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d8101a0c8a
linux-next/fs/btrfs
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Qu Wenruo d8101a0c8a btrfs: allow defrag to convert inline extents to regular extents 
Btrfs defaults to max_inline=2K to make small writes inlined into
metadata.

The default value is always a win, as even DUP/RAID1/RAID10 doubles the
metadata usage, it should still cause less physical space used compared
to a 4K regular extents.

But since the introduction of RAID1C3 and RAID1C4 it's no longer the case,
users may find inlined extents causing too much space wasted, and want
to convert those inlined extents back to regular extents.

Unfortunately defrag will unconditionally skip all inline extents, no
matter if the user is trying to converting them back to regular extents.

So this patch will add a small exception for defrag_collect_targets() to
allow defragging inline extents, if and only if the inlined extents are
larger than max_inline, allowing users to convert them to regular ones.

This also allows us to defrag extents like the following:

	item 6 key (257 EXTENT_DATA 0) itemoff 15794 itemsize 69
		generation 7 type 0 (inline)
		inline extent data size 48 ram_bytes 4096 compression 1 (zlib)
	item 7 key (257 EXTENT_DATA 4096) itemoff 15741 itemsize 53
		generation 7 type 1 (regular)
		extent data disk byte 13631488 nr 4096
		extent data offset 0 nr 16384 ram 16384
		extent compression 1 (zlib)

Previously we're unable to do any defrag, since the first extent is
inlined, and the second one has no extent to merge.

Now we can defrag it to just one single extent, saving 48 bytes metadata
space.

	item 6 key (257 EXTENT_DATA 0) itemoff 15810 itemsize 53
		generation 8 type 1 (regular)
		extent data disk byte 13635584 nr 4096
		extent data offset 0 nr 20480 ram 20480
		extent compression 1 (zlib)

