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linux-stable/fs/btrfs
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Filipe Manana 6e8e777deb btrfs: eliminate some false positives when checking if inode was logged 
When checking if an inode was previously logged in the current transaction
through the helper inode_logged(), we can return some false positives that
can be easily eliminated. These correspond to the cases where an inode has
a ->logged_trans value that is not zero and its value is smaller then the
ID of the current transaction. This means we know exactly that the inode
was never logged before in the current transaction, so we can return false
and avoid the callers to do extra work:

1) Having btrfs_del_dir_entries_in_log() and btrfs_del_inode_ref_in_log()
   unnecessarily join a log transaction and do deletion searches in a log
   tree that will not find anything. This just adds unnecessary contention
   on extent buffer locks;

2) Having btrfs_log_new_name() unnecessarily log an inode when it is not
   needed. If the inode was not logged before, we don't need to log it in
   LOG_INODE_EXISTS mode.

So just make sure that any false positive only happens when ->logged_trans
has a value of 0.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2021-08-23 13:19:08 +02:00
..
tests btrfs: remove ignore_offset argument from btrfs_find_all_roots() 2021-08-23 13:19:01 +02:00
acl.c fs: make helpers idmap mount aware 2021-01-24 14:27:20 +01:00
async-thread.c
async-thread.h
backref.c btrfs: remove ignore_offset argument from btrfs_find_all_roots() 2021-08-23 13:19:01 +02:00
backref.h btrfs: remove ignore_offset argument from btrfs_find_all_roots() 2021-08-23 13:19:01 +02:00
block-group.c btrfs: rescue: allow ibadroots to skip bad extent tree when reading block group items 2021-08-23 13:19:00 +02:00
block-group.h btrfs: rework chunk allocation to avoid exhaustion of the system chunk array 2021-07-07 17:42:41 +02:00
block-rsv.c
block-rsv.h
btrfs_inode.h btrfs: remove stale comment and logic from btrfs_inode_in_log() 2021-04-19 17:25:16 +02:00
check-integrity.c btrfs: check-integrity: drop kmap/kunmap for block pages 2021-08-23 13:19:00 +02:00
check-integrity.h
compression.c btrfs: rework btrfs_decompress_buf2page() 2021-08-23 13:19:04 +02:00
compression.h btrfs: rework btrfs_decompress_buf2page() 2021-08-23 13:19:04 +02:00
ctree.c btrfs: make btrfs_next_leaf static inline 2021-08-23 13:19:02 +02:00
ctree.h btrfs: use delalloc_bytes to determine flush amount for shrink_delalloc 2021-08-23 13:19:07 +02:00
delalloc-space.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
delalloc-space.h
delayed-inode.c btrfs: stop doing GFP_KERNEL memory allocations in the ref verify tool 2021-08-23 13:19:00 +02:00
delayed-inode.h
delayed-ref.c btrfs: fix lock inversion problem when doing qgroup extent tracing 2021-07-22 15:50:07 +02:00
delayed-ref.h btrfs: only let one thread pre-flush delayed refs in commit 2021-02-08 22:58:56 +01:00
dev-replace.c btrfs: fix typos in comments 2021-06-22 14:11:57 +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: introduce btrfs_lookup_match_dir 2021-08-23 13:19:02 +02:00
discard.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
discard.h
disk-io.c btrfs: allow read-write for 4K sectorsize on 64K page size systems 2021-08-23 13:19:06 +02:00
disk-io.h btrfs: split alloc_log_tree() 2021-02-09 02:46:07 +01:00
export.c
export.h
extent-io-tree.h
extent-tree.c btrfs: pass NULL as trans to btrfs_search_slot if we only want to search 2021-08-23 13:19:00 +02:00
extent_io.c btrfs: fix argument type of btrfs_bio_clone_partial() 2021-08-23 13:19:08 +02:00
extent_io.h btrfs: fix argument type of btrfs_bio_clone_partial() 2021-08-23 13:19:08 +02:00
extent_map.c btrfs: fix parameter description of btrfs_add_extent_mapping 2021-02-08 22:58:53 +01:00
extent_map.h
file-item.c btrfs: remove unneeded return variable in btrfs_lookup_file_extent 2021-08-23 13:19:01 +02:00
file.c btrfs: subpage: fix a potential use-after-free in writeback helper 2021-08-23 13:19:05 +02:00
