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17b3612022
linux/fs/btrfs
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Josef Bacik 17b3612022 btrfs: add parse_param callback for the new mount API 
The parse_param callback handles one parameter at a time, take our
existing mount option parsing loop and adjust it to handle one parameter
at a time, and tie it into the fs_context_operations.

Create a btrfs_fs_context object that will store the various mount
properties, we'll house this in fc->fs_private.  This is necessary to
separate because remounting will use ->reconfigure, and we'll get a new
copy of the parsed parameters, so we can no longer directly mess with
the fs_info in this stage.

In the future we'll add this to the btrfs_fs_info and update the users
to use the new context object instead.

There's a change how the option device= is processed. Previously all
mount options were parsed in one go under uuid_mutex and the devices
opened. This prevented a concurrent scan to happen during mount. Now we
could see a device scan happen (e.g. by udev) but this should not affect
the end result, mount will either see the populated fs_devices or will
scan the device by itself.

Alternatively we could save all the device paths first and then process
them in one go as before but this does not seem to be necessary.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ add note about device scanning ]
Signed-off-by: David Sterba <dsterba@suse.com>
2023-12-15 20:27:04 +01:00
..
tests btrfs: always set extent_io_tree::inode and drop fs_info 2023-12-15 20:27:02 +01:00
accessors.c
accessors.h btrfs: qgroup: check generation when recording simple quota delta 2023-10-12 16:44:11 +02:00
acl.c
acl.h
async-thread.c btrfs: merge ordered work callbacks in btrfs_work into one 2023-10-12 16:44:10 +02:00
async-thread.h btrfs: merge ordered work callbacks in btrfs_work into one 2023-10-12 16:44:10 +02:00
backref.c for-6.7-tag 2023-10-30 10:42:06 -10:00
backref.h for-6.7-tag 2023-10-30 10:42:06 -10:00
bio.c btrfs: merge ordered work callbacks in btrfs_work into one 2023-10-12 16:44:10 +02:00
bio.h btrfs: add an ordered_extent pointer to struct btrfs_bio 2023-06-19 13:59:36 +02:00
block-group.c btrfs: remove stripe size local variable from insert_dev_extents() 2023-12-15 20:27:02 +01:00
block-group.h btrfs: use a dedicated data structure for chunk maps 2023-12-15 20:27:02 +01:00
block-rsv.c btrfs: read raid stripe tree from disk 2023-10-12 16:44:09 +02:00
block-rsv.h btrfs: move btrfs_check_trunc_cache_free_space into block-rsv.c 2023-06-19 13:59:24 +02:00
btrfs_inode.h btrfs: open code timespec64 in struct btrfs_inode 2023-10-12 16:44:19 +02:00
compression.c btrfs: use shrinker for compression page pool 2023-12-15 20:27:01 +01:00
compression.h btrfs: use page alloc/free wrappers for compression pages 2023-12-15 20:27:01 +01:00
ctree.c btrfs: make the logic from btrfs_block_can_be_shared() easier to read 2023-12-15 20:27:00 +01:00
ctree.h btrfs: remove unused btrfs_root::type 2023-12-15 20:27:01 +01:00
defrag.c btrfs: remove no longer used EXTENT_MAP_DELALLOC block start value 2023-12-15 20:27:03 +01:00
defrag.h btrfs: move btrfs_defrag_root() to defrag.{c,h} 2023-10-12 16:44:13 +02:00
delalloc-space.c btrfs: fix qgroup_free_reserved_data int overflow 2023-12-06 22:32:46 +01:00
delalloc-space.h
delayed-inode.c btrfs: do not utilize goto to implement delayed inode ref deletion 2023-12-15 20:27:00 +01:00
delayed-inode.h btrfs: remove redundant root argument from btrfs_delayed_update_inode() 2023-10-12 16:44:12 +02:00
delayed-ref.c btrfs: fix qgroup record leaks when using simple quotas 2023-11-09 14:01:59 +01:00
