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android_kernel_xiaomi_sm8450/fs/btrfs
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Miao Xie ceda086424 Btrfs: use a lock to protect incompat/compat flag of the super block 
The following case will make the incompat/compat flag of the super block
be recovered.
 Task1					|Task2
 flags = btrfs_super_incompat_flags();	|
					|flags = btrfs_super_incompat_flags();
 flags |= new_flag1;			|
					|flags |= new_flag2;
 btrfs_set_super_incompat_flags(flags);	|
					|btrfs_set_super_incompat_flags(flags);
the new_flag1 is recovered.

In order to avoid this problem, we introduce a lock named super_lock into
the btrfs_fs_info structure. If we want to update incompat/compat flags
of the super block, we must hold it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
2013-05-06 15:54:46 -04:00
..
acl.c
Btrfs: skip adding an acl attribute if we don't have to
2012-12-16 20:46:15 -05:00
async-thread.c
Btrfs: call the ordered free operation without any locks held
2012-07-25 16:15:07 -04:00
async-thread.h
btrfs: return void in functions without error conditions
2012-03-22 01:45:34 +01:00
backref.c
Btrfs: make __merge_refs() return type be void
2013-05-06 15:54:43 -04:00
backref.h
Btrfs: move fs/btrfs/ioctl.h to include/uapi/linux/btrfs.h
2013-02-20 09:37:28 -05:00
btrfs_inode.h
Btrfs: serialize unlocked dio reads with truncate
2013-02-20 12:59:47 -05:00
check-integrity.c
btrfs: define BTRFS_MAGIC as a u64 value
2013-02-20 13:00:01 -05:00
check-integrity.h
Btrfs: add optional integrity check code
2011-12-21 19:14:09 +01:00
compat.h
Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code
2009-01-06 09:38:55 -05:00
compression.c
Btrfs: cleanup unused arguments of btrfs_csum_data
2013-05-06 15:54:14 -04:00
compression.h
btrfs: return void in functions without error conditions
2012-03-22 01:45:34 +01:00
ctree.c
Btrfs: fix bad extent logging
2013-05-06 15:54:34 -04:00
ctree.h
Btrfs: use a lock to protect incompat/compat flag of the super block
2013-05-06 15:54:46 -04:00
delayed-inode.c
Btrfs: improve the delayed inode throttling
2013-03-07 07:52:40 -05:00
delayed-inode.h
Btrfs: improve the delayed inode throttling
2013-03-07 07:52:40 -05:00
delayed-ref.c
Btrfs: compare relevant parts of delayed tree refs
2013-05-06 15:54:29 -04:00
delayed-ref.h
Merge branch 'raid56-experimental' into for-linus-3.9
2013-02-20 14:06:05 -05:00
dev-replace.c
Btrfs: check the return value of btrfs_start_delalloc_inodes()
2013-02-20 09:37:21 -05:00
dev-replace.h
Btrfs: add new sources for device replace code
2012-12-12 17:15:41 -05:00
dir-item.c
Btrfs: fix hash overflow handling
2012-12-17 14:48:21 -05:00
disk-io.c
Btrfs: use a lock to protect incompat/compat flag of the super block
2013-05-06 15:54:46 -04:00
disk-io.h
Btrfs: cleanup unused arguments of btrfs_csum_data
2013-05-06 15:54:14 -04:00
export.c
fs: encode_fh: return FILEID_INVALID if invalid fid_type
2013-02-26 02:46:10 -05:00
export.h
NFS support for btrfs - v3
2008-09-25 11:04:06 -04:00
extent_io.c
Btrfs: improve the performance of the csums lookup
2013-05-06 15:54:35 -04:00
extent_io.h
Btrfs: improve the performance of the csums lookup
2013-05-06 15:54:35 -04:00
extent_map.c
Btrfs: fix bad extent logging
2013-05-06 15:54:34 -04:00
extent_map.h
Btrfs: fix bad extent logging
2013-05-06 15:54:34 -04:00
extent-tree.c
Btrfs: don't wait on ordered extents if we have a trans open
2013-05-06 15:54:32 -04:00
file-item.c
Btrfs: improve the performance of the csums lookup
2013-05-06 15:54:35 -04:00
file.c
Btrfs: fix bad extent logging
2013-05-06 15:54:34 -04:00
free-space-cache.c
Btrfs: Include the device in most error printk()s
2013-05-06 15:54:23 -04:00
