Steven Whitehouse 7a6bbacbb8 [GFS2] Map multiple blocks at once where possible ... This is a tidy up of the GFS2 bmap code. The main change is that the bh is passed to gfs2_block_map allowing the flags to be set directly rather than having to repeat that code several times in ops_address.c. At the same time, the extent mapping code from gfs2_extent_map has been moved into gfs2_block_map. This allows all calls to gfs2_block_map to map extents in the case that no allocation is taking place. As a result reads and non-allocating writes should be faster. A quick test with postmark appears to support this. There is a limit on the number of blocks mapped in a single bmap call in that it will only ever map blocks which are pointed to from a single pointer block. So in other words, it will never try to do additional i/o in order to satisfy read-ahead. The maximum number of blocks is thus somewhat less than 512 (the GFS2 4k block size minus the header divided by sizeof(u64)). I've further limited the mapping of "normal" blocks to 32 blocks (to avoid extra work) since readpages() will currently read a maximum of 32 blocks ahead (128k). Some further work will probably be needed to set a suitable value for DIO as well, but for now thats left at the maximum 512 (see ops_address.c:gfs2_get_block_direct). There is probably a lot more that can be done to improve bmap for GFS2, but this is a good first step. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>		2006-09-18 17:18:23 -04:00
..
9p	[PATCH] 9p: fix fid behavior on failed remove	2006-07-31 13:28:44 -07:00
adfs	[PATCH] adfs error message fix	2006-08-14 12:54:28 -07:00
affs	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
afs	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
autofs	[PATCH] VFS: Permit filesystem to override root dentry on mount	2006-06-23 07:42:45 -07:00
autofs4	[PATCH] fs: use list_move()	2006-06-26 09:58:18 -07:00
befs	[PATCH] Fix BeFS slab corruption	2006-08-06 08:57:48 -07:00
bfs	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
cifs	[CIFS] Fix CIFS readdir access denied when SE Linux enabled	2006-09-06 22:02:22 +00:00
coda	[PATCH] Remove incorrect unlock_kernel from allocation failure path in coda_open()	2006-07-31 13:28:41 -07:00
configfs	Merge rsync://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	2006-07-03 10:25:08 -04:00
cramfs	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
debugfs	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
devpts	[PATCH] VFS: Permit filesystem to override root dentry on mount	2006-06-23 07:42:45 -07:00
dlm	[DLM] confirm master for recovered waiting requests	2006-09-08 17:00:12 -04:00
efs	[PATCH] efs: Remove incorrect unlock_kernel from failure path in efs_symlink_readpage()	2006-07-31 13:28:41 -07:00
exportfs	[PATCH] NFS server subtree_check returns dubious value	2006-05-21 12:59:16 -07:00
ext2	[PATCH] ext2: prevent div-by-zero on corrupted fs	2006-08-27 11:01:30 -07:00
ext3	[PATCH] ext3_getblk() should handle HOLE correctly	2006-09-08 10:22:50 -07:00
fat	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
freevxfs	[PATCH] freevxfs: Add missing lock_kernel() to vxfs_readdir	2006-07-31 13:28:44 -07:00
fuse	[PATCH] fuse: fix error case in fuse_readpages	2006-08-14 12:54:29 -07:00
gfs2	[GFS2] Map multiple blocks at once where possible	2006-09-18 17:18:23 -04:00
hfs	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
hfsplus	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
hostfs	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
hpfs	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
