Johannes Thumshirn 8f32380d3f btrfs: use the page cache for super block reading ... Super-block reading in BTRFS is done using buffer_heads. Buffer_heads have some drawbacks, like not being able to propagate errors from the lower layers. Directly use the page cache for reading the super blocks from disk or invalidating an on-disk super block. We have to use the page cache so to avoid races between mkfs and udev. See also 6f60cbd3ae ("btrfs: access superblock via pagecache in scan_one_device"). This patch unwraps the buffer head API and does not change the way the super block is actually read. Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>		2020-03-23 17:01:39 +01:00
..
tests	btrfs: rename btrfs_put_fs_root and btrfs_grab_fs_root	2020-03-23 17:01:33 +01:00
acl.c	btrfs: cleanup btrfs_setxattr_trans and drop transaction parameter	2019-04-29 19:02:44 +02:00
async-thread.c	btrfs: add __pure attribute to functions	2019-11-18 12:46:52 +01:00
async-thread.h	btrfs: add __pure attribute to functions	2019-11-18 12:46:52 +01:00
backref.c	btrfs: rename btrfs_put_fs_root and btrfs_grab_fs_root	2020-03-23 17:01:33 +01:00
backref.h	btrfs: fiemap: preallocate ulists for btrfs_check_shared	2019-07-01 13:34:53 +02:00
block-group.c	btrfs: switch to per-transaction pinned extents	2020-03-23 17:01:38 +01:00
block-group.h	btrfs: Move and unexport btrfs_rmap_block	2020-01-23 17:24:34 +01:00
block-rsv.c	btrfs: add a comment describing block reserves	2020-03-23 17:01:26 +01:00
block-rsv.h	btrfs: migrate the global_block_rsv helpers to block-rsv.c	2019-07-02 12:30:55 +02:00
btrfs_inode.h	btrfs: introduce per-inode file extent tree	2020-03-23 17:01:24 +01:00
check-integrity.c	btrfs: remove superfluous BUG_ON() in integrity checks	2020-01-20 16:40:52 +01:00
check-integrity.h
compression.c	btrfs: use larger zlib buffer for s390 hardware compression	2020-01-31 10:30:40 -08:00
compression.h	btrfs: compression: remove ops pointer from workspace_manager	2019-11-18 12:46:59 +01:00
ctree.c	btrfs: move root node locking helpers to locking.c	2020-03-23 17:01:33 +01:00
ctree.h	btrfs: switch to per-transaction pinned extents	2020-03-23 17:01:38 +01:00
delalloc-space.c	btrfs: add a comment describing delalloc space reservation	2020-03-23 17:01:27 +01:00
delalloc-space.h	btrfs: migrate the delalloc space stuff to it's own home	2019-07-04 17:26:17 +02:00
delayed-inode.c	btrfs: add wrapper for transaction abort predicate	2020-03-23 17:01:34 +01:00
delayed-inode.h	Btrfs: delayed-inode: use rb_first_cached for ins_root and del_root	2018-10-15 17:23:33 +02:00
delayed-ref.c	Btrfs: fix race between adding and putting tree mod seq elements and nodes	2020-01-31 14:01:20 +01:00
delayed-ref.h	btrfs: migrate the delayed refs rsv code	2019-07-04 17:26:17 +02:00
dev-replace.c	btrfs: sysfs, rename device_link add/remove functions	2020-03-23 17:01:35 +01:00
dev-replace.h	btrfs: add __pure attribute to functions	2019-11-18 12:46:52 +01:00
dir-item.c	btrfs: remove unused parameter fs_info from btrfs_extend_item	2019-04-29 19:02:50 +02:00
discard.c	btrfs: add correction to handle -1 edge case in async discard	2020-01-20 16:41:01 +01:00
discard.h	btrfs: have multiple discard lists	2020-01-20 16:41:00 +01:00
disk-io.c	btrfs: use the page cache for super block reading	2020-03-23 17:01:39 +01:00
disk-io.h	btrfs: use the page cache for super block reading	2020-03-23 17:01:39 +01:00
export.c	btrfs: rename btrfs_put_fs_root and btrfs_grab_fs_root	2020-03-23 17:01:33 +01:00
export.h
extent_io.c	Btrfs: avoid unnecessary splits when setting bits on an extent io tree	2020-03-23 17:01:38 +01:00
extent_io.h	btrfs: sink argument tree to extent_read_full_page	2020-03-23 17:01:35 +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
extent-io-tree.h	btrfs: switch to per-transaction pinned extents	2020-03-23 17:01:38 +01:00
extent-tree.c	btrfs: handle logged extent failure properly	2020-03-23 17:01:38 +01:00
file-item.c	btrfs: introduce per-inode file extent tree	2020-03-23 17:01:24 +01:00
file.c	btrfs: drop argument tree from btrfs_lock_and_flush_ordered_range	2020-03-23 17:01:34 +01:00
free-space-cache.c	btrfs: switch to per-transaction pinned extents	2020-03-23 17:01:38 +01:00
free-space-cache.h	btrfs: have multiple discard lists	2020-01-20 16:41:00 +01:00
free-space-tree.c	btrfs: rename btrfs_put_fs_root and btrfs_grab_fs_root	2020-03-23 17:01:33 +01:00