delayed-ref.h btrfs: stop reserving excessive space for block group item insertions 2023-10-12 16:44:16 +02:00
dev-replace.c btrfs: use a dedicated data structure for chunk maps 2023-12-15 20:27:02 +01:00
dev-replace.h
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 fscrypt related dependencies to respective headers 2023-10-12 16:44:02 +02:00
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: add a NOSPACECACHE mount option flag 2023-12-15 20:27:04 +01:00
disk-io.h btrfs: remove duplicate btrfs_clear_buffer_dirty() prototype from disk-io.h 2023-12-15 20:27:00 +01:00
export.c
export.h
extent_io.c btrfs: allow extent buffer helpers to skip cross-page handling 2023-12-15 20:27:03 +01:00
extent_io.h btrfs: allow extent buffer helpers to skip cross-page handling 2023-12-15 20:27:03 +01:00
extent_map.c btrfs: remove no longer used EXTENT_MAP_DELALLOC block start value 2023-12-15 20:27:03 +01:00
extent_map.h btrfs: remove no longer used EXTENT_MAP_DELALLOC block start value 2023-12-15 20:27:03 +01:00
extent-io-tree.c btrfs: always set extent_io_tree::inode and drop fs_info 2023-12-15 20:27:02 +01:00
extent-io-tree.h btrfs: always set extent_io_tree::inode and drop fs_info 2023-12-15 20:27:02 +01:00
extent-tree.c btrfs: reflow btrfs_free_tree_block 2023-12-15 20:27:03 +01:00
extent-tree.h btrfs: get correct owning_root when dropping snapshot 2023-11-03 16:39:06 +01:00
file-item.c btrfs: abort transaction on generation mismatch when marking eb as dirty 2023-10-12 16:44:07 +02:00
file-item.h btrfs: scrub: avoid unnecessary csum tree search preparing stripes 2023-08-21 14:54:48 +02:00
file.c btrfs: migrate to use folio private instead of page private 2023-12-15 20:27:01 +01:00
file.h
free-space-cache.c btrfs: remove redundant root argument from btrfs_update_inode() 2023-10-12 16:44:12 +02:00
free-space-cache.h btrfs: move btrfs_check_trunc_cache_free_space into block-rsv.c 2023-06-19 13:59:24 +02:00
free-space-tree.c btrfs: abort transaction on generation mismatch when marking eb as dirty 2023-10-12 16:44:07 +02:00
free-space-tree.h btrfs: make clear_cache mount option to rebuild FST without disabling it 2023-05-10 14:51:27 +02:00
fs.c
fs.h btrfs: add a NOSPACECACHE mount option flag 2023-12-15 20:27:04 +01:00
inode-item.c btrfs: track owning root in btrfs_ref 2023-10-12 16:44:11 +02:00
inode-item.h btrfs: add fscrypt related dependencies to respective headers 2023-10-12 16:44:02 +02:00
inode.c btrfs: always set extent_io_tree::inode and drop fs_info 2023-12-15 20:27:02 +01:00
ioctl.c for-6.7-rc3-tag 2023-11-28 11:16:04 -08:00
ioctl.h
Kconfig btrfs: check-integrity: remove CONFIG_BTRFS_FS_CHECK_INTEGRITY option 2023-10-12 16:44:05 +02:00
locking.c btrfs: add raid stripe tree definitions 2023-10-12 16:44:09 +02:00
locking.h btrfs: do not block starts waiting on previous transaction commit 2023-09-08 14:10:49 +02:00
lru_cache.c
lru_cache.h
lzo.c btrfs: use page alloc/free wrappers for compression pages 2023-12-15 20:27:01 +01:00
Makefile btrfs: add support for inserting raid stripe extents 2023-10-12 16:44:09 +02:00
messages.c btrfs: constify fs_info parameter in __btrfs_panic() 2023-12-15 20:27:02 +01:00
messages.h btrfs: constify fs_info parameter in __btrfs_panic() 2023-12-15 20:27:02 +01:00
misc.h minmax: add in_range() macro 2023-08-24 16:20:18 -07:00
ordered-data.c btrfs: fix qgroup_free_reserved_data int overflow 2023-12-06 22:32:46 +01:00
ordered-data.h btrfs: remove unused btrfs_ordered_extent::outstanding_isize 2023-12-15 20:27:01 +01:00
orphan.c
orphan.h
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: print-tree: pass const extent buffer pointer 2023-06-19 13:59:22 +02:00
