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alistair23-linux/fs/btrfs
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Qu Wenruo 0966a7b130 btrfs: scrub: Introduce full stripe lock for RAID56 
Unlike mirror based profiles, RAID5/6 recovery needs to read out the
whole full stripe.

And if we don't do proper protection, it can easily cause race condition.

Introduce 2 new functions: lock_full_stripe() and unlock_full_stripe()
for RAID5/6.
Which store a rb_tree of mutexes for full stripes, so scrub callers can
use them to lock a full stripe to avoid race.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ minor comment adjustments ]
Signed-off-by: David Sterba <dsterba@suse.com>
2017-04-18 14:07:27 +02:00
..
tests btrfs: remove unused qgroup members from btrfs_trans_handle 2017-04-18 14:07:25 +02:00
acl.c posix_acl: Clear SGID bit when setting file permissions 2016-09-22 10:55:32 +02:00
async-thread.c btrfs: fix crash when tracepoint arguments are freed by wq callbacks 2017-01-09 11:24:50 +01:00
async-thread.h btrfs: limit async_work allocation and worker func duration 2016-12-13 11:01:30 -08:00
backref.c btrfs: replace hardcoded value with SEQ_LAST macro 2017-04-18 14:07:25 +02:00
backref.h
btrfs_inode.h btrfs: make btrfs_inode_resume_unlocked_dio take btrfs_inode 2017-02-28 11:30:12 +01:00
check-integrity.c btrfs: take an fs_info directly when the root is not used otherwise 2016-12-06 16:06:59 +01:00
check-integrity.h btrfs: take an fs_info directly when the root is not used otherwise 2016-12-06 16:06:59 +01:00
compression.c btrfs: convert compressed_bio.pending_bios from atomic_t to refcount_t 2017-04-18 14:07:24 +02:00
compression.h btrfs: derive maximum output size in the compression implementation 2017-02-28 14:26:36 +01:00
ctree.c btrfs: sink GFP flags parameter to tree_mod_log_insert_root 2017-04-18 14:07:26 +02:00
ctree.h btrfs: scrub: Introduce full stripe lock for RAID56 2017-04-18 14:07:27 +02:00
dedupe.h btrfs: expand cow_file_range() to support in-band dedup and subpage-blocksize 2016-07-26 13:52:25 +02:00
delayed-inode.c btrfs: convert btrfs_delayed_item.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
delayed-inode.h btrfs: convert btrfs_delayed_item.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
delayed-ref.c btrfs: convert btrfs_delayed_ref_node.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
delayed-ref.h btrfs: convert btrfs_delayed_ref_node.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
dev-replace.c Btrfs: switch to div64_u64 if with a u64 divisor 2017-04-18 14:07:26 +02:00
dev-replace.h btrfs: constify device path passed to relevant helpers 2017-02-28 14:26:07 +01:00
dir-item.c btrfs: do proper error handling in btrfs_insert_xattr_item 2017-02-28 14:27:11 +01:00
disk-io.c btrfs: remove redundant parameter from btree_readahead_hook 2017-04-18 14:07:25 +02:00
disk-io.h btrfs: convert btrfs_root.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
export.c btrfs: Make btrfs_ino take a struct btrfs_inode 2017-02-14 15:50:51 +01:00
export.h
extent-tree.c btrfs: scrub: Introduce full stripe lock for RAID56 2017-04-18 14:07:27 +02:00
extent_io.c Btrfs: enable repair during read for raid56 profile 2017-04-18 14:07:26 +02:00
extent_io.h btrfs: convert extent_state.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
extent_map.c btrfs: convert extent_map.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
extent_map.h btrfs: convert extent_map.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
file-item.c Merge branch 'for-chris-4.11-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.11 2017-02-28 14:35:09 -08:00
file.c Btrfs: handle only applicable errors returned by btrfs_get_extent 2017-04-18 14:07:27 +02:00
free-space-cache.c btrfs: use clear_page where appropriate 2017-04-18 14:07:26 +02:00
