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Stephen Wilson 5b52fc890b proc: allocate storage for numa_maps statistics once ... In show_numa_map() we collect statistics into a numa_maps structure. Since the number of NUMA nodes can be very large, this structure is not a candidate for stack allocation. Instead of going thru a kmalloc()+kfree() cycle each time show_numa_map() is invoked, perform the allocation just once when /proc/pid/numa_maps is opened. Performing the allocation when numa_maps is opened, and thus before a reference to the target tasks mm is taken, eliminates a potential stalemate condition in the oom-killer as originally described by Hugh Dickins: ... imagine what happens if the system is out of memory, and the mm we're looking at is selected for killing by the OOM killer: while we wait in __get_free_page for more memory, no memory is freed from the selected mm because it cannot reach exit_mmap while we hold that reference. Signed-off-by: Stephen Wilson <wilsons@start.ca> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Hugh Dickins <hughd@google.com> Cc: David Rientjes <rientjes@google.com> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		14 years ago
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9p	fs/9p: Fix error reported by coccicheck	14 years ago
adfs	Fix common misspellings	14 years ago
affs	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
afs	Fix common misspellings	14 years ago
autofs4	Fix common misspellings	14 years ago
befs	Fix common misspellings	14 years ago
bfs	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
btrfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	14 years ago
cachefiles	Fix common misspellings	14 years ago
ceph	ceph: do not use i_wrbuffer_ref as refcount for Fb cap	14 years ago
cifs	[CIFS] Fix to problem with getattr caused by invalidate simplification patch	14 years ago
coda	codafs: fix build break when CONFIG_PROC_SYSCTL=n	14 years ago
configfs	configfs: Fix race between configfs_readdir() and configfs_d_iput()	14 years ago
cramfs	cramfs: generate unique inode number for better inode cache usage	14 years ago
debugfs	debugfs: move to new strtobool	14 years ago
devpts	fs/devpts/inode.c: correctly check d_alloc_name() return code in devpts_pty_new()	14 years ago
dlm	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm	14 years ago
ecryptfs	eCryptfs: Flush dirty pages in setattr	14 years ago
efs	block: remove per-queue plugging	14 years ago
exofs	Fix common misspellings	14 years ago
exportfs	vfs: Add open by file handle support	14 years ago
ext2	ext2: fix error msg when mounting fs with too-large blocksize	14 years ago
ext3	ext3: Fix fs corruption when make_indexed_dir() fails	14 years ago
ext4	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4	14 years ago
fat	fat: Fix statfs->f_namelen	14 years ago
freevxfs	treewide: fix a few typos in comments	14 years ago
fscache	FS-Cache: Fix operation handling	14 years ago
fuse	fuse: fix oops in revalidate when called with NULL nameidata	14 years ago
gfs2	vmscan: change shrinker API by passing shrink_control struct	14 years ago
hfs	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
hfsplus	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
hostfs	switch hostfs	14 years ago
hpfs	HPFS: Remove unused variable	14 years ago
hppfs	fs: icache RCU free inodes	14 years ago
hugetlbfs	mm: Convert i_mmap_lock to a mutex	14 years ago
isofs	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
jbd	jbd: Fix comment to match the code in journal_start()	14 years ago
jbd2	jbd/jbd2: remove obsolete summarise_journal_usage.	14 years ago
jffs2	Fix common misspellings	14 years ago
jfs	Fix common misspellings	14 years ago
lockd	NLM: Fix "kernel BUG at fs/lockd/host.c:417!" or ".../host.c:283!"	14 years ago
logfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	14 years ago
minix	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
ncpfs	Fix common misspellings	14 years ago
nfs	vmscan: change shrinker API by passing shrink_control struct	14 years ago
nfs_common	Fix common misspellings	14 years ago
nfsd	treewide: fix a few typos in comments	14 years ago
nilfs2	nilfs2: use mark_buffer_dirty to mark btnode or meta data dirty	14 years ago
nls	…
notify	Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6	14 years ago
ntfs	Fix common misspellings	14 years ago
ocfs2	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	14 years ago
omfs	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
openpromfs	fs: icache RCU free inodes	14 years ago
partitions	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	14 years ago
proc	proc: allocate storage for numa_maps statistics once	14 years ago
pstore	pstore: fix pstore filesystem mount/remount issue	14 years ago
qnx4	block: remove per-queue plugging	14 years ago
