_pin and always use it
2020-04-01 14:56:42 -06:00
balloon_compaction.c
mm/balloon_compaction: suppress allocation warnings
2019-09-04 07:42:01 -04:00
cleancache.c
Driver Core and debugfs changes for 5.3-rc1
2019-07-12 12:24:03 -07:00
cma_debug.c
mm/cma_debug.c: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops
2019-12-01 12:59:09 -08:00
cma.c
mm: cma: NUMA node interface
2020-04-10 15:36:21 -07:00
cma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compaction.c
mm/compaction: add missing annotation for compact_lock_irqsave
2020-04-07 10:43:41 -07:00
debug_page_ref.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug.c
mm: dump_page(): additional diagnostics for huge pinned pages
2020-04-02 09:35:27 -07:00
dmapool.c
mm/dmapool.c: micro-optimisation remove unnecessary branch
2020-04-07 10:43:42 -07:00
early_ioremap.c
mm/early_ioremap.c: use %pa to print resource_size_t variables
2020-01-31 10:30:38 -08:00
fadvise.c
fs: Export generic_fadvise()
2019-08-30 22:43:58 -07:00
failslab.c
mm/failslab.c: by default, do not fail allocations with direct reclaim only
2019-07-12 11:05:43 -07:00
filemap.c
mm: huge tmpfs: try to split_huge_page() when punching hole
2020-04-07 10:43:41 -07:00
frame_vector.c
mm: untag user pointers in get_vaddr_frames
2019-09-25 17:51:41 -07:00
frontswap.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482
2019-06-19 17:09:52 +02:00
gup_benchmark.c
mm/gup_benchmark: support pin_user_pages() and related calls
2020-04-02 09:35:27 -07:00
gup.c
mm, gup: return EINTR when gup is interrupted by fatal signals
2020-04-21 11:11:55 -07:00
highmem.c
mm, x86/mm: Untangle address space layout definitions from basic pgtable type definitions
2019-12-10 10:12:55 +01:00
hmm.c
mm/hmm: make hmm_range_fault return 0 or -1
2020-05-11 10:47:29 -03:00
huge_memory.c
userfaultfd: wp: support swap and page migration
2020-04-07 10:43:39 -07:00
hugetlb_cgroup.c
mm: use fallthrough;
2020-04-07 10:43:41 -07:00
hugetlb.c
mm/hugetlb: fix a addressing exception caused by huge_pte_offset
2020-04-21 11:11:55 -07:00
hwpoison-inject.c
mm/hwpoison-inject: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops
2019-12-01 12:59:09 -08:00
init-mm.c
mm/init-mm.c: include <linux/mman.h> for vm_committed_as_batch
2019-10-19 06:32:32 -04:00
internal.h
mm: add function __putback_isolated_page
2020-04-07 10:43:38 -07:00
interval_tree.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 248
2019-06-19 17:09:08 +02:00
Kconfig
libnvdimm for 5.7
2020-04-08 21:03:40 -07:00
Kconfig.debug
mm: add generic ptdump
2020-02-04 03:05:25 +00:00
khugepaged.c
khugepaged: skip collapse if uffd-wp detected
2020-04-07 10:43:39 -07:00
kmemleak-test.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
kmemleak.c
mm/kmemleak.c: use address-of operator on section symbols
2020-04-02 09:35:26 -07:00
ksm.c
mm/ksm: fix NULL pointer dereference when KSM zero page is enabled
2020-04-21 11:11:55 -07:00
list_lru.c
mm: use fallthrough;
2020-04-07 10:43:41 -07:00
maccess.c
uaccess: Add strict non-pagefault kernel-space read function
2019-11-02 12:39:12 -07:00
madvise.c
mm: check that mm is still valid in madvise()
2020-04-24 13:28:03 -07:00
Makefile
mm: introduce Reported pages
2020-04-07 10:43:38 -07:00
mapping_dirty_helpers.c
mm/mapping_dirty_helpers: update huge page-table entry callbacks
2020-04-02 09:35:29 -07:00
memblock.c
mm: cma: NUMA node interface
2020-04-10 15:36:21 -07:00
