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linux-stable/fs/btrfs
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Filipe Manana 4484940514 btrfs: avoid races when tracking progress for extent map shrinking 
We store the progress (root and inode numbers) of the extent map shrinker
in fs_info without any synchronization but we can have multiple tasks
calling into the shrinker during memory allocations when there's enough
memory pressure for example.

This can result in a task A reading fs_info->extent_map_shrinker_last_ino
after another task B updates it, and task A reading
fs_info->extent_map_shrinker_last_root before task B updates it, making
task A see an odd state that isn't necessarily harmful but may make it
skip certain inode ranges or do more work than necessary by going over
the same inodes again. These unprotected accesses would also trigger
warnings from tools like KCSAN.

So add a lock to protect access to these progress fields.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2024-07-11 16:50:54 +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: zoned: allocate dummy checksums for zoned NODATASUM writes 2024-06-13 20:43:55 +02:00
bio.h btrfs: add forward declarations and headers, part 2 2024-03-04 16:24:49 +01:00
block-group.c btrfs: fix adding block group to a reclaim list and the unused list during reclaim 2024-07-01 17:33:15 +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: avoid races when tracking progress for extent map shrinking 2024-07-11 16:50:54 +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: fix folio refcount in __alloc_dummy_extent_buffer() 2024-07-04 02:19:10 +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: avoid races when tracking progress for extent map shrinking 2024-07-11 16:50:54 +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: zoned: fix initial free space detection 2024-06-25 00:33:57 +02:00
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: avoid races when tracking progress for extent map shrinking 2024-07-11 16:50:54 +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: fix folio refcount in btrfs_do_encoded_write() 2024-07-04 02:18:45 +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: always do the basic checks for btrfs_qgroup_inherit structure 2024-07-02 19:14:36 +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: fix uninitialized return value in the ref-verify tool 2024-07-02 19:14:57 +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: handle RST lookup error correctly 2024-06-25 00:34:16 +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: zoned: fix calc_available_free_space() for zoned mode 2024-07-02 19:13:11 +02:00
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: use NOFS context when getting inodes during logging and log replay 2024-06-25 00:33:47 +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