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Mikulas Patocka a09a79f668 Don't lock guardpage if the stack is growing up 
Linux kernel excludes guard page when performing mlock on a VMA with
down-growing stack. However, some architectures have up-growing stack
and locking the guard page should be excluded in this case too.

This patch fixes lvm2 on PA-RISC (and possibly other architectures with
up-growing stack). lvm2 calculates number of used pages when locking and
when unlocking and reports an internal error if the numbers mismatch.

[ Patch changed fairly extensively to also fix /proc/<pid>/maps for the
  grows-up case, and to move things around a bit to clean it all up and
  share the infrstructure with the /proc bits.

  Tested on ia64 that has both grow-up and grow-down segments  - Linus ]

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Tested-by: Tony Luck <tony.luck@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09 16:22:07 -07:00
..
9p fs/9p: Fix error reported by coccicheck 2011-04-15 15:26:14 -05:00
adfs Fix common misspellings 2011-03-31 11:26:23 -03:00
affs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
afs Fix common misspellings 2011-03-31 11:26:23 -03:00
autofs4 Fix common misspellings 2011-03-31 11:26:23 -03:00
befs Fix common misspellings 2011-03-31 11:26:23 -03:00
bfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
btrfs Revert wrong fixes for common misspellings 2011-04-26 23:31:11 -07:00
cachefiles Fix common misspellings 2011-03-31 11:26:23 -03:00
ceph ceph: do not call __mark_dirty_inode under i_lock 2011-05-04 12:56:45 -07:00
cifs cifs: handle errors from coalesce_t2 2011-05-03 03:42:15 +00:00
coda codafs: fix build break when CONFIG_PROC_SYSCTL=n 2011-03-25 17:45:16 -07:00
configfs Fix common misspellings 2011-03-31 11:26:23 -03:00
cramfs
debugfs debugfs: Fix filesystem reference counting on debugfs_remove() failure 2011-02-18 08:07:18 -08:00
devpts fs/devpts/inode.c: correctly check d_alloc_name() return code in devpts_pty_new() 2011-03-22 17:44:17 -07:00
dlm Fix common misspellings 2011-03-31 11:26:23 -03:00
ecryptfs eCryptfs: Flush dirty pages in setattr 2011-04-25 18:49:46 -05:00
efs block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
exofs Fix common misspellings 2011-03-31 11:26:23 -03:00
exportfs vfs: Add open by file handle support 2011-03-15 02:21:44 -04:00
ext2 Fix common misspellings 2011-03-31 11:26:23 -03:00
ext3 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 2011-04-08 07:35:17 -07:00
ext4 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2011-04-11 15:45:47 -07:00
fat Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
freevxfs Fix common misspellings 2011-03-31 11:26:23 -03:00
fscache
fuse Fix common misspellings 2011-03-31 11:26:23 -03:00
gfs2 add hlist_bl_lock/unlock helpers 2011-04-25 18:14:10 -07:00
hfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
hfsplus Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
hostfs
hpfs HPFS: Remove unused variable 2011-05-09 09:04:24 -07:00
hppfs
hugetlbfs mm: hugetlbfs: change remove_from_page_cache 2011-03-22 17:44:02 -07:00
isofs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
jbd Fix common misspellings 2011-03-31 11:26:23 -03:00
jbd2 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2011-04-11 15:45:47 -07:00
jffs2 Fix common misspellings 2011-03-31 11:26:23 -03:00
jfs Fix common misspellings 2011-03-31 11:26:23 -03:00
lockd NLM: Fix "kernel BUG at fs/lockd/host.c:417!" or ".../host.c:283!" 2011-01-25 15:24:47 -05:00
logfs logfs: initialize superblock entries earlier 2011-05-03 16:10:25 -07:00
minix Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ncpfs Fix common misspellings 2011-03-31 11:26:23 -03:00
nfs nfs: don't lose MS_SYNCHRONOUS on remount of noac mount 2011-04-27 16:20:01 -04:00
nfs_common Fix common misspellings 2011-03-31 11:26:23 -03:00
nfsd Open with O_CREAT flag set fails to open existing files on non writable directories 2011-04-20 11:03:01 -04:00
nilfs2 fs: export empty_aops 2011-04-05 23:51:48 +02:00
nls
notify Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
ntfs Fix common misspellings 2011-03-31 11:26:23 -03:00
ocfs2 Revert wrong fixes for common misspellings 2011-04-26 23:31:11 -07:00
omfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
openpromfs
partitions Validate size of EFI GUID partition entries. 2011-05-06 07:46:37 -07:00
proc Don't lock guardpage if the stack is growing up 2011-05-09 16:22:07 -07:00
