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David Sterba 129827e300 btrfs: dev-replace: swich locking to rw semaphore 
This is the first part of removing the custom locking and waiting scheme
used for device replace. It was probably copied from extent buffer
locking, but there's nothing that would require more than is provided by
the common locking primitives.

The rw spinlock protects waiting tasks counter in case of incompatible
locks and the waitqueue. Same as rw semaphore.

This patch only switches the locking primitive, for better
bisectability.  There should be no functional change other than the
overhead of the locking and potential sleeping instead of spinning when
the lock is contended.

Signed-off-by: David Sterba <dsterba@suse.com>
 		2018-12-17 14:51:44 +01:00
..
tests btrfs: remove always true if branch in find_delalloc_range 2018-12-17 14:51:44 +01:00
Kconfig btrfs: add SPDX header to Kconfig 2018-04-12 16:29:55 +02:00
Makefile btrfs: Remove custom crc32c init code 2018-03-26 15:09:39 +02:00
acl.c btrfs: remove unnecessary curly braces in btrfs_get_acl 2018-08-06 13:12:41 +02:00
async-thread.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
async-thread.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
backref.c btrfs: Remove needless tree locking in iterate_inode_extrefs 2018-12-17 14:51:30 +01:00
backref.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
btrfs_inode.h Btrfs: fix fsync of files with multiple hard links in new directories 2018-12-17 14:51:43 +01:00
check-integrity.c btrfs: Remove fsid/metadata_fsid fields from btrfs_info 2018-12-17 14:51:37 +01:00
check-integrity.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
compression.c btrfs: Refactor btrfs_merge_bio_hook 2018-12-17 14:51:42 +01:00
compression.h btrfs: compression: Add linux/sizes.h for compression.h 2018-05-29 18:13:00 +02:00
ctree.c btrfs: Remove fsid/metadata_fsid fields from btrfs_info 2018-12-17 14:51:37 +01:00
ctree.h btrfs: dev-replace: swich locking to rw semaphore 2018-12-17 14:51:44 +01:00
dedupe.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
delayed-inode.c Btrfs: kill btrfs_clear_path_blocking 2018-10-15 17:23:38 +02:00
delayed-inode.h Btrfs: delayed-inode: use rb_first_cached for ins_root and del_root 2018-10-15 17:23:33 +02:00
delayed-ref.c btrfs: delayed-ref: extract find_first_ref_head from find_ref_head 2018-10-17 19:21:00 +02:00
delayed-ref.h btrfs: delayed-ref: pass delayed_refs directly to btrfs_delayed_ref_lock 2018-10-15 17:23:41 +02:00
dev-replace.c btrfs: dev-replace: swich locking to rw semaphore 2018-12-17 14:51:44 +01:00
dev-replace.h btrfs: mark btrfs_dev_replace_start as static 2018-12-17 14:51:34 +01:00
dir-item.c btrfs: Remove root parameter from btrfs_insert_dir_item 2018-10-15 17:23:25 +02:00
disk-io.c btrfs: dev-replace: swich locking to rw semaphore 2018-12-17 14:51:44 +01:00
disk-io.h btrfs: drop extra enum initialization where using defaults 2018-12-17 14:51:43 +01:00
export.c btrfs: Remove 'objectid' member from struct btrfs_root 2018-10-15 17:23:25 +02:00
export.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
extent-tree.c Btrfs: allow clear_extent_dirty() to receive a cached extent state record 2018-12-17 14:51:38 +01:00
extent_io.c btrfs: remove always true if branch in find_delalloc_range 2018-12-17 14:51:44 +01:00
extent_io.h btrfs: remove always true if branch in find_delalloc_range 2018-12-17 14:51:44 +01:00
extent_map.c Btrfs: extent_map: use rb_first_cached 2018-10-15 17:23:33 +02:00
extent_map.h btrfs: switch EXTENT_FLAG_* to enums 2018-12-17 14:51:43 +01:00
file-item.c btrfs: replace btrfs_io_bio::end_io with a simple helper 2018-12-17 14:51:40 +01:00
file.c Btrfs: remove no longer used io_err from btrfs_log_ctx 2018-12-17 14:51:31 +01:00
free-space-cache.c Btrfs: fix deadlock on tree root leaf when finding free extent 2018-11-06 16:42:32 +01:00
free-space-cache.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
free-space-tree.c btrfs: use EXPORT_FOR_TESTS for conditionally exported functions 2018-12-17 14:51:37 +01:00