memcontrol.c
mm, memcg: do not high throttle allocators based on wraparound
2020-04-10 15:36:20 -07:00
memfd.c
mm: page cache: store only head pages in i_pages
2019-09-24 15:54:08 -07:00
memory_hotplug.c
mm/memory_hotplug: add pgprot_t to mhp_params
2020-04-10 15:36:21 -07:00
memory-failure.c
mm: code cleanup for MADV_FREE
2020-04-07 10:43:38 -07:00
memory.c
mm/memory.c: add vm_insert_pages()
2020-04-10 15:36:21 -07:00
mempolicy.c
libnvdimm for 5.7
2020-04-08 21:03:40 -07:00
mempool.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
memremap.c
mm/memremap: set caching mode for PCI P2PDMA memory to WC
2020-04-10 15:36:21 -07:00
memtest.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
migrate.c
userfaultfd: wp: support swap and page migration
2020-04-07 10:43:39 -07:00
mincore.c
mm: pagewalk: add 'depth' parameter to pte_hole
2020-02-04 03:05:25 +00:00
mlock.c
mm: untag user pointers passed to memory syscalls
2019-09-25 17:51:41 -07:00
mm_init.c
mm/mm_init.c: clean code. Use BUILD_BUG_ON when comparing compile time constant
2020-04-07 10:43:41 -07:00
mmap.c
mm/vma: introduce VM_ACCESS_FLAGS
2020-04-10 15:36:21 -07:00
mmu_context.c
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
mmu_gather.c
asm-generic/tlb: provide MMU_GATHER_TABLE_FREE
2020-02-04 03:05:26 +00:00
mmu_notifier.c
mm/mmu_notifier: silence PROVE_RCU_LIST warnings
2020-03-21 18:56:06 -07:00
mmzone.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mprotect.c
mm/vma: introduce VM_ACCESS_FLAGS
2020-04-10 15:36:21 -07:00
mremap.c
mm: Fix MREMAP_DONTUNMAP accounting on VMA merge
2020-04-19 14:07:10 -07:00
msync.c
mm: untag user pointers passed to memory syscalls
2019-09-25 17:51:41 -07:00
nommu.c
x86/mm: split vmalloc_sync_all()
2020-03-21 18:56:06 -07:00
oom_kill.c
mm, oom: dump stack of victim when reaping failed
2020-01-31 10:30:38 -08:00
page_alloc.c
mm/page_alloc: make pcpu_drain_mutex and pcpu_drain static
2020-04-10 15:36:21 -07:00
page_counter.c
mm, memcg: prevent memory.min load/store tearing
2020-04-02 09:35:29 -07:00
page_ext.c
mm/page_ext.c: drop pfn_present() check when onlining
2020-04-07 10:43:40 -07:00
page_idle.c
mm/page_idle.c: fix oops because end_pfn is larger than max_pfn
2019-06-29 16:43:45 +08:00
page_io.c
fs: Enable bmap() function to properly return errors
2020-02-03 08:05:37 -05:00
page_isolation.c
mm: add function __putback_isolated_page
2020-04-07 10:43:38 -07:00
page_owner.c
mm/page_owner: don't access uninitialized memmaps when reading /proc/pagetypeinfo
2019-10-19 06:32:31 -04:00
page_poison.c
mm/page_poison.c: fix a typo in a comment
2019-09-24 15:54:08 -07:00
page_reporting.c
mm/page_reporting: add budget limit on how many pages can be reported per pass
2020-04-07 10:43:39 -07:00
page_reporting.h
mm: introduce Reported pages
2020-04-07 10:43:38 -07:00
page_vma_mapped.c
mm/page_vma_mapped.c: explicitly compare pfn for normal, hugetlbfs and THP page
2020-01-31 10:30:38 -08:00
page-writeback.c
mm/gup/writeback: add callbacks for inaccessible pages
2020-04-02 09:35:27 -07:00
pagewalk.c
x86: mm: avoid allocating struct mm_struct on the stack
2020-02-04 03:05:25 +00:00
percpu-internal.h
percpu: convert chunk hints to be based on pcpu_block_md
2019-03-13 12:25:31 -07:00
percpu-km.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
percpu-stats.c
percpu: update copyright emails to dennis@kernel.org
2020-04-01 10:09:12 -07:00
