Piteball/android_kernel_samsung_msm8976
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android_kernel_samsung_msm8976/fs
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Li Zefan 0e7b824c4e Btrfs: don't make a file partly checksummed through file clone 
To reproduce the bug:

  # mount /dev/sda7 /mnt
  # dd if=/dev/zero of=/mnt/src bs=4K count=1
  # umount /mnt

  # mount -o nodatasum /dev/sda7 /mnt
  # dd if=/dev/zero of=/mnt/dst bs=4K count=1
  # clone_range -s 4K -l 4K /mnt/src /mnt/dst

  # echo 3 > /proc/sys/vm/drop_caches
  # cat /mnt/dst
  # dmesg
  ...
  btrfs no csum found for inode 258 start 0
  btrfs csum failed ino 258 off 0 csum 2566472073 private 0

It's because part of the file is checksummed and the other part is not,
and then btrfs will complain checksum is not found when we read the file.

Disallow file clone if src and dst file have different checksum flag,
so we ensure a file is completely checksummed or unchecksummed.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-09-18 10:20:46 -04:00
..
9p 9p: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:53 -04:00
adfs
affs affs: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:53 -04:00
afs AFS: Use i_generation not i_version for the vnode uniquifier 2011-06-16 11:44:48 -04:00
autofs4 autofs4: bogus dentry_unhash() added in ->unlink() 2011-05-30 01:50:53 -04:00
befs
bfs bfs: remove unnecessary dentry_unhash on dir rename 2011-05-28 01:02:50 -04:00
btrfs Btrfs: don't make a file partly checksummed through file clone 2011-09-18 10:20:46 -04:00
cachefiles
ceph ceph analog of cifs build_path_from_dentry() race fix 2011-07-16 23:43:58 -04:00
cifs CIFS: Fix wrong length in cifs_iovec_read 2011-07-21 00:48:05 +00:00
coda coda_ioctl_permission() is safe in RCU mode 2011-06-20 10:44:19 -04:00
configfs configfs: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:54 -04:00
cramfs cramfs: get_cramfs_inode() returns ERR_PTR() on failure 2011-07-17 23:22:02 -04:00
debugfs debugfs: move to new strtobool 2011-05-19 16:55:28 +09:30
devpts
dlm Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-05-26 13:19:00 -07:00
ecryptfs eCryptfs: Remove ecryptfs_header_cache_2 2011-05-29 14:24:25 -05:00
efs
exofs fix exofs ->get_parent() 2011-07-17 23:20:29 -04:00
exportfs
ext2 ext2: remove unnecessary dentry_unhash on rmdir/rename_dir 2011-05-26 07:26:56 -04:00
ext3 fs: pass exact type of data dirties to ->dirty_inode 2011-05-27 07:04:40 -04:00
ext4 ext4: fixed tracepoints cleanup 2011-06-06 09:51:52 -04:00
fat fat: Fix corrupt inode flags when remove ATTR_SYS flag 2011-05-31 19:42:24 +09:00
freevxfs treewide: fix a few typos in comments 2011-05-10 10:16:21 +02:00
fscache FS-Cache: Fix __fscache_uncache_all_inode_pages()'s outer loop 2011-07-21 10:59:16 -07:00
fuse more conservative S_NOSEC handling 2011-06-03 18:24:58 -04:00
gfs2 GFS2: Resolve inode eviction and ail list interaction bug 2011-07-14 08:59:44 +01:00
hfs hfs: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:52 -04:00
hfsplus hfsplus: Fix double iput of the same inode in hfsplus_fill_super() 2011-06-30 13:38:39 +02:00
hostfs hostfs: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:52 -04:00
hpfs hpfs: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:54 -04:00
hppfs hppfs_lookup(): don't open-code lookup_one_len() 2011-07-17 23:22:48 -04:00
hugetlbfs mm: don't access vm_flags as 'int' 2011-05-26 09:20:31 -07:00
isofs isofs: fix bh leak in isofs_fill_super() error case 2011-06-18 07:25:42 -07:00
jbd jbd: Fix comment to match the code in journal_start() 2011-05-24 00:27:53 +02:00
jbd2 jbd2: Fix oops in jbd2_journal_remove_journal_head() 2011-06-13 15:38:22 -04:00
jffs2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-05-28 13:03:41 -07:00
jfs jfs: agstart field must be 64 bits 2011-06-20 17:53:24 -05:00
lockd NLM: Don't hang forever on NLM unlock requests 2011-06-15 11:24:27 -04:00
logfs logfs doesn't need ->permission() at all 2011-06-20 10:44:26 -04:00
minix minix: remove unnecessary dentry_unhash on rmdir, dir rename 2011-05-28 01:02:54 -04:00
ncpfs ncpfs: fix rename over directory with dangling references 2011-05-28 01:02:53 -04:00