free-space-cache.h
Btrfs: add some free space cache tests
2013-05-06 15:52:54 -04:00
hash.h
btrfs: extended inode refs
2012-10-09 09:14:45 -04:00
inode-item.c
btrfs: extended inode refs
2012-10-09 09:14:45 -04:00
inode-map.c
Btrfs: improve the noflush reservation
2012-12-11 13:31:31 -05:00
inode-map.h
Btrfs: Support reading/writing on disk free ino cache
2011-04-25 16:46:11 +08:00
inode.c
btrfs: abort unlink trans in missed error case
2013-05-06 15:54:36 -04:00
ioctl.c
Btrfs: use tree_root to avoid edquot when disabling quota
2013-05-06 15:54:41 -04:00
Kconfig
btrfs: update kconfig title
2013-05-06 15:54:22 -04:00
locking.c
Btrfs: save us a read_lock
2013-02-20 09:37:17 -05:00
locking.h
Btrfs: remove btrfs_try_spin_lock
2013-03-14 14:57:10 -04:00
lzo.c
btrfs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:21 +08:00
Makefile
Btrfs: RAID5 and RAID6
2013-02-01 14:24:23 -05:00
math.h
Btrfs: cleanup duplicated division functions
2012-12-11 13:31:30 -05:00
ordered-data.c
Btrfs: improve the performance of the csums lookup
2013-05-06 15:54:35 -04:00
ordered-data.h
Btrfs: improve the performance of the csums lookup
2013-05-06 15:54:35 -04:00
orphan.c
btrfs: replace many BUG_ONs with proper error handling
2012-03-22 11:52:54 +01:00
print-tree.c
Btrfs: Include the device in most error printk()s
2013-05-06 15:54:23 -04:00
print-tree.h
Btrfs: Create extent_buffer interface for large blocksizes
2008-09-25 11:03:56 -04:00
qgroup.c
Btrfs: fix a warning when updating qgroup limit
2013-05-06 15:54:41 -04:00
raid56.c
btrfs/raid56: Add missing #include <linux/vmalloc.h>
2013-03-03 06:53:41 -05:00
raid56.h
Btrfs: RAID5 and RAID6
2013-02-01 14:24:23 -05:00
rcu-string.h
Btrfs: use rcu to protect device->name
2012-06-14 21:29:16 -04:00
reada.c
Btrfs: introduce GET_READ_MIRRORS functionality for btrfs_map_block()
2012-12-12 17:15:43 -05:00
relocation.c
Btrfs: fix bad extent logging
2013-05-06 15:54:34 -04:00
root-tree.c
Btrfs: rename root_times_lock to root_item_lock
2012-12-16 20:46:21 -05:00
scrub.c
Btrfs: add a incompatible format change for smaller metadata extent refs
2013-05-06 15:54:18 -04:00
send.c
Btrfs: allow omitting stream header and end-cmd for btrfs send
2013-05-06 15:54:44 -04:00
send.h
btrfs: add "no file data" flag to btrfs send ioctl
2013-02-20 12:59:39 -05:00
struct-funcs.c
Btrfs: rewrite BTRFS_SETGET_FUNCS
2012-07-23 16:28:06 -04:00
super.c
Btrfs: fix unblocked autodefraggers when remount
2013-05-06 15:54:45 -04:00
sysfs.c
btrfs: fixup/remove module.h usage as required
2013-03-01 15:01:01 -05:00
transaction.c
Btrfs: fix infinite loop when we abort on mount
2013-05-06 15:54:29 -04:00
transaction.h
btrfs: clean snapshots one by one
2013-05-06 15:54:21 -04:00
tree-defrag.c
btrfs: remove cache only arguments from defrag path
2013-02-20 12:59:36 -05:00
tree-log.c
Btrfs: fix bad extent logging
2013-05-06 15:54:34 -04:00
tree-log.h
btrfs: return void in functions without error conditions
2012-03-22 01:45:34 +01:00
ulist.c
Btrfs: add a rb_tree to improve performance of ulist search
2013-05-06 15:54:44 -04:00
ulist.h
Btrfs: add a rb_tree to improve performance of ulist search
2013-05-06 15:54:44 -04:00
version.h
Update Btrfs files for in-kernel usage
2008-09-25 15:41:59 -04:00
volumes.c
Btrfs: use a lock to protect incompat/compat flag of the super block
2013-05-06 15:54:46 -04:00
volumes.h
Merge branch 'raid56-experimental' into for-linus-3.9
2013-02-20 14:06:05 -05:00
xattr.c
Btrfs: only log the inode item if we can get away with it
2012-12-16 20:46:21 -05:00
xattr.h
fs/vfs/security: pass last path component to LSM on inode creation
2011-02-01 11:12:29 -05:00
zlib.c
btrfs: fix message printing
2012-10-09 09:19:57 -04:00