free-space-tree.h	btrfs: rename btrfs_block_group_cache	2019-11-18 17:51:51 +01:00
inode-item.c	btrfs: Make btrfs_find_name_in_ext_backref return struct btrfs_inode_extref	2019-09-09 14:59:16 +02:00
inode-map.c	btrfs: keep track of which extents have been discarded	2020-01-20 16:40:57 +01:00
inode-map.h
inode.c	btrfs: sink argument tree to extent_read_full_page	2020-03-23 17:01:35 +01:00
ioctl.c	btrfs: rename btrfs_put_fs_root and btrfs_grab_fs_root	2020-03-23 17:01:33 +01:00
Kconfig	btrfs: add Kconfig dependency for BLAKE2B	2019-12-09 17:56:06 +01:00
locking.c	btrfs: move root node locking helpers to locking.c	2020-03-23 17:01:33 +01:00
locking.h	btrfs: move btrfs_unlock_up_safe to other locking functions	2019-11-18 12:46:49 +01:00
lzo.c	btrfs: compression: inline free_workspace	2019-11-18 12:46:59 +01:00
Makefile	btrfs: add the beginning of async discard, discard workqueue	2020-01-20 16:40:57 +01:00
misc.h	btrfs: add 64bit safe helper for power of two checks	2019-11-18 12:46:50 +01:00
ordered-data.c	btrfs: drop argument tree from btrfs_lock_and_flush_ordered_range	2020-03-23 17:01:34 +01:00
ordered-data.h	btrfs: drop argument tree from btrfs_lock_and_flush_ordered_range	2020-03-23 17:01:34 +01:00
orphan.c
print-tree.c	btrfs: Remove unneeded semicolon	2020-01-20 16:40:55 +01:00
print-tree.h
props.c	btrfs: props: remove unnecessary hash_init()	2019-11-18 12:46:55 +01:00
props.h	btrfs: delete unused function btrfs_set_prop_trans	2019-04-29 19:02:54 +02:00
qgroup.c	btrfs: rename btrfs_put_fs_root and btrfs_grab_fs_root	2020-03-23 17:01:33 +01:00
qgroup.h	btrfs: destroy qgroup extent records on transaction abort	2020-02-19 00:35:54 +01:00
raid56.c	btrfs: remove pointless local variable in lock_stripe_add()	2019-11-18 12:47:00 +01:00
raid56.h	btrfs: constify map parameter for nr_parity_stripes and nr_data_stripes	2019-07-01 13:34:58 +02:00
rcu-string.h
reada.c	btrfs: rename btrfs_block_group_cache	2019-11-18 17:51:51 +01:00
ref-verify.c	btrfs: ref-verify: fix memory leaks	2020-02-12 17:16:31 +01:00
ref-verify.h	btrfs: ref-verify: Use btrfs_ref to refactor btrfs_ref_tree_mod()	2019-04-29 19:02:49 +02:00
relocation.c	btrfs: relocation: Remove is_cowonly_root()	2020-03-23 17:01:38 +01:00
root-tree.c	btrfs: rename btrfs_put_fs_root and btrfs_grab_fs_root	2020-03-23 17:01:33 +01:00
scrub.c	btrfs: rename btrfs_put_fs_root and btrfs_grab_fs_root	2020-03-23 17:01:33 +01:00
send.c	btrfs: rename btrfs_put_fs_root and btrfs_grab_fs_root	2020-03-23 17:01:33 +01:00
send.h
space-info.c	btrfs: describe the space reservation system in general	2020-03-23 17:01:27 +01:00
space-info.h	btrfs: take overcommit into account in inc_block_group_ro	2020-01-31 14:02:01 +01:00
struct-funcs.c	btrfs: tie extent buffer and it's token together	2019-09-09 14:59:16 +02:00
super.c	btrfs: add wrapper for transaction abort predicate	2020-03-23 17:01:34 +01:00
sysfs.c	btrfs: sysfs, unify handler name of devinfo/missing	2020-03-23 17:01:36 +01:00
sysfs.h	btrfs: sysfs, rename device_link add/remove functions	2020-03-23 17:01:35 +01:00
transaction.c	btrfs: switch to per-transaction pinned extents	2020-03-23 17:01:38 +01:00
transaction.h	btrfs: switch to per-transaction pinned extents	2020-03-23 17:01:38 +01:00
tree-checker.c	btrfs: tree-checker: Verify location key for DIR_ITEM/DIR_INDEX	2020-01-20 16:40:56 +01:00
tree-checker.h	btrfs: get fs_info from eb in btrfs_check_chunk_valid	2019-04-29 19:02:39 +02:00
tree-defrag.c	btrfs: open code now trivial btrfs_set_lock_blocking	2019-02-25 14:13:27 +01:00
tree-log.c	btrfs: Make btrfs_pin_extent_for_log_replay take transaction handle	2020-03-23 17:01:37 +01:00
tree-log.h	btrfs: get fs_info from trans in btrfs_set_log_full_commit	2019-04-29 19:02:41 +02:00
ulist.c
ulist.h
uuid-tree.c	btrfs: handle ENOENT in btrfs_uuid_tree_iterate	2019-12-13 14:10:45 +01:00
volumes.c	btrfs: use the page cache for super block reading	2020-03-23 17:01:39 +01:00
volumes.h	btrfs: use the page cache for super block reading	2020-03-23 17:01:39 +01:00
xattr.c	Btrfs: fix failure to persist compression property xattr deletion on fsync	2019-06-17 16:37:17 +02:00
xattr.h	btrfs: cleanup btrfs_setxattr_trans and drop transaction parameter	2019-04-29 19:02:44 +02:00
zlib.c	btrfs: use larger zlib buffer for s390 hardware compression	2020-01-31 10:30:40 -08:00
zstd.c	btrfs: compression: inline free_workspace	2019-11-18 12:46:59 +01:00