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linux/fs/btrfs
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Filipe Manana cf2404a976 btrfs: add optimized btrfs_ino() version for 64 bits systems 
Currently btrfs_ino() tries to use first the objectid of the inode's
location key. This is to avoid truncation of the inode number on 32 bits
platforms because the i_ino field of struct inode has the unsigned long
type, while the objectid is a 64 bits unsigned type (u64) on every system.
This logic was added in commit 33345d0152 ("Btrfs: Always use 64bit
inode number").

However if we are running on a 64 bits system, we can always directly
return the i_ino value from struct inode, which eliminates the need for
he special if statement that tests for a location key type of
BTRFS_ROOT_ITEM_KEY - in which case i_ino may not have the same value as
the objectid in the inode's location objectid, it may have a value of
BTRFS_EMPTY_SUBVOL_DIR_OBJECTID, for the case of snapshots of trees with
subvolumes/snapshots inside them.

So add a special version for 64 bits system that directly returns i_ino
of struct inode. This eliminates one branch and reduces the overall code
size, since btrfs_ino() is an inline function that is extensively used.

Before:

$ size fs/btrfs/btrfs.ko
   text	   data	    bss	    dec	    hex	filename
1617487	 189240	  29032	1835759	 1c02ef	fs/btrfs/btrfs.ko

After:

$ size fs/btrfs/btrfs.ko
   text	   data	    bss	    dec	    hex	filename
1612028	 189180	  29032	1830240	 1bed60	fs/btrfs/btrfs.ko

