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linux-stable/fs/btrfs
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Boris Burkov 4eb4e85c4f btrfs: retry block group reclaim without infinite loop 
If inc_block_group_ro systematically fails (e.g. due to ETXTBUSY from
swap) or btrfs_relocate_chunk systematically fails (from lack of
space), then this worker becomes an infinite loop.

At the very least, this strands the cleaner thread, but can also result
in hung tasks/RCU stalls on PREEMPT_NONE kernels and if the
reclaim_bgs_lock mutex is not contended.

I believe the best long term fix is to manage reclaim via work queue,
where we queue up a relocation on the triggering condition and re-queue
on failure. In the meantime, this is an easy fix to apply to avoid the
immediate pain.

Fixes: 7e27180994 ("btrfs: reinsert BGs failed to reclaim")
CC: stable@vger.kernel.org # 6.6+
Signed-off-by: Boris Burkov <boris@bur.io>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2024-06-13 20:43:45 +02:00
..
tests btrfs: use btrfs_is_testing() everywhere 2024-05-07 21:31:07 +02:00
accessors.c btrfs: remove unused included headers 2024-03-04 16:24:46 +01:00
accessors.h btrfs: move balance args conversion helpers to volumes.c 2024-03-04 16:24:52 +01:00
acl.c btrfs: remove unused included headers 2024-03-04 16:24:46 +01:00
acl.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
async-thread.c btrfs: remove unused included headers 2024-03-04 16:24:46 +01:00
async-thread.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
backref.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
backref.h btrfs: uninline some static inline helpers from backref.h 2024-03-04 16:24:53 +01:00
bio.c btrfs: introduce offload_csum_mode to tweak checksum offloading behavior 2024-03-04 16:24:52 +01:00
bio.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
block-group.c btrfs: retry block group reclaim without infinite loop 2024-06-13 20:43:45 +02:00
block-group.h btrfs: mark btrfs_put_caching_control() static 2024-03-05 17:13:23 +01:00
block-rsv.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
block-rsv.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
btrfs_inode.h btrfs: ensure fast fsync waits for ordered extents after a write failure 2024-05-28 16:35:12 +02:00
compression.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
compression.h btrfs: compression: migrate compression/decompression paths to folios 2024-05-07 21:31:02 +02:00
ctree.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
ctree.h btrfs: add forward declarations and headers, part 3 2024-03-04 16:24:49 +01:00
defrag.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
defrag.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
delalloc-space.c btrfs: remove unused included headers 2024-03-04 16:24:46 +01:00
delalloc-space.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
delayed-inode.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
delayed-inode.h btrfs: uninline btrfs_init_delayed_root() 2024-03-04 16:24:53 +01:00
delayed-ref.c btrfs: replace btrfs_delayed_*_ref with btrfs_*_ref 2024-05-07 21:31:05 +02:00
delayed-ref.h btrfs: replace btrfs_delayed_*_ref with btrfs_*_ref 2024-05-07 21:31:05 +02:00
dev-replace.c for-6.9-tag 2024-03-12 12:28:34 -07:00
dev-replace.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
dir-item.c btrfs: abort transaction on generation mismatch when marking eb as dirty 2023-10-12 16:44:07 +02:00
dir-item.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
discard.c btrfs: unexport btrfs_run_discard_work and make it static 2023-06-19 13:59:25 +02:00
discard.h btrfs: unexport btrfs_run_discard_work and make it static 2023-06-19 13:59:25 +02:00
disk-io.c btrfs: fix leak of qgroup extent records after transaction abort 2024-06-05 18:06:54 +02:00
disk-io.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
export.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
export.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
extent-io-tree.c btrfs: rename err to ret in convert_extent_bit() 2024-05-07 21:31:01 +02:00
extent-io-tree.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
extent-tree.c btrfs: fix end of tree detection when searching for data extent ref 2024-05-15 17:57:39 +02:00
extent-tree.h btrfs: add forward declarations and headers, part 3 2024-03-04 16:24:49 +01:00
extent_io.c btrfs: protect folio::private when attaching extent buffer folios 2024-06-06 21:42:22 +02:00
extent_io.h btrfs: add a cached state to extent_clear_unlock_delalloc 2024-05-07 21:31:10 +02:00
extent_map.c btrfs: add tracepoints for extent map shrinker events 2024-05-07 21:31:07 +02:00
extent_map.h btrfs: add extra comments on extent_map members 2024-05-07 21:31:08 +02:00
file-item.c btrfs: simplify the inline extent map creation 2024-05-07 21:31:08 +02:00
file-item.h btrfs: remove search_commit parameter from btrfs_lookup_csums_list() 2024-05-07 21:31:03 +02:00
file.c btrfs: ensure fast fsync waits for ordered extents after a write failure 2024-05-28 16:35:12 +02:00
file.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
free-space-cache.c btrfs: remove SLAB_MEM_SPREAD flag use 2024-03-05 17:13:23 +01:00
free-space-cache.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
free-space-tree.c btrfs: move transaction abort to the error site btrfs_rebuild_free_space_tree() 2024-03-04 16:24:48 +01:00
free-space-tree.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
fs.c
fs.h btrfs: remove duplicate included header from fs.h 2024-05-07 21:31:10 +02:00
inode-item.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
inode-item.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
