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Andrea Arcangeli 5f24ce5fd3 thp: remove PG_buddy 
PG_buddy can be converted to _mapcount == -2.  So the PG_compound_lock can
be added to page->flags without overflowing (because of the sparse section
bits increasing) with CONFIG_X86_PAE=y and CONFIG_X86_PAT=y.  This also
has to move the memory hotplug code from _mapcount to lru.next to avoid
any risk of clashes.  We can't use lru.next for PG_buddy removal, but
memory hotplug can use lru.next even more easily than the mapcount
instead.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2011-01-13 17:32:43 -08:00
..
9p switch 9p 2011-01-12 20:03:43 -05:00
adfs switch adfs 2011-01-12 20:02:45 -05:00
affs switch affs 2011-01-12 20:03:42 -05:00
afs switch afs 2011-01-12 20:04:20 -05:00
autofs4
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befs befs: don't pass huge structs by value 2011-01-13 08:03:15 -08:00
bfs
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btrfs Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
cachefiles
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ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2011-01-13 10:25:24 -08:00
cifs switch cifs 2011-01-12 20:02:46 -05:00
coda Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-01-13 10:27:28 -08:00
configfs switch configfs 2011-01-12 20:03:12 -05:00
cramfs cramfs: generate unique inode number for better inode cache usage 2011-01-13 08:03:23 -08:00
debugfs
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devpts
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dlm
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ecryptfs ecryptfs: fix broken build 2011-01-13 17:19:38 -08:00
efs
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exofs
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exportfs
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ext2 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2011-01-11 14:37:31 -08:00
ext3 Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
ext4 Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
fat switch fat to ->s_d_op, close exportfs races there 2011-01-12 20:02:43 -05:00
freevxfs
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fscache
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fuse switch fuse 2011-01-12 20:02:44 -05:00
gfs2 Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
hfs switch hfs 2011-01-12 20:02:45 -05:00
hfsplus switch hfsplus 2011-01-12 20:02:45 -05:00
hostfs switch hostfs 2011-01-12 20:03:42 -05:00
hpfs switch hpfs 2011-01-12 20:02:47 -05:00
hppfs
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hugetlbfs
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isofs fix isofs d_op handling 2011-01-12 20:02:43 -05:00
jbd
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jbd2 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-01-13 10:05:56 -08:00
jffs2
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jfs Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
lockd
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logfs Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
minix minixfs: kill dead code 2011-01-12 20:02:44 -05:00
ncpfs move internal-only parts of ncpfs headers to fs/ncpfs 2011-01-12 20:03:43 -05:00
nfs NFS: Fix NFSv3 exclusive open semantics 2011-01-13 12:06:29 -08:00
nfs_common
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nfsd Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
nilfs2 Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
nls
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notify Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-01-13 10:05:56 -08:00
ntfs NTFS: writev() fix and maintenance/contact details update 2011-01-12 08:35:53 -08:00
ocfs2 Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
omfs
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openpromfs
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partitions Merge branch 'for-2.6.38/event-handling' into for-2.6.38/core 2011-01-13 14:47:54 +01:00
proc thp: remove PG_buddy 2011-01-13 17:32:43 -08:00
qnx4
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quota
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ramfs
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reiserfs Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
romfs
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squashfs
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sysfs
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sysv switch sysv 2011-01-12 20:02:44 -05:00
ubifs
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udf Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6 2011-01-11 14:45:52 -08:00
ufs
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xfs Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
Kconfig
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Kconfig.binfmt
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Makefile
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aio.c aio: remove unused aio_run_iocbs() 2011-01-13 08:03:22 -08:00
anon_inodes.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-01-13 10:27:28 -08:00
attr.c
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bad_inode.c
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binfmt_aout.c
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binfmt_elf.c binfmt_elf: cleanups 2011-01-13 08:03:12 -08:00
binfmt_elf_fdpic.c
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binfmt_em86.c
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binfmt_flat.c
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binfmt_misc.c
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binfmt_script.c
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binfmt_som.c
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bio-integrity.c
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bio.c
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block_dev.c Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
buffer.c
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char_dev.c Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
compat.c
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compat_binfmt_elf.c
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compat_ioctl.c
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dcache.c fs: fix kernel-doc for dcache::prepend_path 2011-01-12 20:06:57 -05:00
dcookies.c
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direct-io.c
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drop_caches.c
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eventfd.c
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eventpoll.c epoll: convert max_user_watches to long 2011-01-13 08:03:12 -08:00
exec.c
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fcntl.c
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fifo.c
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file.c
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file_table.c
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filesystems.c
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fs-writeback.c sync_inode_metadata: fix comment 2011-01-13 17:32:32 -08:00
fs_struct.c
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generic_acl.c
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inode.c
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internal.h
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ioctl.c
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ioprio.c
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libfs.c pass default dentry_operations to mount_pseudo() 2011-01-12 20:03:43 -05:00
locks.c
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mbcache.c
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mpage.c fs/mpage.c: consolidate code 2011-01-13 17:32:32 -08:00
namei.c vfs: pass struct file to do_truncate on O_TRUNC opens (try #2) 2011-01-12 20:06:59 -05:00
namespace.c
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nfsctl.c
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no-block.c
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open.c fs: add hole punching to fallocate 2011-01-12 20:16:43 -05:00
pipe.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-01-13 10:27:28 -08:00
pnode.c
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pnode.h
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posix_acl.c
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read_write.c fix signedness mess in rw_verify_area() on 64bit architectures 2011-01-12 20:06:58 -05:00
read_write.h
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readdir.c
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select.c fs/select.c: fix information leak to userspace 2011-01-13 08:03:12 -08:00
seq_file.c
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signalfd.c
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splice.c Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
stack.c
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stat.c
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statfs.c
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super.c Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
sync.c
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timerfd.c
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utimes.c
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xattr.c
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xattr_acl.c
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