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ecc30c7915
linux/fs/gfs2
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Steven Whitehouse ecc30c7915 [GFS2] Streamline indirect pointer tree height calculation 
This patch improves the calculation of the tree height in order to reduce
the number of operations which are carried out on each call to gfs2_block_map.
In the common case, we now make a single comparison, rather than calculating
the required tree height from scratch each time. Also in the case that the
tree does need some extra height, we start from the current height rather from
zero when we work out what the new height ought to be.

In addition the di_height field is moved into the inode proper and reduced
in size to a u8 since the value must be between 0 and GFS2_MAX_META_HEIGHT (10).

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-03-31 10:39:46 +01:00
..
locking Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw 2008-01-25 08:39:18 -08:00
acl.c Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check 2007-07-17 12:00:03 -07:00
acl.h [GFS2] Remove gfs2_check_acl() 2006-11-30 10:37:32 -05:00
bmap.c [GFS2] Streamline indirect pointer tree height calculation 2008-03-31 10:39:46 +01:00
bmap.h [GFS2] Remove function gfs2_get_block 2008-01-25 08:08:25 +00:00
daemon.c [GFS2] Move gfs2_logd into log.c 2008-01-25 08:07:56 +00:00
daemon.h [GFS2] Move gfs2_logd into log.c 2008-01-25 08:07:56 +00:00
dir.c Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 2008-02-07 08:42:26 -08:00
dir.h [GFS2] Clean up inode number handling 2007-07-09 08:22:24 +01:00
eaops.c [GFS2] Remove unrequired code 2008-01-25 08:08:13 +00:00
eaops.h [GFS2] mark struct *_operations const 2007-10-10 08:55:03 +01:00
eattr.c [GFS2] Reduce inode size by moving i_alloc out of line 2008-01-25 08:18:25 +00:00
eattr.h [GFS2] gfs2 misc endianness annotations 2006-11-30 10:33:46 -05:00
gfs2.h [GFS2] Update copyright, tidy up incore.h 2006-09-01 11:05:15 -04:00
glock.c gfs2: make gfs2_glock.gl_owner_pid be a struct pid * 2008-02-07 08:42:06 -08:00
glock.h gfs2: make gfs2_holder.gh_owner_pid be a struct pid * 2008-02-07 08:42:06 -08:00
glops.c [GFS2] Reorder writeback for glock sync 2008-01-25 08:07:42 +00:00
glops.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
incore.h [GFS2] Streamline indirect pointer tree height calculation 2008-03-31 10:39:46 +01:00
inode.c [GFS2] Streamline indirect pointer tree height calculation 2008-03-31 10:39:46 +01:00
inode.h [GFS2] Streamline indirect pointer tree height calculation 2008-03-31 10:39:46 +01:00
Kconfig [DLM/GFS2] indent help text 2007-02-05 13:38:20 -05:00
lm.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
lm.h [GFS2] Use void * instead of typedef for locking module interface 2006-09-08 10:17:58 -04:00
locking.c [GFS2] Export lm_interface to kernel headers 2006-09-19 08:45:18 -04:00
log.c [GFS2] Fix assert in log code 2008-01-25 08:18:03 +00:00
log.h [GFS2] Move gfs2_logd into log.c 2008-01-25 08:07:56 +00:00
lops.c [GFS2] Don't add glocks to the journal 2008-01-25 08:07:52 +00:00
lops.h [GFS2] assertion failure after writing to journaled file, umount 2007-07-09 08:23:47 +01:00
main.c [GFS2] Remove unneeded i_spin 2008-01-25 08:18:44 +00:00
Makefile [GFS2] Use ->page_mkwrite() for mmap() 2008-01-25 08:07:13 +00:00
meta_io.c [GFS2] Fix typo 2008-01-25 08:19:51 +00:00
meta_io.h [GFS2] Remove useless i_cache from inodes 2008-01-25 08:07:16 +00:00
mount.c [GFS2] Add NULL entry to token table 2007-10-10 08:55:34 +01:00
mount.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
ops_address.c Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user 2008-02-05 09:44:13 -08:00
ops_address.h [GFS2] Remove function gfs2_get_block 2008-01-25 08:08:25 +00:00
ops_dentry.c [GFS2] Clean up inode number handling 2007-07-09 08:22:24 +01:00
ops_dentry.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
ops_export.c Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 2008-02-07 08:42:26 -08:00
ops_file.c [GFS2] Fix page_mkwrite truncation race path 2008-01-25 08:20:15 +00:00
ops_fstype.c Introduce path_put() 2008-02-14 21:13:33 -08:00
ops_fstype.h exportfs: make struct export_operations const 2007-10-22 08:13:21 -07:00
ops_inode.c Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 2008-02-07 08:42:26 -08:00
ops_inode.h [GFS2] Remove lock methods for lock_nolock protocol 2008-01-25 08:08:15 +00:00
ops_super.c [GFS2] Remove unused field in struct gfs2_inode 2008-01-25 08:07:18 +00:00
ops_super.h [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
quota.c [GFS2] Reduce inode size by moving i_alloc out of line 2008-01-25 08:18:25 +00:00
quota.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
recovery.c fs/: Spelling fixes 2008-02-03 17:33:42 +02:00
recovery.h [GFS2] split and annotate gfs2_log_head 2006-11-30 10:33:14 -05:00
rgrp.c [GFS2] Reduce inode size by moving i_alloc out of line 2008-01-25 08:18:25 +00:00
rgrp.h [GFS2] Reduce inode size by moving i_alloc out of line 2008-01-25 08:18:25 +00:00
super.c [GFS2] Streamline indirect pointer tree height calculation 2008-03-31 10:39:46 +01:00
super.h [GFS2] Fix sign problem in quota/statfs and cleanup _host structures 2007-07-09 08:23:10 +01:00
sys.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw 2008-01-25 08:39:18 -08:00
sys.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
trans.c [GFS2] Don't add glocks to the journal 2008-01-25 08:07:52 +00:00
trans.h [GFS2] Don't add glocks to the journal 2008-01-25 08:07:52 +00:00
util.c [GFS2] Fix sign problem in quota/statfs and cleanup _host structures 2007-07-09 08:23:10 +01:00
util.h Merge master.kernel.org:/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw 2006-12-07 09:13:20 -08:00