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OpenCloudOS-Kernel/fs/btrfs
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Filipe Manana 55961c8abf btrfs: remove ordered extent check and wait during hole punching and zero range 
For hole punching and zero range we have this loop that checks if we have
ordered extents after locking the file range, and if so unlock the range,
wait for ordered extents, and retry until we don't find more ordered
extents.

This logic was needed in the past because:

1) Direct IO writes within the i_size boundary did not take the inode's
   VFS lock. This was because that lock used to be a mutex, then some
   years ago it was switched to a rw semaphore (commit 9902af79c0
   ("parallel lookups: actual switch to rwsem")), and then btrfs was
   changed to take the VFS inode's lock in shared mode for writes that
   don't cross the i_size boundary (commit e9adabb971 ("btrfs: use
   shared lock for direct writes within EOF"));

2) We could race with memory mapped writes, because memory mapped writes
   don't acquire the inode's VFS lock. We don't have that race anymore,
   as we have a rw semaphore to synchronize memory mapped writes with
   fallocate (and reflinking too). That change happened with commit
   8d9b4a162a ("btrfs: exclude mmap from happening during all
   fallocate operations").

So stop looking for ordered extents after locking the file range when
doing hole punching and zero range operations.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 		2022-05-16 17:03:09 +02:00
..
tests btrfs: assert we have a write lock when removing and replacing extent maps 2022-03-14 13:13:50 +01:00
Kconfig btrfs: use generic Kconfig option for 256kB page size limit 2022-01-20 08:52:55 +02:00
Makefile Kbuild: add -Wno-shift-negative-value where -Wextra is used 2022-03-13 17:30:31 +09:00
acl.c btrfs: reserve correct number of items for inode creation 2022-05-16 17:03:08 +02:00
async-thread.c btrfs: fix memory ordering between normal and ordered work functions 2021-11-16 16:50:23 +01:00
async-thread.h
…
backref.c btrfs: unify the error handling pattern for read_tree_block() 2022-03-14 13:13:53 +01:00
backref.h btrfs: remove ignore_offset argument from btrfs_find_all_roots() 2021-08-23 13:19:01 +02:00
block-group.c btrfs: use btrfs_for_each_slot in find_first_block_group 2022-05-16 17:03:07 +02:00
block-group.h btrfs: zoned: activate block group only for extent allocation 2022-04-06 00:50:41 +02:00
block-rsv.c btrfs: reserve extra space for the free space tree 2022-01-07 14:18:25 +01:00
block-rsv.h btrfs: init root block_rsv at init root time 2022-01-03 15:09:48 +01:00
btrfs_inode.h btrfs: export a helper for compression hard check 2022-04-27 22:15:40 +02:00
check-integrity.c block: remove genhd.h 2022-02-02 07:49:59 -07:00
check-integrity.h
…
compression.c btrfs: fix btrfs_submit_compressed_write cgroup attribution 2022-04-06 00:50:51 +02:00
compression.h btrfs: track compressed bio errors as blk_status_t 2022-03-14 13:13:51 +01:00
ctree.c btrfs: introduce btrfs_for_each_slot iterator macro 2022-05-16 17:03:07 +02:00
ctree.h btrfs: move common inode creation code into btrfs_create_new_inode() 2022-05-16 17:03:08 +02:00
delalloc-space.c btrfs: support different disk extent size for delalloc 2022-03-14 13:13:51 +01:00
delalloc-space.h
…
delayed-inode.c btrfs: add an inode-item.h 2022-01-07 14:18:23 +01:00