hppfs	[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry	2006-06-23 07:42:45 -07:00
hugetlbfs	[PATCH] mmap zero-length hugetlb file with PROT_NONE to protect a hugetlb virtual area	2006-07-10 13:24:21 -07:00
isofs	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
jbd	[PATCH] manage-jbd-its-own-slab fix	2006-09-01 11:39:10 -07:00
jffs	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
jffs2	Merge git://git.infradead.org/mtd-2.6	2006-07-03 21:29:08 -07:00
jfs	JFS: Fix bug in quota code. tmp_bh.b_size must be initialized	2006-07-28 08:46:05 -05:00
lockd	LOCKD: Fix a deadlock in nlm_traverse_files()	2006-08-24 15:51:00 -04:00
minix	[PATCH] Fix for minix crash	2006-08-27 11:01:30 -07:00
msdos	[PATCH] VFS: Permit filesystem to override root dentry on mount	2006-06-23 07:42:45 -07:00
ncpfs	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial	2006-06-30 15:39:30 -07:00
nfs	[PATCH] NFS: large non-page-aligned direct I/O clobbers memory	2006-09-08 10:22:51 -07:00
nfs_common	[PATCH] nfsacl: Solaris VxFS compatibility fix	2005-10-11 09:46:54 -07:00
nfsd	[PATCH] knfsd: Fix stale file handle problem with subtree_checking.	2006-07-31 13:28:37 -07:00
nls	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
ntfs	[PATCH] lockdep: annotate NTFS locking rules	2006-07-03 15:27:08 -07:00
ocfs2	ocfs2: allocation hints	2006-08-07 11:07:01 -07:00
openpromfs	[OPENPROMFS]: Rewrite using in-kernel device tree and seq_file.	2006-06-25 23:19:14 -07:00
partitions	[DISKLABEL] SUN: Fix signed int usage for sector count	2006-08-26 17:55:55 -07:00
proc	[PATCH] /proc/meminfo: don't put spaces in names	2006-08-27 11:01:33 -07:00
qnx4	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
ramfs	[PATCH] NOMMU: Fix execution off of ramfs with mmap()	2006-07-10 13:24:21 -07:00
reiserfs	[PATCH] lockdep: annotate reiserfs	2006-08-27 11:01:32 -07:00
romfs	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
smbfs	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
sysfs	[PATCH] lockdep: annotate the sysfs i_mutex to be a separate class	2006-07-12 12:52:54 -07:00
sysv	[PATCH] mark address_space_operations const	2006-06-28 14:59:04 -07:00
udf	Fix possible UDF deadlock and memory corruption (CVE-2006-4145)	2006-08-22 12:52:23 -07:00
ufs	[PATCH] ufs: truncate correction	2006-08-27 11:01:31 -07:00
vfat	[PATCH] VFS: Permit filesystem to override root dentry on mount	2006-06-23 07:42:45 -07:00
xfs	[XFS] Fix a bad pointer dereference in the quota statvfs handling.	2006-09-07 14:27:23 +10:00
aio.c	spelling fixes	2006-06-26 18:35:02 +02:00
attr.c	[PATCH] capable/capability.h (fs/)	2006-01-11 18:42:13 -08:00
bad_inode.c	[PATCH] Make most file operations structs in fs/ const	2006-03-28 09:16:06 -08:00
binfmt_aout.c	[PATCH] dump_thread() cleanup	2006-01-10 08:01:25 -08:00
binfmt_elf_fdpic.c	[PATCH] FDPIC: Add coredump capability for the ELF-FDPIC binfmt	2006-07-10 13:24:22 -07:00
binfmt_elf.c	[PATCH] FDPIC: Move roundup() into linux/kernel.h	2006-07-10 13:24:22 -07:00
binfmt_em86.c
binfmt_flat.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
binfmt_misc.c	Merge branch 'master' of /home/trondmy/kernel/linux-2.6/	2006-06-24 13:07:53 -04:00
binfmt_script.c
binfmt_som.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
bio.c	[PATCH] Fix missing ret assignment in __bio_map_user() error path	2006-06-17 10:52:12 -07:00
block_dev.c	[PATCH] lockdep: fix blkdev_open() warning	2006-08-27 11:01:29 -07:00
buffer.c	[PATCH] invalidate_bdev() speedup	2006-07-31 13:28:38 -07:00
char_dev.c	[PATCH] add function documentation for register_chrdev()	2006-07-14 21:53:54 -07:00