free-space-tree.h btrfs: Remove fs_info argument from add_to_free_space_tree 2018-05-28 18:07:36 +02:00
inode-item.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
inode-map.c btrfs: prune unused includes 2018-08-06 13:12:43 +02:00
inode-map.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
inode.c btrfs: Fix error handling in btrfs_cleanup_ordered_extents 2018-12-17 14:51:44 +01:00
ioctl.c btrfs: Remove fsid/metadata_fsid fields from btrfs_info 2018-12-17 14:51:37 +01:00
locking.c btrfs: replace waitqueue_actvie with cond_wake_up 2018-05-28 18:23:09 +02:00
locking.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
lzo.c btrfs: lzo: Harden inline lzo compressed extent decompression 2018-05-30 16:46:43 +02:00
math.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
ordered-data.c Btrfs: remove no longer used stuff for tracking pending ordered extents 2018-12-17 14:51:25 +01:00
ordered-data.h btrfs: switch BTRFS_ORDERED_* to enums 2018-12-17 14:51:43 +01:00
orphan.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
print-tree.c btrfs: annotate unlikely branches after V0 extent type removal 2018-08-06 13:12:41 +02:00
print-tree.h btrfs: print-tree: debugging output enhancement 2018-04-20 19:18:16 +02:00
props.c btrfs: property: Set incompat flag if lzo/zstd compression is set 2018-05-17 14:18:25 +02:00
props.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
qgroup.c Btrfs: fix deadlock when enabling quotas due to concurrent snapshot creation 2018-12-17 14:51:39 +01:00
qgroup.h btrfs: drop extra enum initialization where using defaults 2018-12-17 14:51:43 +01:00
raid56.c btrfs: raid56: catch errors from full_stripe_write 2018-08-06 13:12:45 +02:00
raid56.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
rcu-string.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
reada.c btrfs: reada: reorder dev-replace locks before radix tree preload 2018-12-17 14:51:44 +01:00
ref-verify.c btrfs: Remove 'objectid' member from struct btrfs_root 2018-10-15 17:23:25 +02:00
ref-verify.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
relocation.c btrfs: add helper to describe block group flags 2018-12-17 14:51:39 +01:00
root-tree.c btrfs: Remove fs_info from btrfs_add_root_ref 2018-08-06 13:13:00 +02:00
scrub.c Btrfs: fix deadlock with memory reclaim during scrub 2018-12-17 14:51:41 +01:00
send.c Btrfs: send, fix infinite loop due to directory rename dependencies 2018-11-21 17:03:50 +01:00
send.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
struct-funcs.c btrfs: prune unused includes 2018-08-06 13:12:43 +02:00
super.c btrfs: Remove fsid/metadata_fsid fields from btrfs_info 2018-12-17 14:51:37 +01:00
sysfs.c btrfs: Add sysfs support for metadata_uuid feature 2018-12-17 14:51:37 +01:00
sysfs.h btrfs: drop extra enum initialization where using defaults 2018-12-17 14:51:43 +01:00
transaction.c btrfs: cleanup the useless DEFINE_WAIT in cleanup_transaction 2018-12-17 14:51:42 +01:00
transaction.h btrfs: drop extra enum initialization where using defaults 2018-12-17 14:51:43 +01:00
tree-checker.c btrfs: tree-checker: Don't check max block group size as current max chunk size limit is unreliable 2018-12-04 15:05:30 +01:00
tree-checker.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
tree-defrag.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
tree-log.c Btrfs: fix fsync of files with multiple hard links in new directories 2018-12-17 14:51:43 +01:00
tree-log.h Btrfs: remove no longer used io_err from btrfs_log_ctx 2018-12-17 14:51:31 +01:00
ulist.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
ulist.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
uuid-tree.c btrfs: Remove fs_info argument from btrfs_uuid_tree_rem 2018-05-30 16:46:53 +02:00
volumes.c btrfs: Refactor btrfs_merge_bio_hook 2018-12-17 14:51:42 +01:00
volumes.h btrfs: remove btrfs_bio_end_io_t 2018-12-17 14:51:40 +01:00
xattr.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
xattr.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
zlib.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
zstd.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00