free-space-cache.c btrfs: don't set the full sync flag when truncation does not touch extents 2021-06-21 15:19:05 +02:00
free-space-cache.h btrfs: zoned: track unusable bytes for zones 2021-02-09 02:46:03 +01:00
free-space-tree.c btrfs: fix possible free space tree corruption with online conversion 2021-01-25 18:44:37 +01:00
free-space-tree.h
inode-item.c
inode.c btrfs: drop unnecessary ASSERT from btrfs_submit_direct() 2021-08-23 13:19:08 +02:00
ioctl.c btrfs: allow read-write for 4K sectorsize on 64K page size systems 2021-08-23 13:19:06 +02:00
Kconfig btrfs: disable build on platforms having page size 256K 2021-06-22 14:11:57 +02:00
locking.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
locking.h
lzo.c btrfs: rework lzo_decompress_bio() to make it subpage compatible 2021-08-23 13:19:04 +02:00
Makefile btrfs: move the tree mod log code into its own file 2021-04-19 17:25:16 +02:00
misc.h
ordered-data.c btrfs: remove uptodate parameter from btrfs_dec_test_first_ordered_pending 2021-08-23 13:19:02 +02:00
ordered-data.h btrfs: remove uptodate parameter from btrfs_dec_test_first_ordered_pending 2021-08-23 13:19:02 +02:00
orphan.c
print-tree.c btrfs: print the actual offset in btrfs_root_name 2021-01-07 17:25:05 +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: props: change how empty value is interpreted 2021-06-22 14:11:58 +02:00
props.h
qgroup.c btrfs: remove ignore_offset argument from btrfs_find_all_roots() 2021-08-23 13:19:01 +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: constify and cleanup variables in comparators 2021-08-23 13:19:03 +02:00
raid56.h
rcu-string.h
reada.c btrfs: subpage: make readahead work properly 2021-03-16 11:06:21 +01:00
ref-verify.c btrfs: stop doing GFP_KERNEL memory allocations in the ref verify tool 2021-08-23 13:19:00 +02:00
ref-verify.h
reflink.c btrfs: reflink: make copy_inline_to_page() to be subpage compatible 2021-06-21 15:19:10 +02:00
reflink.h
relocation.c btrfs: subpage: fix relocation potentially overwriting last page data 2021-08-23 13:19:06 +02:00
root-tree.c
scrub.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
send.c btrfs: constify and cleanup variables in comparators 2021-08-23 13:19:03 +02:00
send.h
space-info.c btrfs: wait on async extents when flushing delalloc 2021-08-23 13:19:07 +02:00
space-info.h btrfs: rip out btrfs_space_info::total_bytes_pinned 2021-06-22 14:55:25 +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: subpage: fix a potential use-after-free in writeback helper 2021-08-23 13:19:05 +02:00
subpage.h btrfs: subpage: fix writeback which does not have ordered extent 2021-08-23 13:19:04 +02:00
super.c btrfs: allow read-write for 4K sectorsize on 64K page size systems 2021-08-23 13:19:06 +02:00
sysfs.c btrfs: allow read-write for 4K sectorsize on 64K page size systems 2021-08-23 13:19:06 +02:00
sysfs.h
transaction.c btrfs: rework chunk allocation to avoid exhaustion of the system chunk array 2021-07-07 17:42:41 +02:00
transaction.h btrfs: rework chunk allocation to avoid exhaustion of the system chunk array 2021-07-07 17:42:41 +02:00
tree-checker.c btrfs: tree-checker: add missing stripe checks for raid1c3/4 profiles 2021-08-23 13:19:03 +02:00
tree-checker.h
tree-defrag.c
tree-log.c btrfs: eliminate some false positives when checking if inode was logged 2021-08-23 13:19:08 +02:00
tree-log.h
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
volumes.c btrfs: subpage: reject raid56 filesystem and profile conversion 2021-08-23 13:19:05 +02:00
volumes.h btrfs: uninline btrfs_bg_flags_to_raid_index 2021-08-23 13:19:03 +02:00
xattr.c for-5.12-rc1-tag 2021-03-05 12:21:14 -08:00
xattr.h
zlib.c btrfs: rework btrfs_decompress_buf2page() 2021-08-23 13:19:04 +02:00
zoned.c btrfs: use btrfs_next_leaf instead of btrfs_next_item when slots > nritems 2021-08-23 13:19:01 +02:00
zoned.h btrfs: zoned: remove max_zone_append_size logic 2021-08-23 13:18:58 +02:00
zstd.c btrfs: rework btrfs_decompress_buf2page() 2021-08-23 13:19:04 +02:00