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kernel_optimize_test/fs
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Kirill A. Shutemov c164e038ee mm: fix huge zero page accounting in smaps report 
As a small zero page, huge zero page should not be accounted in smaps
report as normal page.

For small pages we rely on vm_normal_page() to filter out zero page, but
vm_normal_page() is not designed to handle pmds.  We only get here due
hackish cast pmd to pte in smaps_pte_range() -- pte and pmd format is not
necessary compatible on each and every architecture.

Let's add separate codepath to handle pmds.  follow_trans_huge_pmd() will
detect huge zero page for us.

We would need pmd_dirty() helper to do this properly.  The patch adds it
to THP-enabled architectures which don't yet have one.

[akpm@linux-foundation.org: use do_div to fix 32-bit build]
Signed-off-by: "Kirill A. Shutemov" <kirill@shutemov.name>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Tested-by: Fengwei Yin <yfw.kernel@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:08 -08:00
..
9p 9p: switch to %p[dD] 2014-10-09 02:39:04 -04:00
adfs adfs: add __printf verification, fix format/argument mismatches 2014-08-08 15:57:24 -07:00
affs fs/affs: remove redundant sys_tz declarations 2014-10-14 02:18:22 +02:00
afs Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-13 16:23:15 +02:00
autofs4 autofs4: d_manage() should return -EISDIR when appropriate in rcu-walk mode. 2014-10-14 02:18:16 +02:00
befs fs/befs/btree.c: remove typedef befs_btree_node 2014-10-14 02:18:20 +02:00
bfs fs/bfs: use bfs prefix for dump_imap 2014-08-08 15:57:24 -07:00
btrfs btrfs: zero out left over bytes after processing compression streams 2014-11-30 09:33:51 -08:00
cachefiles FS-Cache fixes 2014-10-14 08:40:15 +02:00
ceph ceph: fix flush tid comparision 2014-11-13 22:19:05 +03:00
cifs fs/cifs/smb2file.c: replace count*size kzalloc by kcalloc 2014-12-10 17:41:02 -08:00
coda fs/coda: use linux/uaccess.h 2014-08-08 15:57:20 -07:00
configfs
cramfs fs/cramfs/inode.c: use linux/uaccess.h 2014-08-08 15:57:25 -07:00
debugfs
devpts
dlm dlm: fix missing endian conversion of rcom_status flags 2014-10-14 15:11:48 -05:00
ecryptfs fs: limit filesystem stacking depth 2014-10-24 00:14:39 +02:00
efivarfs
efs fs/efs/namei.c: return is not a function 2014-08-08 15:57:18 -07:00
exofs Boaz Harrosh - Fix broken email address 2014-10-19 20:22:32 +03:00
exportfs
ext2 percpu_counter: add @gfp to percpu_counter_init() 2014-09-08 09:51:29 +09:00
ext3 ext3: Don't check quota format when there are no quota files 2014-10-22 09:02:48 +02:00
ext4 ext4: make ext4_ext_convert_to_initialized() return proper number of blocks 2014-10-30 10:53:17 -04:00
f2fs f2fs: support volatile operations for transient data 2014-10-07 11:54:41 -07:00
fat fat: fix oops on corrupted vfat fs 2014-12-03 09:36:03 -08:00
freevxfs
fscache fs/fscache/object-list.c: use __seq_open_private() 2014-10-13 17:52:21 +01:00
fuse vfs: Make d_invalidate return void 2014-10-09 02:38:57 -04:00
gfs2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-10-13 11:28:42 +02:00
hfs fs/hfs/hfs_fs.h: remove redundant sys_tz declaration 2014-10-14 02:18:20 +02:00
hfsplus
