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linux-stable/fs/btrfs
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Jeff Mahoney c2951f32d3 btrfs: remove old tree_root dirent processing in btrfs_real_readdir() 
Commit 3de4586c52 (Btrfs: Allow subvolumes and snapshots anywhere
in the directory tree) introduced the current system of placing
snapshots in the directory tree.  It also introduced the behavior of
creating the snapshot and then creating the directory entries for it.

We've kept this code around for compatibility reasons, but it turns
out that no file systems with the old tree_root based snapshots can
be mounted on newer (>= 2009) kernels anyway.  About a month after the
above commit, commit 2a7108ad89 (Btrfs: rev the disk format for the
inode compat and csum selection changes) landed, changing the superblock
magic number.

As a result, we know that we'll never encounter tree_root-based dirents
or have to deal with skipping our own snapshot dirents.  Since that
also means that we're now only iterating over DIR_INDEX items, which only
contain one directory entry per leaf item, we don't need to loop over
the leaf item contents anymore either.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2016-11-30 13:45:19 +01:00
..
tests btrfs: remove constant parameter to memset_extent_buffer and rename it 2016-11-30 13:45:17 +01:00
acl.c posix_acl: Clear SGID bit when setting file permissions 2016-09-22 10:55:32 +02:00
async-thread.c btrfs: plumb fs_info into btrfs_work 2016-07-26 13:53:15 +02:00
async-thread.h btrfs: plumb fs_info into btrfs_work 2016-07-26 13:53:15 +02:00
backref.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
backref.h
btrfs_inode.h Btrfs: add a flags field to btrfs_fs_info 2016-09-26 17:59:49 +02:00
check-integrity.c btrfs: don't abuse REQ_OP_* flags for btrfs_map_block 2016-11-29 14:10:38 +01:00
check-integrity.h fs: have submit_bh users pass in op and flags separately 2016-06-07 13:41:38 -06:00
compression.c btrfs: change btrfs_csum_final result param type to u8 2016-11-30 13:45:18 +01:00
compression.h btrfs: move btrfs_compression_type to compression.h 2016-03-11 17:12:46 +01:00
ctree.c btrfs: add optimized version of eb to eb copy 2016-11-30 13:45:17 +01:00
ctree.h btrfs: store and load values of stripes_min/stripes_max in balance status item 2016-11-30 13:45:18 +01:00
dedupe.h btrfs: expand cow_file_range() to support in-band dedup and subpage-blocksize 2016-07-26 13:52:25 +02:00
delayed-inode.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
delayed-inode.h Btrfs: fix ->iterate_shared() by upgrading i_rwsem for delayed nodes 2016-06-25 06:20:10 -07:00
delayed-ref.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
delayed-ref.h Btrfs: remove unused function btrfs_add_delayed_qgroup_reserve() 2016-08-03 11:02:51 +01:00
dev-replace.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
dev-replace.h btrfs: refactor btrfs_dev_replace_start for reuse 2016-04-28 10:59:13 +02:00
dir-item.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
disk-io.c btrfs: change btrfs_csum_final result param type to u8 2016-11-30 13:45:18 +01:00
disk-io.h btrfs: change btrfs_csum_final result param type to u8 2016-11-30 13:45:18 +01:00
export.c
export.h
extent-tree.c btrfs: remove constant parameter to memset_extent_buffer and rename it 2016-11-30 13:45:17 +01:00
extent_io.c btrfs: add optimized version of eb to eb copy 2016-11-30 13:45:17 +01:00
extent_io.h btrfs: add optimized version of eb to eb copy 2016-11-30 13:45:17 +01:00
extent_map.c btrfs: Fix slab accounting flags 2016-07-26 13:52:25 +02:00
extent_map.h
file-item.c btrfs: remove constant parameter to memset_extent_buffer and rename it 2016-11-30 13:45:17 +01:00
file.c btrfs: remove unused headers, statfs.h 2016-11-30 13:45:14 +01:00
free-space-cache.c btrfs: remove redundant check of btrfs_iget return value 2016-11-30 13:45:18 +01:00
free-space-cache.h btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
free-space-tree.c Merge branch 'fst-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.9 2016-10-12 13:16:00 -07:00
free-space-tree.h
hash.c btrfs: advertise which crc32c implementation is being used at module load 2016-06-06 14:08:28 +02:00
hash.h btrfs: advertise which crc32c implementation is being used at module load 2016-06-06 14:08:28 +02:00
inode-item.c btrfs: rename btrfs_std_error to btrfs_handle_fs_error 2016-04-28 10:36:54 +02:00
inode-map.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
inode-map.h
inode.c btrfs: remove old tree_root dirent processing in btrfs_real_readdir() 2016-11-30 13:45:19 +01:00
ioctl.c btrfs: return early from failed memory allocations in ioctl handlers 2016-11-30 13:45:18 +01:00
Kconfig
locking.c
locking.h
lzo.c btrfs: convert printk(KERN_* to use pr_* calls 2016-09-26 18:08:44 +02:00
Makefile
math.h
ordered-data.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
ordered-data.h Btrfs: fix race setting block group readonly during device replace 2016-05-30 12:58:21 +01:00
orphan.c
print-tree.c btrfs: convert printk(KERN_* to use pr_* calls 2016-09-26 18:08:44 +02:00
print-tree.h
props.c btrfs: simpilify btrfs_subvol_inherit_props 2016-07-26 13:54:22 +02:00
props.h
qgroup.c btrfs: rename helper macros for qgroup and aux data casts 2016-11-30 13:45:15 +01:00
qgroup.h btrfs: qgroup: Refactor btrfs_qgroup_insert_dirty_extent() 2016-08-25 03:58:21 -07:00
raid56.c Btrfs: remove BUG() in raid56 2016-09-26 17:59:49 +02:00
raid56.h
rcu-string.h
reada.c btrfs: reada, remove pointless BUG_ON check for fs_info 2016-11-30 13:45:16 +01:00
relocation.c btrfs: remove constant parameter to memset_extent_buffer and rename it 2016-11-30 13:45:17 +01:00
root-tree.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
scrub.c btrfs: don't abuse REQ_OP_* flags for btrfs_map_block 2016-11-29 14:10:38 +01:00
send.c Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2016-10-28 10:07:35 -07:00
send.h
struct-funcs.c btrfs: fix string and comment grammatical issues and typos 2016-05-25 22:35:14 +02:00
super.c btrfs: remove stale comment from btrfs_statfs 2016-11-30 13:45:15 +01:00
sysfs.c btrfs: convert printk(KERN_* to use pr_* calls 2016-09-26 18:08:44 +02:00
sysfs.h
transaction.c Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2016-10-11 11:23:06 -07:00
transaction.h btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
tree-defrag.c
tree-log.c Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2016-10-28 10:07:35 -07:00
tree-log.h Btrfs: fix lockdep warning on deadlock against an inode's log mutex 2016-08-25 03:58:32 -07:00
ulist.c btrfs: fix string and comment grammatical issues and typos 2016-05-25 22:35:14 +02:00
ulist.h
uuid-tree.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
volumes.c btrfs: remove constant parameter to memset_extent_buffer and rename it 2016-11-30 13:45:17 +01:00
volumes.h btrfs: don't abuse REQ_OP_* flags for btrfs_map_block 2016-11-29 14:10:38 +01:00
xattr.c fs: Replace current_fs_time() with current_time() 2016-09-27 21:06:22 -04:00
xattr.h btrfs: Switch to generic xattr handlers 2016-05-17 19:17:09 -04:00
zlib.c btrfs: Call kunmap if zlib_inflateInit2 fails 2016-11-30 13:45:18 +01:00