delayed-inode.h btrfs: make btrfs_delayed_update_inode take btrfs_inode 2020-12-08 15:54:10 +01:00
delayed-ref.c btrfs: reserve extra space for the free space tree 2022-01-07 14:18:25 +01:00
delayed-ref.h btrfs: make btrfs_ref::real_root optional 2021-10-26 19:08:06 +02:00
dev-replace.c btrfs: use a local variable for fs_devices pointer in btrfs_dev_replace_finishing 2022-05-16 17:03:08 +02:00
dev-replace.h btrfs: zoned: mark block groups to copy for device-replace 2021-02-09 02:46:07 +01:00
dir-item.c btrfs: use btrfs_for_each_slot in btrfs_search_dir_index_item 2022-05-16 17:03:07 +02:00
discard.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
discard.h btrfs: cleanup btrfs_discard_update_discardable usage 2020-12-08 15:54:02 +01:00
disk-io.c btrfs: remove trivial wrapper btrfs_read_buffer() 2022-05-16 17:03:07 +02:00
disk-io.h btrfs: remove trivial wrapper btrfs_read_buffer() 2022-05-16 17:03:07 +02:00
export.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
export.h
…
extent-io-tree.h btrfs: Convert from invalidatepage to invalidate_folio 2022-03-15 08:23:29 -04:00
extent-tree.c btrfs: zoned: activate block group only for extent allocation 2022-04-06 00:50:41 +02:00
extent_io.c btrfs: warn when extent buffer leak test fails 2022-05-16 17:03:08 +02:00
extent_io.h btrfs: fix qgroup reserve overflow the qgroup limit 2022-03-23 23:34:15 +01:00
extent_map.c btrfs: assert we have a write lock when removing and replacing extent maps 2022-03-14 13:13:50 +01:00
extent_map.h btrfs: defrag: don't use merged extent map for their generation check 2022-02-23 17:43:13 +01:00
file-item.c btrfs: handle csum lookup errors properly on reads 2022-03-14 13:13:51 +01:00
file.c btrfs: remove ordered extent check and wait during hole punching and zero range 2022-05-16 17:03:09 +02:00
free-space-cache.c btrfs: add inode to truncate control 2022-01-07 14:18:24 +01:00
free-space-cache.h btrfs: change name and type of private member of btrfs_free_space_ctl 2022-01-03 15:09:50 +01:00
free-space-tree.c btrfs: add support for multiple global roots 2022-03-14 13:13:49 +01:00
free-space-tree.h
…
inode-item.c btrfs: make should_throttle loop local in btrfs_truncate_inode_items 2022-01-07 14:18:25 +01:00
inode-item.h btrfs: add inode to truncate control 2022-01-07 14:18:24 +01:00
inode.c btrfs: restore inode creation before xattr setting 2022-05-16 17:03:09 +02:00
ioctl.c btrfs: move common inode creation code into btrfs_create_new_inode() 2022-05-16 17:03:08 +02:00
locking.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
locking.h btrfs: assert that extent buffers are write locked instead of only locked 2021-10-26 19:08:02 +02:00
lzo.c btrfs: add lzo workspace buffer length constants 2022-03-14 13:13:50 +01:00
misc.h btrfs: use correct header for div_u64 in misc.h 2021-09-07 14:29:50 +02:00
ordered-data.c btrfs: add BTRFS_IOC_ENCODED_WRITE 2022-03-14 13:13:51 +01:00
ordered-data.h btrfs: add BTRFS_IOC_ENCODED_WRITE 2022-03-14 13:13:51 +01:00
orphan.c
…
print-tree.c btrfs: unify the error handling pattern for read_tree_block() 2022-03-14 13:13:53 +01:00
print-tree.h btrfs: print the actual offset in btrfs_root_name 2021-01-07 17:25:05 +01:00
props.c btrfs: move common inode creation code into btrfs_create_new_inode() 2022-05-16 17:03:08 +02:00
props.h btrfs: move common inode creation code into btrfs_create_new_inode() 2022-05-16 17:03:08 +02:00
qgroup.c btrfs: remove trivial wrapper btrfs_read_buffer() 2022-05-16 17:03:07 +02:00