inode.c btrfs: add a cached state to extent_clear_unlock_delalloc 2024-05-07 21:31:10 +02:00
ioctl.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
ioctl.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
Kconfig btrfs: check-integrity: remove CONFIG_BTRFS_FS_CHECK_INTEGRITY option 2023-10-12 16:44:05 +02:00
locking.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
locking.h btrfs: locking: rename __btrfs_tree_lock() and __btrfs_tree_read_lock() 2024-05-07 21:31:00 +02:00
lru_cache.c btrfs: fix typos found by codespell 2023-12-15 23:00:04 +01:00
lru_cache.h btrfs: open code trivial btrfs_lru_cache_size() 2024-03-04 16:24:53 +01:00
lzo.c btrfs: compression: migrate compression/decompression paths to folios 2024-05-07 21:31:02 +02:00
Makefile btrfs: add support for inserting raid stripe extents 2023-10-12 16:44:09 +02:00
messages.c btrfs: remove colon from messages with state 2024-04-18 01:46:35 +02:00
messages.h btrfs: constify fs_info parameter in __btrfs_panic() 2023-12-15 20:27:02 +01:00
misc.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
ordered-data.c btrfs: ensure fast fsync waits for ordered extents after a write failure 2024-05-28 16:35:12 +02:00
ordered-data.h btrfs: handle errors in btrfs_reloc_clone_csums properly 2024-05-07 21:31:09 +02:00
orphan.c btrfs: remove unused included headers 2024-03-04 16:24:46 +01:00
orphan.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
print-tree.c btrfs: new inline ref storing owning subvol of data extents 2023-10-12 16:44:11 +02:00
print-tree.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
props.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
props.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
qgroup.c btrfs: qgroup: fix qgroup id collision across mounts 2024-05-15 17:57:09 +02:00
qgroup.h btrfs: qgroup: validate btrfs_qgroup_inherit parameter 2024-03-05 17:13:24 +01:00
raid-stripe-tree.c btrfs: remove unused included headers 2024-03-04 16:24:46 +01:00
raid-stripe-tree.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
raid56.c btrfs: raid56: extra debugging for raid6 syndrome generation 2024-03-04 16:24:52 +01:00
raid56.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
rcu-string.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
ref-verify.c btrfs: rename btrfs_data_ref->ino to ->objectid 2024-05-07 21:31:05 +02:00
ref-verify.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
reflink.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
reflink.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
relocation.c btrfs: handle errors in btrfs_reloc_clone_csums properly 2024-05-07 21:31:09 +02:00
relocation.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
root-tree.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
root-tree.h btrfs: qgroup: fix qgroup prealloc rsv leak in subvolume operations 2024-04-02 19:18:23 +02:00
scrub.c btrfs: scrub: initialize ret in scrub_simple_mirror() to fix compilation warning 2024-05-15 17:57:32 +02:00
scrub.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
send.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
send.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
space-info.c btrfs: remove unused included headers 2024-03-04 16:24:46 +01:00
space-info.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
subpage.c btrfs: subpage: make writer lock utilize bitmap 2024-03-05 17:13:23 +01:00
subpage.h btrfs: subpage: make reader lock utilize bitmap 2024-03-05 17:13:23 +01:00
super.c btrfs: re-introduce 'norecovery' mount option 2024-05-21 15:27:17 +02:00
super.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
sysfs.c btrfs: use btrfs_is_testing() everywhere 2024-05-07 21:31:07 +02:00
sysfs.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
transaction.c btrfs: rename werr and err to ret in __btrfs_wait_marked_extents() 2024-05-07 21:31:08 +02:00
transaction.h btrfs: remove no longer used btrfs_transaction_in_commit() 2024-03-04 16:24:52 +01:00
tree-checker.c btrfs: use btrfs_is_testing() everywhere 2024-05-07 21:31:07 +02:00
tree-checker.h btrfs: make sure that WRITTEN is set on all metadata blocks 2024-05-02 22:11:13 +02:00
tree-log.c btrfs: fix crash on racing fsync and size-extending write into prealloc 2024-06-05 18:06:30 +02:00
tree-log.h btrfs: uninline some static inline helpers from tree-log.h 2024-03-04 16:24:53 +01:00
tree-mod-log.c btrfs: change root->root_key.objectid to btrfs_root_id() 2024-05-07 21:31:06 +02:00
tree-mod-log.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
ulist.c btrfs: remove unused included headers 2024-03-04 16:24:46 +01:00
ulist.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
uuid-tree.c btrfs: unify handling of return values of btrfs_insert_empty_items() 2024-03-04 16:24:48 +01:00
uuid-tree.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
verity.c btrfs: remove unused included headers 2024-03-04 16:24:46 +01:00
verity.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
volumes.c btrfs: remove no longer used btrfs_clone_chunk_map() 2024-05-07 21:31:03 +02:00
volumes.h btrfs: count super block write errors in device instead of tracking folio error state 2024-05-07 21:31:11 +02:00
xattr.c btrfs: rename err to ret in btrfs_initxattrs() 2024-05-07 21:31:00 +02:00
xattr.h btrfs: add forward declarations and headers, part 1 2024-03-04 16:24:49 +01:00
zlib.c btrfs: compression: migrate compression/decompression paths to folios 2024-05-07 21:31:02 +02:00
zoned.c btrfs: zoned: fix use-after-free due to race with dev replace 2024-05-15 17:57:25 +02:00
zoned.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
zstd.c btrfs: compression: migrate compression/decompression paths to folios 2024-05-07 21:31:02 +02:00