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2022-05-17 20:15:25 +02:00
..
tests btrfs: turn fs_roots_radix in btrfs_fs_info into an XArray 2022-05-16 17:15:57 +02:00
acl.c btrfs: reserve correct number of items for inode creation 2022-05-16 17:03:08 +02:00
async-thread.c btrfs: simplify WQ_HIGHPRI handling in struct btrfs_workqueue 2022-05-16 17:03:15 +02:00
async-thread.h btrfs: simplify WQ_HIGHPRI handling in struct btrfs_workqueue 2022-05-16 17:03:15 +02:00
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: zoned: zone finish unused block group 2022-05-16 17:17:32 +02:00
block-group.h btrfs: zoned: properly finish block group on metadata write 2022-05-16 17:17:32 +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: move struct btrfs_dio_private to inode.c 2022-05-16 17:17:32 +02:00
check-integrity.c btrfs: check-integrity: simplify bio allocation in btrfsic_read_block 2022-05-16 17:03:12 +02:00
check-integrity.h btrfs: check-integrity: split submit_bio from btrfsic checking 2022-05-16 17:03:12 +02:00
compression.c btrfs: derive compression type from extent map during reads 2022-05-16 17:17:31 +02:00
compression.h btrfs: derive compression type from extent map during reads 2022-05-16 17:17:31 +02:00
ctree.c btrfs: sink parameter is_data to btrfs_set_disk_extent_flags 2022-05-16 17:17:31 +02:00
ctree.h btrfs: move struct btrfs_dio_private to inode.c 2022-05-16 17:17:32 +02:00
delalloc-space.c btrfs: avoid blocking on space revervation when doing nowait dio writes 2022-05-16 17:03:10 +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: turn delayed_nodes_tree into an XArray 2022-05-16 17:03:16 +02:00
delayed-inode.h btrfs: make btrfs_delayed_update_inode take btrfs_inode 2020-12-08 15:54:10 +01:00
delayed-ref.c btrfs: remove btrfs_delayed_extent_op::is_data 2022-05-16 17:17:31 +02:00
delayed-ref.h btrfs: remove btrfs_delayed_extent_op::is_data 2022-05-16 17:17:31 +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: add "0x" prefix for unsupported optional features 2022-05-17 20:15:25 +02:00
disk-io.h btrfs: remove unused parameter bio_flags from btrfs_wq_submit_bio 2022-05-16 17:17:31 +02:00
export.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
export.h btrfs: export helpers for subvolume name/id resolution 2020-03-23 17:01:42 +01:00
extent_io.c btrfs: zoned: properly finish block group on metadata write 2022-05-16 17:17:32 +02:00
extent_io.h btrfs: zoned: properly finish block group on metadata write 2022-05-16 17:17:32 +02:00
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
extent-io-tree.h btrfs: Convert from invalidatepage to invalidate_folio 2022-03-15 08:23:29 -04:00
extent-tree.c btrfs: zoned: introduce btrfs_zoned_bg_is_full 2022-05-16 17:17:32 +02:00
file-item.c btrfs: handle csum lookup errors properly on reads 2022-03-14 13:13:51 +01:00
file.c btrfs: add a btrfs_dio_rw wrapper 2022-05-16 17:17:32 +02:00
free-space-cache.c btrfs: use rbtree with leftmost node cached for tracking lowest block group 2022-05-16 17:03:13 +02:00
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: use rbtree with leftmost node cached for tracking lowest block group 2022-05-16 17:03:13 +02:00
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: do not account twice for inode ref when reserving metadata units 2022-05-17 20:15:25 +02:00
ioctl.c btrfs: allow defrag to convert inline extents to regular extents 2022-05-17 20:15:25 +02:00
Kconfig btrfs: use generic Kconfig option for 256kB page size limit 2022-01-20 08:52:55 +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
Makefile Kbuild: add -Wno-shift-negative-value where -Wextra is used 2022-03-13 17:30:31 +09:00
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: avoid blocking on space revervation when doing nowait dio writes 2022-05-16 17:03:10 +02:00
qgroup.h btrfs: avoid blocking on space revervation when doing nowait dio writes 2022-05-16 17:03:10 +02:00
raid56.c btrfs: use a normal workqueue for rmw_workers 2022-05-16 17:03:16 +02:00
raid56.h btrfs: raid56: make raid56_add_scrub_pages() subpage compatible 2022-05-16 17:03:15 +02:00
rcu-string.h btrfs: rcu-string: Replace zero-length array with flexible-array member 2020-03-23 17:01:53 +01:00
ref-verify.c btrfs: stop accessing ->extent_root directly 2022-01-03 15:09:49 +01:00
ref-verify.h
reflink.c btrfs: add and use helper to assert an inode range is clean 2022-05-16 17:03:09 +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: remove unnecessary check of iput argument 2022-05-16 17:03:12 +02:00
root-tree.c btrfs: avoid blocking on space revervation when doing nowait dio writes 2022-05-16 17:03:10 +02:00
scrub.c btrfs: scrub: move scrub_remap_extent() call into scrub_extent() 2022-05-16 17:17:31 +02:00
send.c btrfs: send: avoid trashing the page cache 2022-05-17 20:14:54 +02:00
send.h btrfs: reuse existing inode from btrfs_ioctl 2022-03-14 13:13:46 +01:00
space-info.c btrfs: make the bg_reclaim_threshold per-space info 2022-05-16 17:03:11 +02:00
space-info.h btrfs: move definition of btrfs_raid_types to volumes.h 2022-05-16 17:03:16 +02:00
struct-funcs.c btrfs: add special case to setget helpers for 64k pages 2021-08-23 13:18:58 +02:00
subpage.c btrfs: remove unnecessary type casts 2022-05-16 17:03:11 +02:00
subpage.h btrfs: make nodesize >= PAGE_SIZE case to reuse the non-subpage routine 2022-05-16 17:03:11 +02:00
super.c btrfs: use normal workqueues for scrub 2022-05-16 17:03:15 +02:00
sysfs.c btrfs: change the bg_reclaim_threshold valid region from 0 to 100 2022-05-16 17:03:11 +02:00
sysfs.h btrfs: split and refactor btrfs_sysfs_remove_devices_dir 2020-10-07 12:12:21 +02:00
transaction.c btrfs: turn fs_roots_radix in btrfs_fs_info into an XArray 2022-05-16 17:15:57 +02:00
transaction.h btrfs: pass btrfs_fs_info for deleting snapshots and cleaner 2022-03-14 13:13:52 +01:00
tree-checker.c btrfs: tree-checker: check extent buffer owner against owner rootid 2022-05-16 17:03:09 +02:00
tree-checker.h btrfs: tree-checker: check extent buffer owner against owner rootid 2022-05-16 17:03:09 +02:00
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 unnecessary check of iput argument 2022-05-16 17:03:12 +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 ilog2() to replace if () branches for btrfs_bg_flags_to_raid_index() 2022-05-16 17:03:16 +02:00
volumes.h btrfs: use ilog2() to replace if () branches for btrfs_bg_flags_to_raid_index() 2022-05-16 17:03:16 +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: fix comparison of alloc_offset vs meta_write_pointer 2022-05-17 20:15:25 +02:00
zoned.h btrfs: zoned: properly finish block group on metadata write 2022-05-16 17:17:32 +02:00
zstd.c btrfs: use non-bh spin_lock in zstd timer callback 2022-05-16 17:03:13 +02:00