Dave Chinner 32c5483a8a xfs: abstract the differences in dir2/dir3 via an ops vector ... Lots of the dir code now goes through switches to determine what is the correct on-disk format to parse. It generally involves a "xfs_sbversion_hasfoo" check, deferencing the superblock version and feature fields and hence touching several cache lines per operation in the process. Some operations do multiple checks because they nest conditional operations and they don't pass the information in a direct fashion between each other. Hence, add an ops vector to the xfs_inode structure that is configured when the inode is initialised to point to all the correct decode and encoding operations. This will significantly reduce the branchiness and cacheline footprint of the directory object decoding and encoding. This is the first patch in a series of conversion patches. It will introduce the ops structure, the setup of it and add the first operation to the vector. Subsequent patches will convert directory ops one at a time to keep the changes simple and obvious. Just this patch shows the benefit of such an approach on code size. Just converting the two shortform dir operations as this patch does decreases the built binary size by ~1500 bytes: $ size fs/xfs/xfs.o.orig fs/xfs/xfs.o.p1 text data bss dec hex filename 794490 96802 1096 892388 d9de4 fs/xfs/xfs.o.orig 792986 96802 1096 890884 d9804 fs/xfs/xfs.o.p1 $ That's a significant decrease in the instruction cache footprint of the directory code for such a simple change, and indicates that this approach is definitely worth pursuing further. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ben Myers <bpm@sgi.com>		2013-10-30 13:37:38 -05:00
..
Kconfig	xfs: introduce CONFIG_XFS_WARN	2013-05-07 18:45:36 -05:00
kmem.c	xfs: factor all the kmalloc-or-vmalloc fallback allocations	2013-09-10 13:57:03 -05:00
kmem.h	xfs: factor all the kmalloc-or-vmalloc fallback allocations	2013-09-10 13:57:03 -05:00
Makefile	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
mrlock.h	xfs: introduce CONFIG_XFS_WARN	2013-05-07 18:45:36 -05:00
time.h	xfs: remove subdirectories	2011-08-12 16:21:35 -05:00
uuid.c	xfs: remove subdirectories	2011-08-12 16:21:35 -05:00
uuid.h	xfs: add CRC infrastructure	2012-11-19 20:11:24 -06:00
xfs_acl.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_acl.h	xfs: increase number of ACL entries for V5 superblocks	2013-06-06 10:52:15 -05:00
xfs_ag.h	xfs: create a shared header file for format-related information	2013-10-23 14:11:30 -05:00
xfs_alloc_btree.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_alloc_btree.h	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_alloc.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_alloc.h	xfs: create a shared header file for format-related information	2013-10-23 14:11:30 -05:00
xfs_aops.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_aops.h	direct-io: Implement generic deferred AIO completions	2013-09-04 09:23:46 -04:00
xfs_attr_inactive.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_attr_leaf.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_attr_leaf.h	xfs: unify directory/attribute format definitions	2013-10-23 14:21:40 -05:00
xfs_attr_list.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_attr_remote.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_attr_remote.h	xfs: unify directory/attribute format definitions	2013-10-23 14:21:40 -05:00
xfs_attr_sf.h
xfs_attr.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_attr.h	xfs: kill xfs_vnodeops.[ch]	2013-08-12 16:53:39 -05:00
xfs_bit.c	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_bit.h
xfs_bmap_btree.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_bmap_btree.h	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_bmap_util.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_bmap_util.h	xfs: fold xfs_change_file_space into xfs_ioc_space	2013-10-21 16:57:03 -05:00
xfs_bmap.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_bmap.h	xfs: remove __KERNEL__ from debug code	2013-08-12 16:58:37 -05:00
xfs_btree.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_btree.h	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_buf_item.c	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_buf_item.h	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_buf.c	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_buf.h	xfs: rework buffer dispose list tracking	2013-09-10 18:56:31 -04:00
xfs_cksum.h	xfs: add CRC infrastructure	2012-11-19 20:11:24 -06:00
xfs_da_btree.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_da_btree.h	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_da_format.c	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_da_format.h	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_dinode.h	xfs: di_flushiter considered harmful	2013-07-25 10:41:42 -05:00
xfs_dir2_block.c	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_dir2_data.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_dir2_leaf.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_dir2_node.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_dir2_priv.h	xfs: Add read-only support for dirent filetype field	2013-08-22 08:40:24 -05:00
xfs_dir2_readdir.c	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_dir2_sf.c	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_dir2.c	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_dir2.h	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_discard.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_discard.h	xfs: remove subdirectories	2011-08-12 16:21:35 -05:00
xfs_dquot_buf.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_dquot_item.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_dquot_item.h	xfs: remove subdirectories	2011-08-12 16:21:35 -05:00
xfs_dquot.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_dquot.h	xfs: create a shared header file for format-related information	2013-10-23 14:11:30 -05:00
xfs_error.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_error.h
xfs_export.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_export.h	xfs: remove subdirectories	2011-08-12 16:21:35 -05:00
xfs_extent_busy.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_extent_busy.h	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_extfree_item.c	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_extfree_item.h	xfs: split out EFI/EFD log item format definition	2013-08-12 16:07:13 -05:00