quota	vmscan: change shrinker API by passing shrink_control struct	14 years ago
ramfs	ramfs: fix memleak on no-mmu arch	14 years ago
reiserfs	Fix common misspellings	14 years ago
romfs	fs: icache RCU free inodes	14 years ago
squashfs	treewide: fix a few typos in comments	14 years ago
sysfs	sysfs: remove "last sysfs file:" line from the oops messages	14 years ago
sysv	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
ubifs	UBIFS: switch to dynamic printks	14 years ago
udf	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
ufs	Merge branch 'master' into for-next	14 years ago
xfs	vmscan: change shrinker API by passing shrink_control struct	14 years ago
Kconfig	tmpfs: implement generic xattr support	14 years ago
Kconfig.binfmt	…
Makefile	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6	14 years ago
aio.c	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
anon_inodes.c	sanitize vfsmount refcounting changes	14 years ago
attr.c	Fix common misspellings	14 years ago
bad_inode.c	fs: provide rcu-walk aware permission i_ops	14 years ago
binfmt_aout.c	…
binfmt_elf.c	brk: COMPAT_BRK: fix detection of randomized brk	14 years ago
binfmt_elf_fdpic.c	…
binfmt_em86.c	…
binfmt_flat.c	CRED: Fix load_flat_shared_library() to initialise bprm correctly	14 years ago
binfmt_misc.c	…
binfmt_script.c	…
binfmt_som.c	…
bio-integrity.c	block: Require subsystems to explicitly allocate bio_set integrity mempool	14 years ago
bio.c	Fix common misspellings	14 years ago
block_dev.c	block: move bd_set_size() above rescan_partitions() in __blkdev_get()	14 years ago
buffer.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	14 years ago
char_dev.c	Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
compat.c	exec: unify do_execve/compat_do_execve code	14 years ago
compat_binfmt_elf.c	…
compat_ioctl.c	Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6	14 years ago
dcache.c	vmscan: change shrinker API by passing shrink_control struct	14 years ago
dcookies.c	…
direct-io.c	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
drop_caches.c	vmscan: change shrinker API by passing shrink_control struct	14 years ago
eventfd.c	Docbook: add fs/eventfd.c and fix typos in it	14 years ago
eventpoll.c	Fix common misspellings	14 years ago
exec.c	mm: mmu_gather rework	14 years ago
fcntl.c	userns: rename is_owner_or_cap to inode_owner_or_capable	14 years ago
fhandle.c	fs/fhandle.c: add <linux/personality.h> for ia64	14 years ago
fifo.c	Filesystem: fifo: Fixed coding style issue.	14 years ago
file.c	vfs: avoid large kmalloc()s for the fdtable	14 years ago
file_table.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	14 years ago
filesystems.c	fs: synchronize_rcu when unregister_filesystem success not failure	14 years ago
fs-writeback.c	Fix common misspellings	14 years ago
fs_struct.c	sanitize vfsmount refcounting changes	14 years ago
generic_acl.c	userns: rename is_owner_or_cap to inode_owner_or_capable	14 years ago
inode.c	vmscan: change shrinker API by passing shrink_control struct	14 years ago
internal.h	fs: move i_wb_list out from under inode_lock	14 years ago
ioctl.c	vfs: cleanup do_vfs_ioctl()	14 years ago
ioprio.c	…
libfs.c	pass default dentry_operations to mount_pseudo()	14 years ago
locks.c	Merge branch 'for-2.6.39' of git://linux-nfs.org/~bfields/linux	14 years ago
mbcache.c	vmscan: change shrinker API by passing shrink_control struct	14 years ago
mpage.c	fs: make mpage read/write_pages() plug	14 years ago
namei.c	VFS: move BUG_ON test for symlink nd->depth after current->link_count test	14 years ago
namespace.c	Revert "vfs: Export file system uuid via /proc/<pid>/mountinfo"	14 years ago
nfsctl.c	open-style analog of vfs_path_lookup()	14 years ago
no-block.c	…
open.c	fs: Use BUG_ON(!mnt) at dentry_open().	14 years ago
pipe.c	Fix broken "pipe: use event aware wakeups" optimization	14 years ago
pnode.c	fs: scale mntget/mntput	14 years ago
pnode.h	…
posix_acl.c	NFS: Prevent memory allocation failure in nfsacl_encode()	14 years ago
read_write.c	fix signedness mess in rw_verify_area() on 64bit architectures	14 years ago
read_write.h	…
readdir.c	…
select.c	select: remove unused MAX_SELECT_SECONDS	14 years ago
seq_file.c	…
signalfd.c	…
splice.c	Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
stack.c	…
stat.c	readlinkat(), fchownat() and fstatat() with empty relative pathnames	14 years ago
statfs.c	clean statfs-like syscalls up	14 years ago
super.c	VFS: trivial: fix comment on s_maxbytes value warning check	14 years ago
sync.c	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	14 years ago
timerfd.c	timerfd: Manage cancelable timers in timerfd	14 years ago
utimes.c	userns: rename is_owner_or_cap to inode_owner_or_capable	14 years ago
xattr.c	vfs: Pass setxattr(2) flags properly	14 years ago
xattr_acl.c	…