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6649a38632
android_kernel_xiaomi_sm8350/fs
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Ken Chen 6649a38632 [PATCH] hugetlb: preserve hugetlb pte dirty state 
__unmap_hugepage_range() is buggy that it does not preserve dirty state of
huge_pte when unmapping hugepage range.  It causes data corruption in the
event of dop_caches being used by sys admin.  For example, an application
creates a hugetlb file, modify pages, then unmap it.  While leaving the
hugetlb file alive, comes along sys admin doing a "echo 3 >
/proc/sys/vm/drop_caches".

drop_pagecache_sb() will happily free all pages that aren't marked dirty if
there are no active mapping.  Later when application remaps the hugetlb
file back and all data are gone, triggering catastrophic flip over on
application.

Not only that, the internal resv_huge_pages count will also get all messed
up.  Fix it up by marking page dirty appropriately.

Signed-off-by: Ken Chen <kenchen@google.com>
Cc: "Nish Aravamudan" <nish.aravamudan@gmail.com>
Cc: Adam Litke <agl@us.ibm.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: <stable@kernel.org>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09 09:25:46 -08:00
..
9p [PATCH] 9p: null terminate error strings for debug print 2007-01-26 13:51:00 -08:00
adfs [PATCH] adfs: fix filename handling 2007-01-05 23:55:22 -08:00
affs
afs
autofs
autofs4 [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
befs [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
bfs [PATCH] update Tigran's email addresses 2006-12-13 09:05:53 -08:00
cifs [CIFS] Minor cleanup 2007-02-06 20:43:30 +00:00
coda
configfs configfs: Zero terminate data in configfs attribute writes. 2007-02-07 12:17:08 -08:00
cramfs
debugfs DebugFS : file/directory removal fix 2006-12-13 15:38:45 -08:00
devpts
dlm [PATCH] dlm: use kern_recvmsg() 2007-02-09 09:14:06 -08:00
ecryptfs [CRYPTO] api: Remove deprecated interface 2007-02-07 09:21:00 +11:00
efs
exportfs
ext2
ext3
ext4
fat
freevxfs
fuse [PATCH] fuse: fix bug in control filesystem mount 2007-01-30 08:26:45 -08:00
gfs2 [GFS2] make gfs2_writepages() static 2007-02-07 10:48:48 -05:00
hfs
hfsplus
hostfs [PATCH] uml: fix mknod 2007-01-30 08:26:44 -08:00
hpfs
hppfs
hugetlbfs [PATCH] hugetlb: preserve hugetlb pte dirty state 2007-02-09 09:25:46 -08:00
isofs
jbd [PATCH] jbd: wait for already submitted t_sync_datalist buffer to complete 2006-12-22 08:55:51 -08:00
jbd2
jffs Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2007-01-18 10:34:51 +11:00
jffs2 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2007-01-18 10:34:51 +11:00
jfs JFS: Remove incorrect kgdb define 2007-01-26 10:14:36 -06:00
lockd [PATCH] fs/lockd/clntlock.c: add missing newlines to dprintk's 2007-01-30 08:26:45 -08:00
minix
msdos
ncpfs [PATCH] ncpfs: ensure we free wdog_pid on parse_option or fill_inode failure 2006-12-13 09:05:53 -08:00
nfs [PATCH] Remove warning: VFS is out of sync with lock manager 2007-01-30 16:01:35 -08:00
nfs_common
nfsd [PATCH] endianness bug: ntohl() misspelled as >> 24 in fh_verify(). 2007-02-01 16:17:06 -08:00
nls
ntfs [PATCH] ntfs: kmap_atomic() atomicity fix 2007-01-30 16:01:35 -08:00
ocfs2 [PATCH] ocfs2 heartbeat: clean up bio submission code 2007-02-07 12:15:58 -08:00