hostfs hostfs: support rename flags 2014-08-07 14:40:09 -04:00
hpfs fs/hpfs/dnode.c: fix suspect code indent 2014-08-08 15:57:22 -07:00
hppfs
hugetlbfs
isofs isofs: avoid unused function warning 2014-11-19 13:09:37 -05:00
jbd fs, jbd: use a more generic hash function 2014-10-22 10:02:04 +02:00
jbd2 jbd2: fix regression where we fail to initialize checksum seed when loading 2014-12-01 21:57:06 -05:00
jffs2 [jffs2] kill wbuf_queued/wbuf_dwork_lock 2014-10-09 02:39:01 -04:00
jfs Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-13 16:23:15 +02:00
kernfs vfs: Remove unnecessary calls of check_submounts_and_drop 2014-10-09 02:38:56 -04:00
lockd File locking related changes for v3.18 (pile #1) 2014-10-11 13:21:34 -04:00
logfs fs/logfs/readwrite.c: kernel-doc warning fixes 2014-08-06 18:01:12 -07:00
minix minix zmap block counts calculation fix 2014-08-08 15:57:20 -07:00
ncpfs fs/ncpfs/dir.c: remove redundant sys_tz declaration 2014-10-14 02:18:16 +02:00
nfs NFS: Don't try to reclaim delegation open state if recovery failed 2014-11-12 17:19:04 -05:00
nfs_common lockd: move lockd's grace period handling into its own module 2014-09-17 16:33:11 -04:00
nfsd nfsd: Fix slot wake up race in the nfsv4.1 callback code 2014-11-19 15:45:44 -05:00
nilfs2 nilfs2: improve the performance of fdatasync() 2014-10-14 02:18:20 +02:00
nls
notify Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-09 21:21:34 -08:00
ntfs NTFS: Bump version to 2.1.31. 2014-10-16 12:53:35 +01:00
ocfs2 ocfs2: remove unneeded NULL check 2014-12-10 17:41:04 -08:00
omfs FS/OMFS: block number sanity check during fill_super operation 2014-10-14 02:18:22 +02:00
openpromfs
overlayfs ovl: ovl_dir_fsync() cleanup 2014-11-20 16:40:02 +01:00
proc mm: fix huge zero page accounting in smaps report 2014-12-10 17:41:08 -08:00
pstore pstore: Fix duplicate {console,ftrace}-efi entries 2014-10-15 13:51:33 -07:00
qnx4
qnx6 fs/qnx6: update debugging to current functions 2014-08-08 15:57:26 -07:00
quota quota: Properly return errors from dquot_writeback_dquots() 2014-10-22 09:08:03 +02:00
ramfs fs/ramfs/file-nommu.c: replace count*size kzalloc by kcalloc 2014-08-08 15:57:18 -07:00
reiserfs fs/reiserfs/journal.c: fix sparse context imbalance warning 2014-10-14 02:18:20 +02:00
romfs fs/romfs/super.c: add blank line after declarations 2014-08-08 15:57:25 -07:00
squashfs fs/squashfs/super.c: logging cleanup 2014-08-06 18:01:13 -07:00
sysfs
sysv
ubifs UBIFS: Fix trivial typo in power_cut_emulated() 2014-09-30 09:29:44 +03:00
udf udf: Fix loading of special inodes 2014-10-09 13:06:14 +02:00
ufs fs/ufs/balloc.c: remove unused variable 2014-10-14 02:18:20 +02:00
xfs xfs: track bulkstat progress by agino 2014-11-07 08:33:52 +11:00
aio.c Merge git://git.kvack.org/~bcrl/aio-fixes 2014-11-25 18:55:44 -08:00
anon_inodes.c
attr.c
bad_inode.c bad_inode: add ->rename2() 2014-08-07 14:40:09 -04:00
binfmt_aout.c handle suicide on late failure exits in execve() in search_binary_handler() 2014-10-09 02:39:00 -04:00
binfmt_elf_fdpic.c handle suicide on late failure exits in execve() in search_binary_handler() 2014-10-09 02:39:00 -04:00