xfs_file.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_filestream.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_filestream.h	xfs: xfs_filestreams.h doesn't need __KERNEL__	2013-08-12 17:00:11 -05:00
xfs_format.h	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_fs.h	xfs: add the inode directory type support to XFS_IOC_FSGEOM	2013-10-08 14:28:09 -05:00
xfs_fsops.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_fsops.h
xfs_globals.c	xfs: add background scanning to clear eofblocks inodes	2012-11-08 15:34:59 -06:00
xfs_ialloc_btree.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_ialloc_btree.h	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_ialloc.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_ialloc.h	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_icache.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_icache.h	xfs: update #2 for v3.12-rc1	2013-09-12 16:13:41 -07:00
xfs_icreate_item.c	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_icreate_item.h	xfs: separate icreate log format definitions from xfs_icreate_item.h	2013-08-12 16:10:35 -05:00
xfs_inode_buf.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_inode_buf.h	xfs: create a shared header file for format-related information	2013-10-23 14:11:30 -05:00
xfs_inode_fork.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_inode_fork.h	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_inode_item.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_inode_item.h	xfs: split out inode log item format definition	2013-08-12 16:05:19 -05:00
xfs_inode.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_inode.h	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_inum.h	xfs: move xfsagino_t to xfs_types.h	2012-05-14 16:20:54 -05:00
xfs_ioctl32.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_ioctl32.h	xfs: remove subdirectories	2011-08-12 16:21:35 -05:00
xfs_ioctl.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_ioctl.h	xfs: consolidate extent swap code	2013-08-12 16:56:06 -05:00
xfs_iomap.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_iomap.h	xfs: get rid of count from xfs_iomap_write_allocate()	2013-10-01 15:42:34 -05:00
xfs_iops.c	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_iops.h	xfs: fold xfs_change_file_space into xfs_ioc_space	2013-10-21 16:57:03 -05:00
xfs_itable.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_itable.h
xfs_linux.h	xfs: remove two unused macro definitions in xfs_linux.h	2013-08-20 15:30:23 -05:00
xfs_log_cil.c	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_log_format.h	xfs: create a shared header file for format-related information	2013-10-23 14:11:30 -05:00
xfs_log_priv.h	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_log_recover.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_log_recover.h
xfs_log_rlimit.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_log.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_log.h	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_message.c	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_message.h	xfs: introduce CONFIG_XFS_WARN	2013-05-07 18:45:36 -05:00
xfs_mount.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_mount.h	xfs: abstract the differences in dir2/dir3 via an ops vector	2013-10-30 13:37:38 -05:00
xfs_mru_cache.c
xfs_mru_cache.h
xfs_qm_bhv.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_qm_syscalls.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_qm.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_qm.h	xfs: split dquot buffer operations out	2013-10-23 14:28:35 -05:00
xfs_quota_defs.h	xfs: split dquot buffer operations out	2013-10-23 14:28:35 -05:00
xfs_quota_priv.h	xfs: use per-filesystem radix trees for dquot lookup	2012-03-14 11:09:06 -05:00
xfs_quota.h	xfs: split dquot buffer operations out	2013-10-23 14:28:35 -05:00
xfs_quotaops.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_rtalloc.c	xfs: split xfs_rtalloc.c for userspace sanity	2013-10-23 17:16:32 -05:00
xfs_rtalloc.h	xfs: split xfs_rtalloc.c for userspace sanity	2013-10-23 17:16:32 -05:00
xfs_rtbitmap.c	xfs: split xfs_rtalloc.c for userspace sanity	2013-10-23 17:16:32 -05:00
xfs_sb.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_sb.h	xfs: create a shared header file for format-related information	2013-10-23 14:11:30 -05:00
xfs_shared.h	xfs: create a shared header file for format-related information	2013-10-23 14:11:30 -05:00
xfs_stats.c	xfs: use common code for quota statistics	2012-03-14 11:09:06 -05:00
xfs_stats.h	xfs: use common code for quota statistics	2012-03-14 11:09:06 -05:00
xfs_super.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_super.h	xfs: xfs_sync_data is redundant.	2012-10-17 12:01:25 -05:00
xfs_symlink_remote.c	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_symlink.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_symlink.h	xfs: push down inactive transaction mgmt for remote symlinks	2013-10-08 14:53:02 -05:00
xfs_sysctl.c	xfs: Convert use of typedef ctl_table to struct ctl_table	2013-06-17 17:42:25 -05:00
xfs_sysctl.h	xfs: add background scanning to clear eofblocks inodes	2012-11-08 15:34:59 -06:00
xfs_trace.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_trace.h	xfs: update for 3.11-rc1	2013-07-09 12:29:12 -07:00
xfs_trans_ail.c	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_trans_buf.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_trans_dquot.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_trans_extfree.c	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_trans_inode.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_trans_priv.h	xfs: decouple log and transaction headers	2013-10-23 16:17:44 -05:00
xfs_trans_resv.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_trans_resv.h	xfs: Get rid of all XFS_XXX_LOG_RES() macro	2013-08-12 17:48:08 -05:00
xfs_trans_space.h
xfs_trans.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_trans.h	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs_types.h	xfs: Add read-only support for dirent filetype field	2013-08-22 08:40:24 -05:00
xfs_vnode.h	xfs: clean up xfs_inactive() error handling, kill VN_INACTIVE_[NO]CACHE	2013-10-08 17:20:41 -05:00
xfs_xattr.c	xfs: decouple inode and bmap btree header files	2013-10-23 16:28:49 -05:00
xfs.h	xfs: introduce CONFIG_XFS_WARN	2013-05-07 18:45:36 -05:00