Konstantin Khlebnikov 229ff23549 shmem: update memory reservation on truncate ... A shared anonymous mapping created without MAP_NORESERVE holds memory reservation for whole range of shmem segment. Usually there is no way to change its size, but /proc/<pid>/map_files/... (available if CONFIG_CHECKPOINT_RESTORE=y) allows that. This patch adjusts the memory reservation in shmem_setattr(). Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Change-Id: Ibaf48bed2a1eada5ffa96e550b7f1549d569e1b6		2020-12-23 16:15:47 +03:00
..
backing-dev.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
bootmem.c
bounce.c
cleancache.c
compaction.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap.c	lib/radix-tree.c: make radix_tree_node_alloc() work correctly within interrupt	2020-12-07 21:02:05 +03:00
filemap_xip.c	mm: kill vma flag VM_CAN_NONLINEAR	2020-11-29 16:11:40 +03:00
fremap.c	mm: kill vma flag VM_CAN_NONLINEAR	2020-11-29 16:11:40 +03:00
highmem.c
huge_memory.c
hugetlb.c
hwpoison-inject.c
init-mm.c
internal.h	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
Kconfig	BACKPORT: mm/zsmalloc: add statistics support	2018-01-01 21:27:09 +03:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
maccess.c
madvise.c	mm/fs: route MADV_REMOVE to FALLOC_FL_PUNCH_HOLE	2020-12-07 21:00:58 +03:00
Makefile	BACKPORT: mm/zpool: implement common zpool api to zbud/zsmalloc	2018-01-01 21:27:00 +03:00
memblock.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
memcontrol.c	shmem: replace page if mapping excludes its zone	2020-12-07 20:57:06 +03:00
memory-failure.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
memory.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
memory_hotplug.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
mempolicy.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
mempool.c
migrate.c	BACKPORT: Sanitize 'move_pages()' permission checks	2018-01-13 17:13:40 +03:00
mincore.c	swap: make each swap partition have one address_space	2018-01-01 22:02:05 +03:00
mlock.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
mm_init.c
mmap.c	mm: allow drivers to prevent new writable mappings	2020-12-07 21:08:09 +03:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c
nommu.c	mm: kill vma flag VM_CAN_NONLINEAR	2020-11-29 16:11:40 +03:00
oom_kill.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
page-writeback.c
page_alloc.c	mm/page_alloc.c: use '__paginginit' instead of '__init'	2017-12-27 17:13:39 +03:00
page_cgroup.c
page_io.c
page_isolation.c
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c
prio_tree.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c
shmem.c	shmem: update memory reservation on truncate	2020-12-23 16:15:47 +03:00
slab.c
slob.c
slub.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
sparse-vmemmap.c
sparse.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
swap.c	swap: make each swap partition have one address_space	2018-01-01 22:02:05 +03:00
swap_state.c	mm: allow drivers to prevent new writable mappings	2020-12-07 21:08:09 +03:00
swapfile.c	vfs: make path_openat take a struct filename pointer	2018-12-07 22:28:48 +04:00
thrash.c
truncate.c	mm/fs: remove truncate_range	2020-12-07 20:57:30 +03:00
util.c	swap: make each swap partition have one address_space	2018-01-01 22:02:05 +03:00
vmalloc.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
vmscan.c	mm: new shrinker API	2020-11-29 16:11:30 +03:00
vmstat.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
zpool.c	BACKPORT: mm/zpool: add name argument to create zpool	2018-01-01 21:27:09 +03:00
zsmalloc.c	UPSTREAM: zsmalloc: fix a null pointer dereference in destroy_handle_cache()	2018-01-01 21:27:14 +03:00