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2022-07-25 17:45:41 +02:00
..
tests btrfs: add optimized btrfs_ino() version for 64 bits systems 2022-07-25 17:45:41 +02:00
acl.c btrfs: reserve correct number of items for inode creation 2022-05-16 17:03:08 +02:00
async-thread.c btrfs: simplify WQ_HIGHPRI handling in struct btrfs_workqueue 2022-05-16 17:03:15 +02:00
async-thread.h btrfs: remove unused typedefs get_extent_t and btrfs_work_func_t 2022-07-25 17:45:36 +02:00
backref.c btrfs: sink iterator parameter to btrfs_ioctl_logical_to_ino 2022-07-25 17:45:36 +02:00
backref.h btrfs: sink iterator parameter to btrfs_ioctl_logical_to_ino 2022-07-25 17:45:36 +02:00
block-group.c btrfs: merge calculations for simple striped profiles in btrfs_rmap_block 2022-07-25 17:45:38 +02:00
block-group.h btrfs: zoned: prevent allocation from previous data relocation BG 2022-06-21 14:43:48 +02:00
block-rsv.c btrfs: use enum for btrfs_block_rsv::type 2022-07-25 17:45:40 +02:00
block-rsv.h btrfs: use enum for btrfs_block_rsv::type 2022-07-25 17:45:40 +02:00
btrfs_inode.h btrfs: add optimized btrfs_ino() version for 64 bits systems 2022-07-25 17:45:41 +02:00
check-integrity.c btrfs: check-integrity: simplify bio allocation in btrfsic_read_block 2022-05-16 17:03:12 +02:00
check-integrity.h btrfs: check-integrity: split submit_bio from btrfsic checking 2022-05-16 17:03:12 +02:00
compression.c btrfs: do not return errors from btrfs_map_bio 2022-07-25 17:45:39 +02:00
compression.h btrfs: don't use btrfs_bio_wq_end_io for compressed writes 2022-07-25 17:45:33 +02:00
ctree.c btrfs: sink parameter is_data to btrfs_set_disk_extent_flags 2022-05-16 17:17:31 +02:00
ctree.h btrfs: collect commit stats, count, duration 2022-07-25 17:45:37 +02:00
delalloc-space.c btrfs: avoid blocking on space revervation when doing nowait dio writes 2022-05-16 17:03:10 +02:00
delalloc-space.h
delayed-inode.c btrfs: batch up release of reserved metadata for delayed items used for deletion 2022-07-25 17:45:37 +02:00
delayed-inode.h btrfs: reduce amount of reserved metadata for delayed item insertion 2022-07-25 17:44:36 +02:00
delayed-ref.c btrfs: switch btrfs_block_rsv::full to bool 2022-07-25 17:45:40 +02:00
delayed-ref.h btrfs: remove btrfs_delayed_extent_op::is_data 2022-05-16 17:17:31 +02:00
dev-replace.c btrfs: clean up chained assignments 2022-07-25 17:45:39 +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: use btrfs_for_each_slot in btrfs_search_dir_index_item 2022-05-16 17:03:07 +02:00
discard.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
discard.h btrfs: cleanup btrfs_discard_update_discardable usage 2020-12-08 15:54:02 +01:00
disk-io.c btrfs: set the objectid of the btree inode's location key 2022-07-25 17:45:41 +02:00
disk-io.h btrfs: handle allocation failure in btrfs_wq_submit_bio gracefully 2022-07-25 17:45:40 +02:00
export.c btrfs: locking: rip out path->leave_spinning 2020-12-08 15:54:02 +01:00
export.h
extent_io.c btrfs: remove extent writepage address space operation 2022-07-25 17:45:37 +02:00
extent_io.h btrfs: remove extent writepage address space operation 2022-07-25 17:45:37 +02:00
extent_map.c btrfs: assert we have a write lock when removing and replacing extent maps 2022-03-14 13:13:50 +01:00
extent_map.h btrfs: defrag: don't use merged extent map for their generation check 2022-02-23 17:43:13 +01:00
extent-io-tree.h btrfs: Convert from invalidatepage to invalidate_folio 2022-03-15 08:23:29 -04:00
extent-tree.c btrfs: use named constant for reserved device space 2022-07-25 17:45:36 +02:00
file-item.c btrfs: handle csum lookup errors properly on reads 2022-03-14 13:13:51 +01:00
file.c btrfs: don't fallback to buffered IO for NOWAIT direct IO writes 2022-07-25 17:45:40 +02:00
free-space-cache.c btrfs: clean up chained assignments 2022-07-25 17:45:39 +02:00
free-space-cache.h btrfs: change name and type of private member of btrfs_free_space_ctl 2022-01-03 15:09:50 +01:00
free-space-tree.c btrfs: use rbtree with leftmost node cached for tracking lowest block group 2022-05-16 17:03:13 +02:00
free-space-tree.h
inode-item.c btrfs: make should_throttle loop local in btrfs_truncate_inode_items 2022-01-07 14:18:25 +01:00
inode-item.h btrfs: add inode to truncate control 2022-01-07 14:18:24 +01:00
inode.c btrfs: replace kmap_atomic() with kmap_local_page() 2022-07-25 17:45:41 +02:00
ioctl.c btrfs: sink iterator parameter to btrfs_ioctl_logical_to_ino 2022-07-25 17:45:36 +02:00
Kconfig btrfs: use generic Kconfig option for 256kB page size limit 2022-01-20 08:52:55 +02:00