openpromfs
partitions [MIPS] Rename SNI_RM200_PCI to just SNI_RM preparing for more RM machines 2006-12-09 01:03:58 +00:00
proc [PATCH] procfs: Fix listing of /proc/NOT_A_TGID/task 2007-02-01 16:22:41 -08:00
qnx4
ramfs [PATCH] ramfs breaks without CONFIG_BLOCK 2006-12-30 10:56:42 -08:00
reiserfs [PATCH] resierfs: avoid tail packing if an inode was ever mmapped 2007-01-23 07:52:06 -08:00
romfs
smbfs [PATCH] smbfs: Make conn_pid a struct pid 2006-12-13 09:05:53 -08:00
sysfs sysfs: Shadow directory support 2007-02-07 10:37:14 -08:00
sysv [PATCH] fs/sysv/: proper prototypes for 2 functions 2006-12-22 08:55:47 -08:00
udf
ufs [PATCH] ufs: restore back support of openstep 2007-02-09 09:25:46 -08:00
vfat
xfs [PATCH] Fix XFS after clear_page_dirty() removal 2006-12-21 10:01:08 -08:00
aio.c [PATCH] aio: fix buggy put_ioctx call in aio_complete - v2 2007-02-03 11:26:06 -08:00
attr.c
bad_inode.c [PATCH] fix memory corruption from misinterpreted bad_inode_ops return values 2007-01-05 23:55:23 -08:00
binfmt_aout.c
binfmt_elf_fdpic.c [PATCH] core-dumping unreadable binaries via PT_INTERP 2007-01-26 13:51:00 -08:00
binfmt_elf.c [PATCH] core-dumping unreadable binaries via PT_INTERP 2007-01-26 13:51:00 -08:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
binfmt_script.c
binfmt_som.c
bio.c [PATCH] optimize o_direct on block devices 2006-12-13 09:05:50 -08:00
block_dev.c [PATCH] revert blockdev direct io back to 2.6.19 version 2007-02-03 11:26:06 -08:00
buffer.c [PATCH] Fix try_to_free_buffer() locking 2007-01-29 20:20:42 -08:00
char_dev.c
compat_ioctl.c
compat.c [PATCH] fdtable: Make fdarray and fdsets equal in size 2006-12-10 09:57:22 -08:00
dcache.c
dcookies.c
direct-io.c [PATCH] dio: lock refcount operations 2006-12-10 09:57:21 -08:00
dnotify.c
dquot.c
drop_caches.c
eventpoll.c
exec.c [PATCH] fdtable: Make fdarray and fdsets equal in size 2006-12-10 09:57:22 -08:00
fcntl.c [PATCH] fdtable: Make fdarray and fdsets equal in size 2006-12-10 09:57:22 -08:00
fifo.c
file_table.c
file.c [PATCH] fdtable: Provide free_fdtable() wrapper 2006-12-22 08:55:50 -08:00
filesystems.c
fs-writeback.c Write back inode data pages even when the inode itself is locked 2007-01-26 12:53:20 -08:00
generic_acl.c
inode.c [PATCH] relative atime 2006-12-13 09:05:50 -08:00
inotify_user.c
inotify.c
internal.h
ioctl.c
ioprio.c
Kconfig [PATCH] ocfs2: drop INET from Kconfig, not needed 2007-02-07 12:14:27 -08:00
Kconfig.binfmt
libfs.c
locks.c
Makefile
mbcache.c
mpage.c
namei.c
namespace.c [PATCH] relative atime 2006-12-13 09:05:50 -08:00
nfsctl.c
no-block.c
open.c [PATCH] fdtable: Make fdarray and fdsets equal in size 2006-12-10 09:57:22 -08:00
pipe.c [PATCH] fix leaks on pipe(2) failure exits 2006-12-21 00:16:03 -08:00
pnode.c
pnode.h
posix_acl.c
quota_v1.c
quota_v2.c
quota.c
read_write.c [PATCH] one more EXPORT_UNUSED_SYMBOL removal 2006-12-13 09:05:53 -08:00
read_write.h
readdir.c
select.c [PATCH] fdtable: Make fdarray and fdsets equal in size 2006-12-10 09:57:22 -08:00
seq_file.c
splice.c [PATCH] constify pipe_buf_operations 2006-12-13 09:05:47 -08:00
stack.c [PATCH] fsstack: Remove inode copy 2006-12-22 08:55:48 -08:00
stat.c
super.c [PATCH] Revert bd_mount_mutex back to a semaphore 2007-01-11 18:18:21 -08:00
sync.c
utimes.c
xattr_acl.c
xattr.c