binfmt_elf.c handle suicide on late failure exits in execve() in search_binary_handler() 2014-10-09 02:39:00 -04:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c binfmt_misc: work around gcc-4.9 warning 2014-10-14 02:18:16 +02:00
binfmt_script.c
binfmt_som.c
block_dev.c Return short read or 0 at end of a raw device, not EIO 2014-10-31 06:33:26 -04:00
buffer.c fs: clarify rate limit suppressed buffer I/O errors 2014-10-21 13:55:11 -06:00
char_dev.c fs/char_dev.c: remove pointless assignment from __register_chrdev_region() 2014-12-10 17:41:04 -08:00
compat_binfmt_elf.c
compat_ioctl.c
compat.c vfs: move getname() from callers to do_mount() 2014-10-09 02:39:16 -04:00
coredump.c coredump: add %i/%I in core_pattern to report the tid of the crashed thread 2014-10-14 02:18:21 +02:00
dcache.c vfs: fix reference leak in d_prune_aliases() 2014-11-19 13:07:20 -05:00
dcookies.c
direct-io.c fuse: honour max_read and max_write in direct_io mode 2014-09-26 21:16:51 -04:00
drop_caches.c
eventfd.c
eventpoll.c eventpoll: fix uninitialized variable in epoll_ctl 2014-09-10 15:42:12 -07:00
exec.c fs: Do not include mpx.h in exec.c 2014-11-18 02:01:40 +01:00
fcntl.c security: make security_file_set_fowner, f_setown and __f_setown void return 2014-09-09 16:01:36 -04:00
fhandle.c
file_table.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-10-13 11:28:42 +02:00
file.c Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-13 15:44:12 +02:00
filesystems.c
fs_pin.c make fs/{namespace,super}.c forget about acct.h 2014-08-07 14:40:09 -04:00
fs_struct.c
fs-writeback.c
inode.c mm: allow drivers to prevent new writable mappings 2014-08-08 15:57:31 -07:00
internal.h vfs: export __inode_permission() to modules 2014-10-24 00:14:35 +02:00
ioctl.c
Kconfig overlay filesystem 2014-10-24 00:14:38 +02:00
Kconfig.binfmt
libfs.c locks: plumb a "priv" pointer into the setlease routines 2014-10-07 14:06:12 -04:00
locks.c locks: flock_make_lock should return a struct file_lock (or PTR_ERR) 2014-10-07 14:06:13 -04:00
Makefile ovl: rename filesystem type to "overlay" 2014-11-20 16:39:59 +01:00
mbcache.c
mount.h vfs: Add a function to lazily unmount all mounts from any dentry. 2014-10-09 02:38:55 -04:00
mpage.c vfs: guard end of device for mpage interface 2014-10-09 22:25:53 -04:00
namei.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-11-02 10:28:43 -08:00
namespace.c vfs: introduce clone_private_mount() 2014-10-24 00:14:36 +02:00
no-block.c
open.c vfs: add i_op->dentry_open() 2014-10-24 00:14:35 +02:00
pipe.c
pnode.c get rid of propagate_umount() mistakenly treating slaves as busy. 2014-08-30 18:31:41 -04:00
pnode.h
posix_acl.c
proc_namespace.c
read_write.c cachefiles_write_page(): switch to __kernel_write() 2014-10-09 02:39:05 -04:00
readdir.c
select.c
seq_file.c
signalfd.c
splice.c vfs: export do_splice_direct() to modules 2014-10-24 00:14:35 +02:00
stack.c fs: fix comment for 'CONFIG_LBADF' 2014-08-26 09:35:56 +02:00
stat.c
statfs.c
super.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-10-13 11:28:42 +02:00
sync.c Export sync_filesystem() for modular ->remount_fs() use 2014-09-05 08:16:21 -07:00
timerfd.c timerfd: Remove an always true check 2014-08-27 11:17:48 +02:00
utimes.c
xattr.c vfs: Deduplicate code shared by xattr system calls operating on paths 2014-10-12 17:09:10 -04:00