pstore Fix common misspellings 2011-03-31 11:26:23 -03:00
qnx4 block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
quota Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 2011-04-08 07:35:17 -07:00
ramfs ramfs: fix memleak on no-mmu arch 2011-04-14 16:06:56 -07:00
reiserfs Fix common misspellings 2011-03-31 11:26:23 -03:00
romfs
squashfs Fix common misspellings 2011-03-31 11:26:23 -03:00
sysfs kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
sysv Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ubifs UBIFS: seek journal heads to the latest bud in replay 2011-05-02 19:23:48 +03:00
udf Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ufs Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
xfs xfs: fix duplicate message output 2011-04-20 11:36:49 -05:00
aio.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
anon_inodes.c
attr.c Fix common misspellings 2011-03-31 11:26:23 -03:00
bad_inode.c
binfmt_aout.c
binfmt_elf.c brk: COMPAT_BRK: fix detection of randomized brk 2011-04-14 16:06:55 -07:00
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c Fix common misspellings 2011-03-31 11:26:23 -03:00
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio-integrity.c block: Require subsystems to explicitly allocate bio_set integrity mempool 2011-03-17 11:11:05 +01:00
bio.c Fix common misspellings 2011-03-31 11:26:23 -03:00
block_dev.c Fix common misspellings 2011-03-31 11:26:23 -03:00
buffer.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-24 19:01:30 -07:00
char_dev.c
compat.c select: remove unused MAX_SELECT_SECONDS 2011-03-21 00:16:08 -04:00
compat_binfmt_elf.c
compat_ioctl.c
dcache.c add hlist_bl_lock/unlock helpers 2011-04-25 18:14:10 -07:00
dcookies.c
direct-io.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
drop_caches.c fs: move i_sb_list out from under inode_lock 2011-03-24 21:16:32 -04:00
eventfd.c Docbook: add fs/eventfd.c and fix typos in it 2011-02-21 15:07:04 -08:00
eventpoll.c Fix common misspellings 2011-03-31 11:26:23 -03:00
exec.c Small typo fix... 2011-03-21 00:16:09 -04:00
fcntl.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
fhandle.c fs/fhandle.c: add <linux/personality.h> for ia64 2011-04-14 16:06:56 -07:00
fifo.c Filesystem: fifo: Fixed coding style issue. 2011-03-21 00:16:09 -04:00
file.c vfs: avoid large kmalloc()s for the fdtable 2011-04-28 11:28:20 -07:00
file_table.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-16 13:26:17 -07:00
filesystems.c fs: synchronize_rcu when unregister_filesystem success not failure 2011-04-17 10:42:01 -07:00
fs-writeback.c Fix common misspellings 2011-03-31 11:26:23 -03:00
fs_struct.c
generic_acl.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
inode.c fs: export empty_aops 2011-04-05 23:51:48 +02:00
internal.h fs: move i_wb_list out from under inode_lock 2011-03-24 21:17:51 -04:00
ioctl.c vfs: cleanup do_vfs_ioctl() 2011-03-21 00:16:08 -04:00
ioprio.c
Kconfig Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2011-03-16 19:01:29 -07:00
Kconfig.binfmt
libfs.c
locks.c Merge branch 'for-2.6.39' of git://linux-nfs.org/~bfields/linux 2011-03-24 08:20:39 -07:00
Makefile Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2011-03-16 19:01:29 -07:00
mbcache.c Fix common misspellings 2011-03-31 11:26:23 -03:00
mpage.c fs: make mpage read/write_pages() plug 2011-03-10 08:52:26 +01:00
namei.c vfs: Fix absolute RCU path walk failures due to uninitialized seq number 2011-04-15 15:28:12 -07:00
namespace.c Revert "vfs: Export file system uuid via /proc/<pid>/mountinfo" 2011-04-12 13:35:56 -07:00
nfsctl.c open-style analog of vfs_path_lookup() 2011-03-14 09:15:28 -04:00
no-block.c
open.c fs: Use BUG_ON(!mnt) at dentry_open(). 2011-03-21 01:10:41 -04:00
pipe.c Fix broken "pipe: use event aware wakeups" optimization 2011-01-20 16:21:59 -08:00
pnode.c
pnode.h
posix_acl.c NFS: Prevent memory allocation failure in nfsacl_encode() 2011-01-25 15:24:47 -05:00
read_write.c
read_write.h
readdir.c
select.c select: remove unused MAX_SELECT_SECONDS 2011-03-21 00:16:08 -04:00
seq_file.c
signalfd.c
splice.c
stack.c
stat.c readlinkat(), fchownat() and fstatat() with empty relative pathnames 2011-03-15 02:21:45 -04:00
statfs.c clean statfs-like syscalls up 2011-03-14 09:15:28 -04:00
super.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
sync.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
timerfd.c
utimes.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
xattr.c vfs: Pass setxattr(2) flags properly 2011-04-21 07:34:44 -07:00
xattr_acl.c