free-space-cache.h btrfs: free-space-cache, clean up unnecessary root arguments 2017-02-17 12:03:56 +01:00
free-space-tree.c btrfs: remove unused parameter from clean_tree_block 2017-02-17 12:03:51 +01:00
free-space-tree.h
hash.c btrfs: advertise which crc32c implementation is being used at module load 2016-06-06 14:08:28 +02:00
hash.h btrfs: advertise which crc32c implementation is being used at module load 2016-06-06 14:08:28 +02:00
inode-item.c btrfs: take an fs_info directly when the root is not used otherwise 2016-12-06 16:06:59 +01:00
inode-map.c btrfs: all btrfs_delalloc_release_metadata take btrfs_inode 2017-02-28 11:30:07 +01:00
inode-map.h
inode.c Btrfs: handle only applicable errors returned by btrfs_get_extent 2017-04-18 14:07:27 +02:00
ioctl.c btrfs: track exclusive filesystem operation in flags 2017-04-18 14:07:25 +02:00
Kconfig
locking.c
locking.h
lzo.c btrfs: derive maximum output size in the compression implementation 2017-02-28 14:26:36 +01:00
Makefile
math.h
ordered-data.c btrfs: convert btrfs_ordered_extent.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
ordered-data.h btrfs: convert btrfs_ordered_extent.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
orphan.c
print-tree.c btrfs: take an fs_info directly when the root is not used otherwise 2016-12-06 16:06:59 +01:00
print-tree.h btrfs: take an fs_info directly when the root is not used otherwise 2016-12-06 16:06:59 +01:00
props.c btrfs: Make btrfs_ino take a struct btrfs_inode 2017-02-14 15:50:51 +01:00
props.h
qgroup.c btrfs: qgroup: Re-arrange tracepoint timing to co-operate with reserved space tracepoint 2017-04-18 14:07:26 +02:00
qgroup.h btrfs: qgroup: Re-arrange tracepoint timing to co-operate with reserved space tracepoint 2017-04-18 14:07:26 +02:00
raid56.c btrfs: Wait for in-flight bios before freeing target device for raid56 2017-04-18 14:07:26 +02:00
raid56.h btrfs: take an fs_info directly when the root is not used otherwise 2016-12-06 16:06:59 +01:00
rcu-string.h
reada.c btrfs: remove local blocksize variable in reada_find_extent 2017-04-18 14:07:25 +02:00
relocation.c btrfs: Make btrfs_orphan_add take btrfs_inode 2017-02-28 11:30:10 +01:00
root-tree.c btrfs: Use ktime_get_real_ts for root ctime 2017-04-18 14:07:27 +02:00
scrub.c btrfs: scrub: Introduce full stripe lock for RAID56 2017-04-18 14:07:27 +02:00
send.c Btrfs: fix an integer overflow check 2017-03-29 14:29:08 +02:00
send.h
struct-funcs.c btrfs: fix string and comment grammatical issues and typos 2016-05-25 22:35:14 +02:00
super.c btrfs: No need to check !(flags & MS_RDONLY) twice 2017-04-18 14:07:25 +02:00
sysfs.c btrfs: convert printk(KERN_* to use pr_* calls 2016-09-26 18:08:44 +02:00
sysfs.h
transaction.c btrfs: qgroup: Fix qgroup corruption caused by inode_cache mount option 2017-04-18 14:07:26 +02:00
transaction.h btrfs: remove unused qgroup members from btrfs_trans_handle 2017-04-18 14:07:25 +02:00
tree-defrag.c
tree-log.c btrfs: convert extent_map.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
tree-log.h btrfs: Make btrfs_del_inode_ref take btrfs_inode 2017-02-14 15:50:54 +01:00
ulist.c btrfs: ulist: rename ulist_fini to ulist_release 2017-02-17 12:03:50 +01:00
ulist.h btrfs: ulist: rename ulist_fini to ulist_release 2017-02-17 12:03:50 +01:00
uuid-tree.c btrfs: return the actual error value from from btrfs_uuid_tree_iterate 2016-12-19 18:08:15 +01:00
volumes.c btrfs: use q which is already obtained from bdev_get_queue 2017-04-18 14:07:26 +02:00
volumes.h btrfs: drop redundant parameters from btrfs_map_sblock 2017-04-18 14:07:26 +02:00
xattr.c btrfs: fix over-80 lines introduced by previous cleanups 2017-02-14 15:50:57 +01:00
xattr.h
zlib.c btrfs: derive maximum output size in the compression implementation 2017-02-28 14:26:36 +01:00