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51899412dd
linux/fs/btrfs
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Josef Bacik 51899412dd btrfs: introduce btrfs_path::recurse 
Our current tree locking stuff allows us to recurse with read locks if
we're already holding the write lock.  This is necessary for the space
cache inode, as we could be holding a lock on the root_tree root when we
need to cache a block group, and thus need to be able to read down the
root_tree to read in the inode cache.

We can get away with this in our current locking, but we won't be able
to with a rwsem.  Handle this by purposefully annotating the places
where we require recursion, so that in the future we can maybe come up
with a way to avoid the recursion.  In the case of the free space inode,
this will be superseded by the free space tree.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-10-07 12:12:16 +02:00
..
tests btrfs: make btrfs_set_extent_delalloc take btrfs_inode 2020-07-27 12:55:35 +02:00
acl.c
async-thread.c Btrfs: fix crash during unmount due to race with delayed inode workers 2020-03-23 17:01:51 +01:00
async-thread.h Btrfs: fix crash during unmount due to race with delayed inode workers 2020-03-23 17:01:51 +01:00
backref.c btrfs: remove unnecessarily shadowed variables 2020-10-07 12:06:55 +02:00
backref.h btrfs: rename BTRFS_ROOT_REF_COWS to BTRFS_ROOT_SHAREABLE 2020-05-25 11:25:35 +02:00
block-group.c btrfs: make read_block_group_item return void 2020-10-07 12:06:56 +02:00
block-group.h btrfs: convert block group refcount to refcount_t 2020-07-27 12:55:42 +02:00
block-rsv.c btrfs: rename BTRFS_ROOT_REF_COWS to BTRFS_ROOT_SHAREABLE 2020-05-25 11:25:35 +02:00
block-rsv.h btrfs: Remove __ prefix from btrfs_block_rsv_release 2020-03-23 17:01:55 +01:00
btrfs_inode.h btrfs: make fast fsyncs wait only for writeback 2020-10-07 12:06:56 +02:00
check-integrity.c btrfs: check-integrity: remove unnecessary failure messages during memory allocation 2020-07-27 12:55:21 +02:00
check-integrity.h btrfs: remove btrfsic_submit_bh() 2020-03-23 17:01:39 +01:00
compression.c btrfs: compression: move declarations to header 2020-10-07 12:06:55 +02:00
compression.h btrfs: compression: move declarations to header 2020-10-07 12:06:55 +02:00
ctree.c btrfs: introduce btrfs_path::recurse 2020-10-07 12:12:16 +02:00
ctree.h btrfs: introduce btrfs_path::recurse 2020-10-07 12:12:16 +02:00
delalloc-space.c btrfs: add btrfs_reserve_data_bytes and use it 2020-10-07 12:06:52 +02:00
delalloc-space.h btrfs: make btrfs_delalloc_reserve_space take btrfs_inode 2020-07-27 12:55:36 +02:00
delayed-inode.c btrfs: qgroup: fix wrong qgroup metadata reserve for delayed inode 2020-10-07 12:12:13 +02:00
delayed-inode.h btrfs: delayed-inode: Replace zero-length array with flexible-array member 2020-03-23 17:01:53 +01:00
delayed-ref.c btrfs: Remove __ prefix from btrfs_block_rsv_release 2020-03-23 17:01:55 +01:00
delayed-ref.h
dev-replace.c btrfs: change nr to u64 in btrfs_start_delalloc_roots 2020-10-07 12:06:50 +02:00
dev-replace.h
dir-item.c
discard.c btrfs: discard: add missing put when grabbing block group from unused list 2020-07-07 16:06:28 +02:00
discard.h btrfs: discard: Use the correct style for SPDX License Identifier 2020-04-20 17:43:42 +02:00
disk-io.c btrfs: rework error detection in init_tree_roots 2020-10-07 12:12:14 +02:00
disk-io.h btrfs: preallocate anon block device at first phase of snapshot creation 2020-07-27 12:55:38 +02:00
export.c btrfs: simplify iget helpers 2020-05-25 11:25:37 +02:00
export.h btrfs: export helpers for subvolume name/id resolution 2020-03-23 17:01:42 +01:00
extent_io.c btrfs: rename extent_buffer::lock_nested to extent_buffer::lock_recursed 2020-10-07 12:12:15 +02:00
extent_io.h btrfs: rename extent_buffer::lock_nested to extent_buffer::lock_recursed 2020-10-07 12:12:15 +02:00
extent_map.c Btrfs: fix race between using extent maps and merging them 2020-02-12 17:16:46 +01:00
extent_map.h btrfs: remove extent_map::bdev 2019-11-18 23:43:44 +01:00
extent-io-tree.h btrfs: add owner and fs_info to alloc_state io_tree 2020-10-07 12:06:56 +02:00
extent-tree.c btrfs: extent-tree: kill the BUG_ON() in insert_inline_extent_backref() 2020-10-07 12:12:14 +02:00