qgroup.h btrfs: fix lock inversion problem when doing qgroup extent tracing 2021-07-22 15:50:07 +02:00
raid56.c btrfs: remove btrfs_raid_bio::fs_info member 2021-10-26 19:08:03 +02:00
raid56.h btrfs: remove btrfs_raid_bio::fs_info member 2021-10-26 19:08:03 +02:00
rcu-string.h
…
ref-verify.c btrfs: stop accessing ->extent_root directly 2022-01-03 15:09:49 +01:00
ref-verify.h
…
reflink.c btrfs: remove inode_dio_wait() calls when starting reflink operations 2022-05-16 17:03:09 +02:00
reflink.h
…
relocation.c btrfs: unify the error handling pattern for read_tree_block() 2022-03-14 13:13:53 +01:00
root-tree.c btrfs: do not start relocation until in progress drops are done 2022-03-02 16:52:39 +01:00
scrub.c btrfs: scrub: rename scrub_bio::pagev and related members 2022-05-16 17:03:07 +02:00
send.c btrfs: use btrfs_for_each_slot in btrfs_unlink_all_paths 2022-05-16 17:03:08 +02:00
send.h btrfs: reuse existing inode from btrfs_ioctl 2022-03-14 13:13:46 +01:00
space-info.c btrfs: add lockdep_assert_held to need_preemptive_reclaim 2022-03-14 13:13:53 +01:00
space-info.h btrfs: change root to fs_info for btrfs_reserve_metadata_bytes 2022-01-03 15:09:45 +01:00
struct-funcs.c btrfs: add special case to setget helpers for 64k pages 2021-08-23 13:18:58 +02:00
subpage.c btrfs: subpage: fix a wrong check on subpage->writers 2022-03-02 16:51:39 +01:00
subpage.h btrfs: rework page locking in __extent_writepage() 2021-10-26 19:08:05 +02:00
super.c btrfs: add filesystems state details to error messages 2022-03-14 13:13:52 +01:00
sysfs.c btrfs: sysfs: export the balance paused state of exclusive operation 2022-05-05 21:05:56 +02:00
sysfs.h btrfs: split and refactor btrfs_sysfs_remove_devices_dir 2020-10-07 12:12:21 +02:00
transaction.c btrfs: pass btrfs_fs_info for deleting snapshots and cleaner 2022-03-14 13:13:52 +01:00
transaction.h btrfs: pass btrfs_fs_info for deleting snapshots and cleaner 2022-03-14 13:13:52 +01:00
tree-checker.c btrfs: add support for multiple global roots 2022-03-14 13:13:49 +01:00
tree-checker.h
…
tree-defrag.c btrfs: remove unnecessary extent root check in btrfs_defrag_leaves 2022-01-03 15:09:48 +01:00
tree-log.c btrfs: remove trivial wrapper btrfs_read_buffer() 2022-05-16 17:03:07 +02:00
tree-log.h btrfs: avoid inode logging during rename and link when possible 2022-03-14 13:13:48 +01:00
tree-mod-log.c btrfs: fix race when picking most recent mod log operation for an old root 2021-04-20 19:27:17 +02:00
tree-mod-log.h btrfs: add and use helper to get lowest sequence number for the tree mod log 2021-04-19 17:25:17 +02:00
ulist.c
…
ulist.h
…
uuid-tree.c btrfs: drop the _nr from the item helpers 2022-01-03 15:09:43 +01:00
verity.c btrfs: drop the _nr from the item helpers 2022-01-03 15:09:43 +01:00
volumes.c btrfs: use btrfs_for_each_slot in btrfs_read_chunk_tree 2022-05-16 17:03:08 +02:00
volumes.h btrfs: fix direct I/O read repair for split bios 2022-04-19 15:44:56 +02:00
xattr.c btrfs: use btrfs_for_each_slot in btrfs_listxattr 2022-05-16 17:03:08 +02:00
xattr.h
…
zlib.c Revert "btrfs: compression: drop kmap/kunmap from zlib" 2021-10-29 13:03:05 +02:00
zoned.c btrfs: zoned: activate block group properly on unlimited active zone device 2022-05-05 21:05:56 +02:00
zoned.h btrfs: zoned: use dedicated lock for data relocation 2022-04-21 16:06:24 +02:00
zstd.c lib: zstd: Add kernel-specific API 2021-11-08 16:55:21 -08:00