compat_ioctl.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
compat.c	[PATCH] x86_64: Add compat_printk and sysctl to turn off compat layer warnings	2006-06-26 10:48:16 -07:00
dcache.c	[PATCH] lockdep: annotate dcache	2006-07-03 15:27:06 -07:00
dcookies.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
direct-io.c	[PATCH] lockdep: annotate direct io	2006-07-03 15:27:06 -07:00
dnotify.c	[PATCH] Use __read_mostly on some hot fs variables	2006-03-26 08:56:56 -08:00
dquot.c	[PATCH] use list_add_tail() instead of list_add()	2006-06-26 09:58:17 -07:00
drop_caches.c	[PATCH] drop-pagecache	2006-01-08 20:12:40 -08:00
eventpoll.c	[PATCH] eventpoll.c compile fix	2006-08-27 11:01:31 -07:00
exec.c	[PATCH] fix up lockdep trace in fs/exec.c	2006-08-27 11:01:32 -07:00
fcntl.c	BUG_ON() Conversion in fs/fcntl.c	2006-04-02 13:37:19 +02:00
fifo.c	[PATCH] pipe.c/fifo.c code cleanups	2006-04-11 13:53:33 +02:00
file_table.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
file.c	[PATCH] alloc_fdtable() expansion fix	2006-07-12 12:52:55 -07:00
filesystems.c	[PATCH] fix missing includes	2005-10-30 17:37:32 -08:00
fs-writeback.c	[PATCH] zoned vm counters: conversion of nr_unstable to per zone counter	2006-06-30 11:25:36 -07:00
inode.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial	2006-06-30 15:39:30 -07:00
inotify_user.c	[PATCH] inotify: fix deadlock found by lockdep	2006-07-31 13:28:41 -07:00
inotify.c	[PATCH] inotify (4/5): allow watch removal from event handler	2006-06-20 05:25:19 -04:00
ioctl.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
ioprio.c	[PATCH] uninline ioprio_best()	2006-08-21 10:02:50 +02:00
Kconfig	Merge branch 'master'	2006-07-17 09:25:26 -04:00
Kconfig.binfmt	[PATCH] frv: suppress configuration of certain features for FRV	2006-01-08 20:13:36 -08:00
libfs.c	[PATCH] core: use list_move()	2006-06-26 09:58:17 -07:00
locks.c	[PATCH] fcntl(F_SETSIG) fix	2006-08-14 13:10:59 -07:00
Makefile	Merge rsync://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	2006-07-03 10:25:08 -04:00
mbcache.c	[PATCH] Typo fixes	2006-03-28 09:16:08 -08:00
mpage.c	[PATCH] writeback: fix range handling	2006-06-23 07:42:49 -07:00
namei.c	VFS: Fix access("file", X_OK) in the presence of ACLs	2006-08-24 15:54:58 -04:00
namespace.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
nfsctl.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
open.c	[PATCH] ftruncate does not always update m/ctime	2006-06-25 10:01:15 -07:00
pipe.c	[PATCH] VFS: Permit filesystem to override root dentry on mount	2006-06-23 07:42:45 -07:00
pnode.c	[PATCH] core: use list_move()	2006-06-26 09:58:17 -07:00
pnode.h	[PATCH] unbindable mounts	2005-11-07 18:18:11 -08:00
posix_acl.c	[PATCH] gfp flags annotations - part 1	2005-10-08 15:00:57 -07:00
quota_v1.c
quota_v2.c	[PATCH] sem2mutex: quota	2006-03-23 07:38:11 -08:00
quota.c	[PATCH] sem2mutex: quota	2006-03-23 07:38:11 -08:00
read_write.c	[PATCH] fs/read_write.c: EXPORT_UNUSED_SYMBOL	2006-07-10 13:24:18 -07:00
readdir.c	[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem	2006-01-09 15:59:24 -08:00
select.c	[PATCH] fs: sys_poll with timeout -1 bug fix	2006-06-25 10:01:22 -07:00
seq_file.c	[PATCH] sem2mutex: fs/seq_file.c	2006-03-23 07:38:12 -08:00
splice.c	[PATCH] splice: fix problems with sys_tee()	2006-07-10 11:00:01 +02:00
stat.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
super.c	[PATCH] add missing desctiption in super.c	2006-09-06 11:00:01 -07:00
sync.c	[PATCH] writeback: fix range handling	2006-06-23 07:42:49 -07:00
xattr_acl.c
xattr.c	[PATCH] log more info for directory entry change events	2006-06-20 05:25:28 -04:00