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OpenCloudOS-Kernel/fs/gfs2
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Bob Peterson 6aa7640f30 GFS2: optimize rbm_from_block wrt bi_start 
In function gfs2_rbm_from_block, it starts by checking if the block
falls within the first bitmap. It does so by checking if the rbm's
offset is less than (rbm->bi->bi_start + rbm->bi->bi_len) * GFS2_NBBY.
However, the first bitmap will always have bi_start==0. Therefore
this is an unnecessary calculation in a function that gets called
billions of times. This patch removes the reference to bi_start.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
 		2013-09-17 10:14:39 +01:00
..
Kconfig Finally eradicate CONFIG_HOTPLUG 2013-06-03 14:20:18 -07:00
Makefile GFS2: Rename ops_inode.c to inode.c 2011-05-10 13:12:49 +01:00
acl.c gfs2: Use uid_eq and gid_eq where appropriate 2013-02-13 06:15:10 -08:00
acl.h fs: take the ACL checks to common code 2011-07-25 14:30:23 -04:00
aops.c GFS2: dirty inode correctly in gfs2_write_end 2013-09-05 09:04:24 +01:00
bmap.c truncate: drop 'oldsize' truncate_pagecache() parameter 2013-09-12 15:38:02 -07:00
bmap.h GFS2: New truncate sequence 2010-09-20 11:18:16 +01:00
dentry.c gfs2: use check_submounts_and_drop() 2013-09-05 16:23:51 -04:00
dir.c treewide: Add __GFP_NOWARN to k.alloc calls with v.alloc fallbacks 2013-08-20 13:06:40 +02:00
dir.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw 2013-07-02 09:41:18 -07:00
export.c [readdir] constify ->actor 2013-06-29 12:57:05 +04:00
file.c GFS2: dirty inode correctly in gfs2_write_end 2013-09-05 09:04:24 +01:00
gfs2.h [GFS2] Remove remote lock dropping code 2008-06-27 09:39:44 +01:00
glock.c fs: convert fs shrinkers to new scan/count API 2013-09-10 18:56:31 -04:00
glock.h GFS2: Remove gfs2_refresh_inode from inode creation path 2013-04-08 08:40:17 +01:00
glops.c GFS2: don't overrun reserved revokes 2013-08-19 09:33:16 +01:00
glops.h GFS2: Fix AIL flush issue during fsync 2011-10-21 12:39:41 +01:00
incore.h GFS2: Add origin indicator to glock callbacks 2013-04-10 10:26:55 +01:00
inode.c GFS2: d_splice_alias() can't return error 2013-09-17 10:04:07 +01:00
inode.h GFS2: Add atomic_open support 2013-06-14 11:17:15 +01:00
lock_dlm.c GFS2: use memchr_inv 2013-04-04 09:52:50 +01:00
log.c GFS2: aggressively issue revokes in gfs2_log_flush 2013-06-19 09:41:59 +01:00
log.h GFS2: aggressively issue revokes in gfs2_log_flush 2013-06-19 09:41:59 +01:00
lops.c GFS2: Move gfs2_sync_meta to lops.c 2013-08-19 17:26:32 +01:00
lops.h GFS2: Eliminate gfs2_rg_lops 2013-06-05 09:50:40 +01:00
main.c fs: convert fs shrinkers to new scan/count API 2013-09-10 18:56:31 -04:00
meta_io.c GFS2: Move gfs2_sync_meta to lops.c 2013-08-19 17:26:32 +01:00
meta_io.h GFS2: Move gfs2_sync_meta to lops.c 2013-08-19 17:26:32 +01:00
ops_fstype.c GFS2: Don't flag consistency error if first mounter is a spectator 2013-09-05 09:03:57 +01:00
quota.c fs: convert fs shrinkers to new scan/count API 2013-09-10 18:56:31 -04:00
quota.h fs: convert fs shrinkers to new scan/count API 2013-09-10 18:56:31 -04:00
recovery.c GFS2: fail mount if journal recovery fails 2012-01-11 09:24:48 +00:00
recovery.h gfs2: use workqueue instead of slow-work 2010-07-23 13:14:25 +02:00
rgrp.c GFS2: optimize rbm_from_block wrt bi_start 2013-09-17 10:14:39 +01:00
rgrp.h GFS2: Remove vestigial parameter ip from function rs_deltree 2013-04-08 08:41:04 +01:00
super.c GFS2: Don't cache iopen glocks 2013-06-03 16:40:22 +01:00
super.h GFS2: Clean up freeze code 2013-01-29 10:29:05 +00:00
sys.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
sys.h GFS2: dlm based recovery coordination 2012-01-11 09:23:05 +00:00
trace_gfs2.h GFS2: Add origin indicator to glock demote tracing 2013-04-10 10:32:05 +01:00
trans.c GFS2: fix warning message 2013-06-19 21:29:19 +01:00
trans.h GFS2: Split gfs2_trans_add_bh() into two 2013-01-29 10:28:04 +00:00
util.c GFS2: Reinstate withdraw ack system 2013-02-13 12:21:40 +00:00
util.h GFS2: Fix error handling when reading an invalid block from the journal 2012-06-06 11:27:49 +01:00
xattr.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2013-02-25 16:00:49 -08:00
xattr.h sanitize xattr handler prototypes 2009-12-16 12:16:49 -05:00