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linux/fs/btrfs
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Josef Bacik 4d7240f0ab btrfs: load the free space cache inode extents from commit root 
Historically we've allowed recursive locking specifically for the free
space inode.  This is because we are only doing reads and know that it's
safe.  However we don't actually need this feature, we can get away with
reading the commit root for the extents.  In fact if we want to allow
asynchronous loading of the free space cache we have to use the commit
root, otherwise we will deadlock.

Switch to using the commit root for the file extents.  These are only
read at load time, and are replaced as soon as we start writing the
cache out to disk.  The cache is never read again, so this is
legitimate.  This matches what we do for the inode itself, as we read
that from the commit root as well.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-12-08 15:54:03 +01:00
..
tests btrfs: load free space cache into a temporary ctl 2020-12-08 15:54:03 +01:00
acl.c
async-thread.c Btrfs: fix crash during unmount due to race with delayed inode workers 2020-03-23 17:01:51 +01:00
async-thread.h Btrfs: fix crash during unmount due to race with delayed inode workers 2020-03-23 17:01:51 +01:00
backref.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
backref.h btrfs: rename BTRFS_ROOT_REF_COWS to BTRFS_ROOT_SHAREABLE 2020-05-25 11:25:35 +02:00
block-group.c btrfs: load free space cache into a temporary ctl 2020-12-08 15:54:03 +01:00
block-group.h btrfs: convert block group refcount to refcount_t 2020-07-27 12:55:42 +02:00
block-rsv.c btrfs: introduce mount option rescue=ignorebadroots 2020-12-08 15:53:41 +01:00
block-rsv.h btrfs: Remove __ prefix from btrfs_block_rsv_release 2020-03-23 17:01:55 +01:00
btrfs_inode.h btrfs: switch cached fs_info::csum_size from u16 to u32 2020-12-08 15:53:59 +01:00
check-integrity.c btrfs: check integrity: remove local copy of csum_size 2020-12-08 15:54:01 +01:00
check-integrity.h btrfs: remove btrfsic_submit_bh() 2020-03-23 17:01:39 +01:00
compression.c btrfs: remove unnecessary local variables for checksum size 2020-12-08 15:54:00 +01:00
compression.h btrfs: compression: move declarations to header 2020-10-07 12:06:55 +02:00
ctree.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
ctree.h btrfs: update last_byte_to_unpin in switch_commit_roots 2020-12-08 15:54:02 +01:00
delalloc-space.c btrfs: add btrfs_reserve_data_bytes and use it 2020-10-07 12:06:52 +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: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
delayed-inode.h btrfs: delayed-inode: Replace zero-length array with flexible-array member 2020-03-23 17:01:53 +01:00
delayed-ref.c btrfs: Remove __ prefix from btrfs_block_rsv_release 2020-03-23 17:01:55 +01:00
delayed-ref.h
dev-replace.c btrfs: dev-replace: fail mount if we don't have replace item with target device 2020-11-05 13:03:31 +01:00
dev-replace.h
dir-item.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
discard.c btrfs: cleanup btrfs_discard_update_discardable usage 2020-12-08 15:54:02 +01:00
discard.h btrfs: cleanup btrfs_discard_update_discardable usage 2020-12-08 15:54:02 +01:00
disk-io.c btrfs: locking: remove all the blocking helpers 2020-12-08 15:54:01 +01:00
disk-io.h btrfs: replace fs_info and private_data with inode in btrfs_wq_submit_bio 2020-12-08 15:53:54 +01:00
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-tree.h btrfs: sink the failed_start parameter to set_extent_bit 2020-12-08 15:53:54 +01:00
extent-tree.c btrfs: explicitly protect ->last_byte_to_unpin in unpin_extent_range 2020-12-08 15:54:02 +01:00
extent_io.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
extent_io.h btrfs: reorder extent buffer members for better packing 2020-12-08 15:54:02 +01:00
extent_map.c Btrfs: fix race between using extent maps and merging them 2020-02-12 17:16:46 +01:00
extent_map.h btrfs: remove extent_map::bdev 2019-11-18 23:43:44 +01:00
file-item.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
file.c btrfs: locking: remove all the blocking helpers 2020-12-08 15:54:01 +01:00