nfs Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 2011-07-13 14:34:08 -07:00
nfs_common
nfsd nfsd4: fix break_lease flags on nfsd open 2011-06-20 10:38:01 -04:00
nilfs2 nilfs2_permission() doesn't need to bail out in RCU mode 2011-06-20 10:44:33 -04:00
nls
notify
ntfs
ocfs2 more conservative S_NOSEC handling 2011-06-03 18:24:58 -04:00
omfs Remove unneeded version.h includes from fs/ 2011-06-24 08:34:22 -07:00
openpromfs
partitions Revert "block: Remove extra discard_alignment from hd_struct." 2011-05-30 07:42:51 +02:00
proc proc: restrict access to /proc/PID/io 2011-06-28 09:39:11 -07:00
pstore pstore: fix pstore filesystem mount/remount issue 2011-05-16 11:05:00 -07:00
qnx4
quota vmscan: change shrinker API by passing shrink_control struct 2011-05-25 08:39:26 -07:00
ramfs
reiserfs reiserfs_permission() doesn't need to bail out in RCU mode 2011-06-20 10:45:21 -04:00
romfs romfs: fix romfs_get_unmapped_area() argument check 2011-06-27 18:00:12 -07:00
squashfs Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus 2011-05-29 11:19:45 -07:00
sysfs Delay struct net freeing while there's a sysfs instance refering to it 2011-06-12 17:45:41 -04:00
sysv sysv: remove unnecessary dentry_unhash from rmdir, dir rename 2011-05-28 01:02:50 -04:00
ubifs ubifs: dereferencing an ERR_PTR in ubifs_mount() 2011-06-20 10:42:34 -04:00
udf udf: remove unnecessary dentry_unhash from rmdir, dir rename 2011-05-28 01:02:52 -04:00
ufs ufs should use d_splice_alias() 2011-07-17 23:21:35 -04:00
xfs xfs: unpin stale inodes directly in IOP_COMMITTED 2011-07-06 15:44:40 -05:00
aio.c
anon_inodes.c
attr.c Cache xattr security drop check for write v2 2011-05-28 12:02:09 -04:00
bad_inode.c bad_inode_permission() is safe from RCU mode 2011-06-20 10:44:00 -04:00
binfmt_aout.c
binfmt_elf.c
binfmt_elf_fdpic.c FDPIC: Fix memory leak 2011-07-06 12:15:16 -07:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio-integrity.c
bio.c block: improve the bio_add_page() and bio_add_pc_page() descriptions 2011-05-28 14:44:46 +02:00
block_dev.c block: use the passed in @bdev when claiming if partno is zero 2011-06-13 12:45:48 +02:00
buffer.c vfs: Fix data corruption after failed write in __block_write_begin() 2011-06-16 11:44:46 -04:00
char_dev.c
compat.c
compat_binfmt_elf.c
compat_ioctl.c
dcache.c vfs: drop conditional inode prefetch in __do_lookup_rcu 2011-07-21 11:01:42 -07:00
dcookies.c oprofile, dcookies: Fix possible circular locking dependency 2011-05-31 16:33:35 +02:00
direct-io.c
drop_caches.c vmscan: change shrinker API by passing shrink_control struct 2011-05-25 08:39:26 -07:00
eventfd.c
eventpoll.c
exec.c KEYS/DNS: Fix ____call_usermodehelper() to not lose the session keyring 2011-06-17 09:40:48 -07:00
fcntl.c
fhandle.c
fifo.c
file.c
file_table.c
filesystems.c
fs-writeback.c fs: pass exact type of data dirties to ->dirty_inode 2011-05-27 07:04:40 -04:00
fs_struct.c
generic_acl.c
inode.c mm: fix assertion mapping->nrpages == 0 in end_writeback() 2011-06-27 18:00:13 -07:00
internal.h
ioctl.c
ioprio.c
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-05-26 09:52:14 -07:00
Kconfig.binfmt
libfs.c fs/libfs.c: fix simple_attr_write() on 32bit machines 2011-07-19 22:09:30 -07:00
locks.c fs: fix lock initialization 2011-07-06 10:41:13 -07:00
Makefile
mbcache.c vmscan: change shrinker API by passing shrink_control struct 2011-05-25 08:39:26 -07:00
mpage.c mm/fs: add hooks to support cleancache 2011-05-26 10:01:43 -06:00
namei.c vfs: fix race in rcu lookup of pruned dentry 2011-07-19 21:49:01 -07:00
namespace.c fs/namespace.c: bound mount propagation fix 2011-05-26 07:26:44 -04:00
nfsctl.c
no-block.c
open.c
pipe.c
pnode.c
pnode.h
posix_acl.c
read_write.c
read_write.h
readdir.c
select.c
seq_file.c
signalfd.c
splice.c splice: add wakeup_pipe_readers() 2011-05-23 19:58:53 +02:00
stack.c
stat.c
statfs.c
super.c more conservative S_NOSEC handling 2011-06-03 18:24:58 -04:00
sync.c
timerfd.c timerfd: Fix wakeup of processes when timer is cancelled on clock change 2011-06-14 11:46:14 +02:00
utimes.c
xattr.c Cache xattr security drop check for write v2 2011-05-28 12:02:09 -04:00
xattr_acl.c