file-item.c btrfs: make btrfs_csum_one_bio takae btrfs_inode 2020-07-27 12:55:26 +02:00
file.c btrfs: dio iomap DSYNC workaround 2020-10-07 12:06:57 +02:00
free-space-cache.c btrfs: delete duplicated words + other fixes in comments 2020-10-07 12:06:50 +02:00
free-space-cache.h btrfs: let btrfs_return_cluster_to_free_space() return void 2020-07-27 12:55:21 +02:00
free-space-tree.c btrfs: block-group: fix free-space bitmap threshold 2020-08-27 13:37:54 +02:00
free-space-tree.h
inode-item.c
inode-map.c btrfs: make btrfs_delalloc_reserve_space take btrfs_inode 2020-07-27 12:55:36 +02:00
inode-map.h
inode.c btrfs: introduce btrfs_path::recurse 2020-10-07 12:12:16 +02:00
ioctl.c btrfs: qgroup: fix qgroup meta rsv leak for subvolume operations 2020-10-07 12:12:13 +02:00
Kconfig btrfs: switch to iomap for direct IO 2020-10-07 12:06:57 +02:00
locking.c btrfs: introduce btrfs_path::recurse 2020-10-07 12:12:16 +02:00
locking.h btrfs: introduce btrfs_path::recurse 2020-10-07 12:12:16 +02:00
lzo.c
Makefile Btrfs: move all reflink implementation code into its own file 2020-03-23 17:01:54 +01:00
misc.h btrfs: rename tree_entry to rb_simple_node and export it 2020-05-25 11:25:19 +02:00
ordered-data.c btrfs: make fast fsyncs wait only for writeback 2020-10-07 12:06:56 +02:00
ordered-data.h btrfs: make fast fsyncs wait only for writeback 2020-10-07 12:06:56 +02:00
orphan.c
print-tree.c btrfs: require only sector size alignment for parent eb bytenr 2020-09-07 14:51:05 +02:00
print-tree.h
props.c btrfs: simplify iget helpers 2020-05-25 11:25:37 +02:00
props.h
qgroup.c btrfs: delete duplicated words + other fixes in comments 2020-10-07 12:06:50 +02:00
qgroup.h btrfs: qgroup: export qgroups in sysfs 2020-07-27 12:55:37 +02:00
raid56.c btrfs: raid56: remove out label in __raid56_parity_recover 2020-07-27 12:55:44 +02:00
raid56.h
rcu-string.h btrfs: rcu-string: Replace zero-length array with flexible-array member 2020-03-23 17:01:53 +01:00
reada.c btrfs: switch seed device to list api 2020-10-07 12:06:58 +02:00
ref-verify.c btrfs: ref-verify: fix memory leak in add_block_entry 2020-07-27 12:55:43 +02:00
ref-verify.h
reflink.c btrfs: reduce contention on log trees when logging checksums 2020-07-27 12:55:45 +02:00
reflink.h Btrfs: move all reflink implementation code into its own file 2020-03-23 17:01:54 +01:00
relocation.c btrfs: relocation: review the call sites which can be interrupted by signal 2020-07-27 12:55:45 +02:00
root-tree.c btrfs: qgroup: fix qgroup meta rsv leak for subvolume operations 2020-10-07 12:12:13 +02:00
scrub.c btrfs: scrub: rename ratelimit state varaible to avoid shadowing 2020-10-07 12:06:55 +02:00
send.c btrfs: send: remove indirect callback parameter for changed_cb 2020-10-07 12:06:55 +02:00
send.h
space-info.c btrfs: fix possible infinite loop in data async reclaim 2020-10-07 12:06:54 +02:00
space-info.h btrfs: add btrfs_reserve_data_bytes and use it 2020-10-07 12:06:52 +02:00
struct-funcs.c btrfs: update documentation of set/get helpers 2020-05-25 11:25:35 +02:00
super.c btrfs: do async reclaim for data reservations 2020-10-07 12:06:54 +02:00
sysfs.c btrfs: simplify setting/clearing fs_info to btrfs_fs_devices 2020-10-07 12:06:58 +02:00
sysfs.h btrfs: remove const from btrfs_feature_set_name 2020-10-07 12:06:55 +02:00
transaction.c btrfs: make fast fsyncs wait only for writeback 2020-10-07 12:06:56 +02:00
transaction.h btrfs: dio iomap DSYNC workaround 2020-10-07 12:06:57 +02:00
tree-checker.c btrfs: tree-checker: fix the error message for transid error 2020-08-27 14:16:05 +02:00
tree-checker.h
tree-defrag.c btrfs: remove unused btrfs_root::defrag_trans_start 2020-07-27 12:55:28 +02:00
tree-log.c btrfs: make fast fsyncs wait only for writeback 2020-10-07 12:06:56 +02:00
tree-log.h btrfs: make fast fsyncs wait only for writeback 2020-10-07 12:06:56 +02:00
ulist.c
ulist.h
uuid-tree.c btrfs: simplify root lookup by id 2020-05-25 11:25:36 +02:00
volumes.c btrfs: don't opencode sync_blockdev in btrfs_init_new_device 2020-10-07 12:12:15 +02:00
volumes.h btrfs: switch seed device to list api 2020-10-07 12:06:58 +02:00
xattr.c
xattr.h
zlib.c btrfs: use larger zlib buffer for s390 hardware compression 2020-01-31 10:30:40 -08:00
zstd.c