free-space-cache.c btrfs: load free space cache into a temporary ctl 2020-12-08 15:54:03 +01:00
free-space-cache.h btrfs: load free space cache into a temporary ctl 2020-12-08 15:54:03 +01:00
free-space-tree.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
free-space-tree.h btrfs: rename btrfs_block_group_cache 2019-11-18 17:51:51 +01:00
inode-item.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
inode-map.c btrfs: make btrfs_delalloc_reserve_space take btrfs_inode 2020-07-27 12:55:36 +02:00
inode-map.h
inode.c btrfs: load the free space cache inode extents from commit root 2020-12-08 15:54:03 +01:00
ioctl.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
Kconfig btrfs: switch to iomap for direct IO 2020-10-07 12:06:57 +02:00
locking.c btrfs: locking: remove all the blocking helpers 2020-12-08 15:54:01 +01:00
locking.h btrfs: locking: remove all the blocking helpers 2020-12-08 15:54:01 +01:00
lzo.c
Makefile Btrfs: move all reflink implementation code into its own file 2020-03-23 17:01:54 +01:00
misc.h btrfs: rename tree_entry to rb_simple_node and export it 2020-05-25 11:25:19 +02:00
ordered-data.c btrfs: switch cached fs_info::csum_size from u16 to u32 2020-12-08 15:53:59 +01:00
ordered-data.h btrfs: remove unnecessary local variables for checksum size 2020-12-08 15:54:00 +01:00
orphan.c
print-tree.c btrfs: remove unnecessary casts in printk 2020-12-08 15:53:52 +01:00
print-tree.h btrfs: pretty print leaked root name 2020-10-07 12:12:20 +02:00
props.c btrfs: simplify iget helpers 2020-05-25 11:25:37 +02:00
props.h
qgroup.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
qgroup.h btrfs: qgroup: export qgroups in sysfs 2020-07-27 12:55:37 +02:00
raid56.c btrfs: raid56: remove out label in __raid56_parity_recover 2020-07-27 12:55:44 +02:00
raid56.h
rcu-string.h btrfs: rcu-string: Replace zero-length array with flexible-array member 2020-03-23 17:01:53 +01:00
reada.c btrfs: assert we are holding the reada_lock when releasing a readahead zone 2020-12-08 15:53:38 +01:00
ref-verify.c btrfs: locking: remove all the blocking helpers 2020-12-08 15:54:01 +01:00
ref-verify.h
reflink.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
reflink.h Btrfs: move all reflink implementation code into its own file 2020-03-23 17:01:54 +01:00
relocation.c btrfs: locking: remove all the blocking helpers 2020-12-08 15:54:01 +01:00
root-tree.c btrfs: qgroup: fix qgroup meta rsv leak for subvolume operations 2020-10-07 12:12:13 +02:00
scrub.c btrfs: scrub: remove local copy of csum_size from context 2020-12-08 15:54:01 +01:00
send.c btrfs: send: use helpers to access root_item::ctransid 2020-12-08 15:53:51 +01:00
send.h btrfs: send: avoid copying file data 2020-10-07 12:13:17 +02:00
space-info.c btrfs: kill the RCU protection for fs_info->space_info 2020-10-07 12:13:19 +02:00
space-info.h btrfs: add btrfs_reserve_data_bytes and use it 2020-10-07 12:06:52 +02:00
struct-funcs.c btrfs: use unaligned helpers for stack and header set/get helpers 2020-10-07 12:13:23 +02:00
super.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
sysfs.c btrfs: sysfs: add per-fs attribute for read policy 2020-12-08 15:53:45 +01:00
sysfs.h btrfs: split and refactor btrfs_sysfs_remove_devices_dir 2020-10-07 12:12:21 +02:00
transaction.c btrfs: update last_byte_to_unpin in switch_commit_roots 2020-12-08 15:54:02 +01:00
transaction.h btrfs: remove dio iomap DSYNC workaround 2020-12-08 15:53:49 +01:00
tree-checker.c btrfs: switch cached fs_info::csum_size from u16 to u32 2020-12-08 15:53:59 +01:00
tree-checker.h
tree-defrag.c btrfs: locking: remove all the blocking helpers 2020-12-08 15:54:01 +01:00
tree-log.c btrfs: locking: remove all the blocking helpers 2020-12-08 15:54:01 +01:00
tree-log.h btrfs: make fast fsyncs wait only for writeback 2020-10-07 12:06:56 +02:00
ulist.c
ulist.h
uuid-tree.c btrfs: remove unnecessary casts in printk 2020-12-08 15:53:52 +01:00
volumes.c btrfs: create read policy framework 2020-12-08 15:53:44 +01:00
volumes.h btrfs: create read policy framework 2020-12-08 15:53:44 +01:00
xattr.c
xattr.h
zlib.c btrfs: use larger zlib buffer for s390 hardware compression 2020-01-31 10:30:40 -08:00
zstd.c