percpu-vm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
percpu.c
percpu: update copyright emails to dennis@kernel.org
2020-04-01 10:09:12 -07:00
pgtable-generic.c
asm-generic/mm: stub out p{4,u}d_clear_bad() if __PAGETABLE_P{4,U}D_FOLDED
2019-12-01 06:29:19 -08:00
process_vm_access.c
mm: docs: Fix a comment in process_vm_rw_core
2020-03-25 10:04:01 -05:00
ptdump.c
x86: mm: avoid allocating struct mm_struct on the stack
2020-02-04 03:05:25 +00:00
readahead.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
rmap.c
mm: prevent a warning when casting void* -> enum
2020-04-07 10:43:41 -07:00
rodata_test.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
shmem.c
mm: shmem: disable interrupt when acquiring info->lock in userfaultfd_copy path
2020-04-21 11:11:56 -07:00
shuffle.c
mm: adjust shuffle code to allow for future coalescing
2020-04-07 10:43:38 -07:00
shuffle.h
mm: adjust shuffle code to allow for future coalescing
2020-04-07 10:43:38 -07:00
slab_common.c
mm, slab_common: fix a typo in comment "eariler"->"earlier"
2020-04-10 15:36:20 -07:00
slab.c
mm, debug_pagealloc: don't rely on static keys too early
2020-01-13 18:19:02 -08:00
slab.h
mm: kmem: rename (__)memcg_kmem_(un)charge_memcg() to __memcg_kmem_(un)charge()
2020-04-02 09:35:28 -07:00
slob.c
mm, sl[aou]b: guarantee natural alignment for kmalloc(power-of-two)
2019-10-07 15:47:20 -07:00
slub.c
slub: avoid redzone when choosing freepointer location
2020-04-21 11:11:55 -07:00
sparse-vmemmap.c
mm/sparsemem: convert kmalloc_section_memmap() to populate_section_memmap()
2019-07-18 17:08:07 -07:00
sparse.c
mm/sparse.c: move subsection_map related functions together
2020-04-07 10:43:40 -07:00
swap_cgroup.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swap_slots.c
mm/swap_slots.c: assign|reset cache slot by value directly
2020-04-02 09:35:27 -07:00
swap_state.c
mm/swap_state.c: use the same way to count page in [add_to|delete_from]_swap_cache
2020-04-02 09:35:28 -07:00
swap.c
mm: huge tmpfs: try to split_huge_page() when punching hole
2020-04-07 10:43:41 -07:00
swapfile.c
proc: faster open/read/close with "permanent" files
2020-04-07 10:43:42 -07:00
truncate.c
mm/thp: allow dropping THP from page cache
2019-10-19 06:32:33 -04:00
usercopy.c
usercopy: Avoid HIGHMEM pfn warning
2019-09-17 15:20:17 -07:00
userfaultfd.c
userfaultfd: wp: support write protection for userfault vma range
2020-04-07 10:43:39 -07:00
util.c
mm/mmap.c: rb_parent is not necessary in __vma_link_list()
2019-12-01 06:29:19 -08:00
vmacache.c
mm: get rid of vmacache_flush_all() entirely
2018-09-13 15:18:04 -10:00
vmalloc.c
vmalloc: fix remap_vmalloc_range() bounds checks
2020-04-21 11:11:56 -07:00
vmpressure.c
mm: vmpressure: use mem_cgroup_is_root API
2020-04-02 09:35:31 -07:00
vmscan.c
mm: code cleanup for MADV_FREE
2020-04-07 10:43:38 -07:00
vmstat.c
mm, thp: track fallbacks due to failed memcg charges separately
2020-04-07 10:43:38 -07:00
workingset.c
mm: vmscan: detect file thrashing at the reclaim root
2019-12-01 12:59:07 -08:00
z3fold.c
mm/z3fold.c: do not include rwlock.h directly
2020-03-06 07:06:09 -06:00
zbud.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
zpool.c
zpool: add malloc_support_movable to zpool_driver
2019-09-24 15:54:12 -07:00
zsmalloc.c
mm: use fallthrough;
2020-04-07 10:43:41 -07:00
zswap.c
mm/zswap: allow setting default status, compressor and allocator in Kconfig
2020-04-07 10:43:41 -07:00