props.c btrfs: move btrfs_name_hash to dir-item.h 2023-10-12 16:44:02 +02:00
props.h
qgroup.c btrfs: ensure releasing squota reserve on head refs 2023-12-06 22:32:57 +01:00
qgroup.h btrfs: ensure releasing squota reserve on head refs 2023-12-06 22:32:57 +01:00
raid56.c btrfs: raid56: remove unused btrfs_plug_cb::work 2023-12-15 20:27:01 +01:00
raid56.h btrfs: use a dedicated data structure for chunk maps 2023-12-15 20:27:02 +01:00
raid-stripe-tree.c btrfs: directly return 0 on no error code in btrfs_insert_raid_extent() 2023-11-03 16:38:51 +01:00
raid-stripe-tree.h btrfs: zoned: support RAID0/1/10 on top of raid stripe tree 2023-10-12 16:44:09 +02:00
rcu-string.h
ref-verify.c btrfs: ref-verify: fix memory leaks in btrfs_ref_tree_mod() 2023-11-23 22:27:34 +01:00
ref-verify.h
reflink.c for-6.7-tag 2023-10-30 10:42:06 -10:00
reflink.h
relocation.c for-6.7-tag 2023-10-30 10:42:06 -10:00
relocation.h btrfs: relocation: constify parameters where possible 2023-10-12 16:44:13 +02:00
root-tree.c btrfs: qgroup: add new quota mode for simple quotas 2023-10-12 16:44:10 +02:00
root-tree.h btrfs: drop __must_check annotations 2023-10-12 16:44:04 +02:00
scrub.c btrfs: use a dedicated data structure for chunk maps 2023-12-15 20:27:02 +01:00
scrub.h
send.c btrfs: send: ensure send_fd is writable 2023-11-24 18:50:53 +01:00
send.h
space-info.c btrfs: adjust overcommit logic when very close to full 2023-10-12 16:44:16 +02:00
space-info.h btrfs: pass a space_info argument to btrfs_reserve_metadata_bytes() 2023-10-12 16:44:05 +02:00
subpage.c btrfs: migrate to use folio private instead of page private 2023-12-15 20:27:01 +01:00
subpage.h btrfs: stop setting PageError in the data I/O path 2023-06-19 13:59:35 +02:00
super.c btrfs: add parse_param callback for the new mount API 2023-12-15 20:27:04 +01:00
super.h btrfs: move space cache settings into open_ctree 2023-12-15 20:27:03 +01:00
sysfs.c btrfs: sysfs: show temp_fsid feature 2023-10-12 16:44:18 +02:00
sysfs.h
transaction.c for-6.7-rc5-tag 2023-12-14 11:53:00 -08:00
transaction.h btrfs: free qgroup pertrans reserve on transaction abort 2023-12-06 22:32:49 +01:00
tree-checker.c btrfs: tree-checker: add type and sequence check for inline backrefs 2023-11-15 17:08:09 +01:00
tree-checker.h btrfs: move btrfs_verify_level_key into tree-checker.c 2023-06-19 13:59:25 +02:00
tree-log.c btrfs: remove now unneeded btrfs_redirty_list_add 2023-12-15 20:27:03 +01:00
tree-log.h btrfs: change for_rename argument of btrfs_record_unlink_dir() to bool 2023-06-19 13:59:26 +02:00
tree-mod-log.c btrfs: avoid tree mod log ENOMEM failures when we don't need to log 2023-06-19 13:59:38 +02:00
tree-mod-log.h
ulist.c btrfs: reformat remaining kdoc style comments 2023-10-12 16:44:04 +02:00
ulist.h
uuid-tree.c btrfs: abort transaction on generation mismatch when marking eb as dirty 2023-10-12 16:44:07 +02:00
uuid-tree.h
verity.c btrfs: remove redundant root argument from btrfs_update_inode() 2023-10-12 16:44:12 +02:00
verity.h
volumes.c btrfs: use a dedicated data structure for chunk maps 2023-12-15 20:27:02 +01:00
volumes.h btrfs: use a dedicated data structure for chunk maps 2023-12-15 20:27:02 +01:00
xattr.c for-6.7-tag 2023-10-30 10:42:06 -10:00
xattr.h btrfs: move btrfs_xattr_handlers to .rodata 2023-10-09 16:24:17 +02:00
zlib.c btrfs: use page alloc/free wrappers for compression pages 2023-12-15 20:27:01 +01:00
zoned.c btrfs: remove now unneeded btrfs_redirty_list_add 2023-12-15 20:27:03 +01:00
zoned.h btrfs: remove now unneeded btrfs_redirty_list_add 2023-12-15 20:27:03 +01:00
zstd.c btrfs: use page alloc/free wrappers for compression pages 2023-12-15 20:27:01 +01:00