locking.c btrfs: don't set lock_owner when locking extent buffer for reading 2022-06-21 14:46:56 +02:00
locking.h btrfs: assert that extent buffers are write locked instead of only locked 2021-10-26 19:08:02 +02:00
lzo.c btrfs: replace kmap() with kmap_local_page() in lzo.c 2022-07-25 17:45:33 +02:00
Makefile Kbuild: add -Wno-shift-negative-value where -Wextra is used 2022-03-13 17:30:31 +09:00
misc.h btrfs: use correct header for div_u64 in misc.h 2021-09-07 14:29:50 +02:00
ordered-data.c btrfs: remove the finish_func argument to btrfs_mark_ordered_io_finished 2022-07-25 17:45:37 +02:00
ordered-data.h btrfs: remove the finish_func argument to btrfs_mark_ordered_io_finished 2022-07-25 17:45:37 +02:00
orphan.c
print-tree.c btrfs: unify the error handling pattern for read_tree_block() 2022-03-14 13:13:53 +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: move common inode creation code into btrfs_create_new_inode() 2022-05-16 17:03:08 +02:00
props.h btrfs: move common inode creation code into btrfs_create_new_inode() 2022-05-16 17:03:08 +02:00
qgroup.c btrfs: avoid blocking on space revervation when doing nowait dio writes 2022-05-16 17:03:10 +02:00
qgroup.h btrfs: avoid blocking on space revervation when doing nowait dio writes 2022-05-16 17:03:10 +02:00
raid56.c btrfs: raid56: transfer the bio counter reference to the raid submission helpers 2022-07-25 17:45:40 +02:00
raid56.h btrfs: do not return errors from raid56_parity_recover 2022-07-25 17:45:39 +02:00
rcu-string.h
ref-verify.c btrfs: stop accessing ->extent_root directly 2022-01-03 15:09:49 +01:00
ref-verify.h
reflink.c btrfs: clean up chained assignments 2022-07-25 17:45:39 +02:00
reflink.h
relocation.c Page cache changes for 5.19 2022-05-24 19:55:07 -07:00
root-tree.c btrfs: avoid blocking on space revervation when doing nowait dio writes 2022-05-16 17:03:10 +02:00
scrub.c btrfs: do not return errors from raid56_parity_recover 2022-07-25 17:45:39 +02:00
send.c btrfs: send: add new command FILEATTR for file attributes 2022-07-25 17:45:38 +02:00
send.h btrfs: send: add new command FILEATTR for file attributes 2022-07-25 17:45:38 +02:00
space-info.c btrfs: store chunk size in space-info struct 2022-07-25 17:45:32 +02:00
space-info.h btrfs: store chunk size in space-info struct 2022-07-25 17:45:32 +02:00
struct-funcs.c btrfs: remove redundant check in up check_setget_bounds 2022-07-25 17:45:33 +02:00
subpage.c btrfs: remove extent writepage address space operation 2022-07-25 17:45:37 +02:00
subpage.h btrfs: make nodesize >= PAGE_SIZE case to reuse the non-subpage routine 2022-05-16 17:03:11 +02:00
super.c btrfs: use mask for all RAID1* profiles in btrfs_calc_avail_data_space 2022-07-25 17:45:38 +02:00
sysfs.c btrfs: sysfs: remove BIG_METADATA feature files 2022-07-25 17:45:39 +02:00
sysfs.h btrfs: split and refactor btrfs_sysfs_remove_devices_dir 2020-10-07 12:12:21 +02:00
transaction.c btrfs: clean up chained assignments 2022-07-25 17:45:39 +02:00
transaction.h btrfs: pass btrfs_fs_info for deleting snapshots and cleaner 2022-03-14 13:13:52 +01:00
tree-checker.c btrfs: tree-checker: check extent buffer owner against owner rootid 2022-05-16 17:03:09 +02:00
tree-checker.h btrfs: tree-checker: check extent buffer owner against owner rootid 2022-05-16 17:03:09 +02:00
tree-defrag.c btrfs: remove unnecessary extent root check in btrfs_defrag_leaves 2022-01-03 15:09:48 +01:00
tree-log.c btrfs: tree-log: make the return value for log syncing consistent 2022-07-25 17:45:34 +02:00
tree-log.h btrfs: tree-log: make the return value for log syncing consistent 2022-07-25 17:45:34 +02:00
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 btrfs: drop the _nr from the item helpers 2022-01-03 15:09:43 +01:00
verity.c btrfs: drop the _nr from the item helpers 2022-01-03 15:09:43 +01:00
volumes.c btrfs: raid56: transfer the bio counter reference to the raid submission helpers 2022-07-25 17:45:40 +02:00
volumes.h btrfs: do not return errors from btrfs_map_bio 2022-07-25 17:45:39 +02:00
xattr.c btrfs: use btrfs_for_each_slot in btrfs_listxattr 2022-05-16 17:03:08 +02:00
xattr.h
zlib.c btrfs: zlib: replace kmap() with kmap_local_page() in zlib_decompress_bio() 2022-07-25 17:45:41 +02:00
zoned.c btrfs: zoned: fix comment description for sb_write_pointer logic 2022-07-25 17:44:33 +02:00
zoned.h btrfs: zoned: prevent allocation from previous data relocation BG 2022-06-21 14:43:48 +02:00
zstd.c btrfs: zstd: replace kmap() with kmap_local_page() 2022-07-25 17:45:40 +02:00