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linux/fs/ocfs2
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Joel Becker 7bb458a585 ocfs2: Another hamming code optimization. 
In the calc_code_bit() function, we must find all powers of two beneath
the code bit number, *after* it's shifted by those powers of two.  This
requires a loop to see where it ends up.

We can optimize it by starting at its most significant bit.  This shaves
32% off the time, for a total of 67.6% shaved off of the original, naive
implementation.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2009-01-05 08:40:35 -08:00
..
cluster
ocfs2/quota: Add QUOTA in mlog_attribute.
2009-01-05 08:40:30 -08:00
dlm
Merge branch 'master' into next
2008-12-04 17:16:36 +11:00
acl.c
ocfs2: add ocfs2_init_acl in mknod
2009-01-05 08:34:20 -08:00
acl.h
ocfs2: add ocfs2_init_acl in mknod
2009-01-05 08:34:20 -08:00
alloc.c
ocfs2: Create ocfs2_xattr_value_buf.
2009-01-05 08:40:32 -08:00
alloc.h
ocfs2: Create ocfs2_xattr_value_buf.
2009-01-05 08:40:32 -08:00
aops.c
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
2009-01-05 08:40:32 -08:00
aops.h
ocfs2: convert to new aops
2007-10-16 09:42:58 -07:00
blockcheck.c
ocfs2: Another hamming code optimization.
2009-01-05 08:40:35 -08:00
blockcheck.h
ocfs2: Add the underlying blockcheck code.
2009-01-05 08:40:31 -08:00
buffer_head_io.c
ocfs2: Use BH_JBDPrivateStart instead of BH_Unshadow
2009-01-05 08:40:24 -08:00
buffer_head_io.h
ocfs2: Validate metadata only when it's read from disk.
2009-01-05 08:36:53 -08:00
dcache.c
ocfs2: Remove mount/unmount votes
2008-01-25 14:45:34 -08:00
dcache.h
ocfs2: Remove special casing for inode creation in ocfs2_dentry_attach_lock()
2006-09-24 13:50:45 -07:00
dir.c
ocfs2: Checksum and ECC for directory blocks.
2009-01-05 08:40:34 -08:00
dir.h
ocfs2: Checksum and ECC for directory blocks.
2009-01-05 08:40:34 -08:00
dlmglue.c
ocfs2: Fix ocfs2_read_quota_block() error handling.
2009-01-05 08:40:24 -08:00
dlmglue.h
ocfs2: Implementation of local and global quota file handling
2009-01-05 08:40:23 -08:00
export.c
[PATCH] switch all filesystems over to d_obtain_alias
2008-10-23 05:13:01 -04:00
export.h
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
extent_map.c
ocfs2: Wrap virtual block reads in ocfs2_read_virt_blocks()
2009-01-05 08:36:54 -08:00
extent_map.h
ocfs2: Wrap virtual block reads in ocfs2_read_virt_blocks()
2009-01-05 08:36:54 -08:00
file.c
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
2009-01-05 08:40:32 -08:00
file.h
ocfs2: Implementation of local and global quota file handling
2009-01-05 08:40:23 -08:00
heartbeat.c
ocfs2: Move o2hb functionality into the stack glue.
2008-04-18 08:56:04 -07:00
heartbeat.h
ocfs2: Move o2hb functionality into the stack glue.
2008-04-18 08:56:04 -07:00
inode.c
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
2009-01-05 08:40:32 -08:00
inode.h
ocfs2: Implementation of local and global quota file handling
2009-01-05 08:40:23 -08:00
ioctl.c
ocfs2: Don't check for NULL before brelse()
2008-10-13 17:02:44 -07:00
ioctl.h
ocfs2: Convert ocfs2 over to unlocked_ioctl
2008-04-18 08:56:11 -07:00
journal.c
ocfs2: Checksum and ECC for directory blocks.
2009-01-05 08:40:34 -08:00
journal.h
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
2009-01-05 08:40:32 -08:00
localalloc.c
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
2009-01-05 08:40:32 -08:00
localalloc.h
ocfs2: throttle back local alloc when low on disk space
2008-10-13 13:57:57 -07:00
locks.c
ocfs2: POSIX file locks support
2008-10-13 13:57:57 -07:00
locks.h
ocfs2: POSIX file locks support
2008-10-13 13:57:57 -07:00
Makefile
ocfs2: Add the underlying blockcheck code.
2009-01-05 08:40:31 -08:00
mmap.c
ocfs2: return 0 in page_mkwrite to let VFS retry.
2008-11-10 09:51:47 -08:00
mmap.h
[PATCH] OCFS2: The Second Oracle Cluster Filesystem
2006-01-03 11:45:47 -08:00
namei.c
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
2009-01-05 08:40:32 -08:00
namei.h
ocfs2: Move directory manipulation code into dir.c
2007-10-12 11:54:36 -07:00
ocfs1_fs_compat.h
fs/: Spelling fixes
2008-02-03 17:33:42 +02:00
ocfs2_fs.h
ocfs2: Enable metadata checksums.
2009-01-05 08:40:34 -08:00
ocfs2_lockid.h
ocfs2: Implementation of local and global quota file handling
2009-01-05 08:40:23 -08:00
ocfs2_lockingver.h
ocfs2: Negotiate locking protocol versions.
2008-02-06 16:11:29 -08:00
ocfs2.h
ocfs2: Add directory block trailers.
2009-01-05 08:40:34 -08:00
quota_global.c
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
2009-01-05 08:40:32 -08:00
quota_local.c
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
2009-01-05 08:40:32 -08:00
quota.h
ocfs2: Fix ocfs2_read_quota_block() error handling.
2009-01-05 08:40:24 -08:00
resize.c
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
2009-01-05 08:40:32 -08:00
resize.h
[PATCH 2/2] ocfs2: Implement group add for online resize
2008-01-25 15:04:24 -08:00
slot_map.c
ocfs2: Validate metadata only when it's read from disk.
2009-01-05 08:36:53 -08:00
slot_map.h
ocfs2: De-magic the in-memory slot map.
2008-04-18 08:56:03 -07:00
stack_o2cb.c
ocfs2: Remove ->hangup() from stack glue operations.
2008-06-16 10:46:52 -07:00
stack_user.c
ocfs2: initialize stack_user lvbptr
2008-12-01 14:46:39 -08:00
stackglue.c
ocfs2: Remove pointless !!
2008-10-13 17:02:44 -07:00
stackglue.h
ocfs2: POSIX file locks support
2008-10-13 13:57:57 -07:00
suballoc.c
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
2009-01-05 08:40:32 -08:00
suballoc.h
ocfs2: Validate metadata only when it's read from disk.
2009-01-05 08:36:53 -08:00
super.c
ocfs2: Validate superblock with checksum and ecc.
2009-01-05 08:40:34 -08:00
super.h
ocfs2: use s_maxbytes directly in ocfs2_change_file_space()
2007-08-09 17:25:07 -07:00
symlink.c
ocfs2: Wrap inode block reads in a dedicated function.
2009-01-05 08:36:52 -08:00
symlink.h
[PATCH] mark struct inode_operations const 2
2007-02-12 09:48:46 -08:00
sysfile.c
ocfs2: Silence false lockdep warnings
2008-01-25 15:05:44 -08:00
sysfile.h
[PATCH] OCFS2: The Second Oracle Cluster Filesystem
2006-01-03 11:45:47 -08:00
uptodate.c
ocfs2: use smaller counters in ocfs2_remove_xattr_clusters_from_cache
2008-10-13 17:02:44 -07:00
uptodate.h
ocfs2: Add helper function in uptodate.c for removing xattr clusters
2008-10-13 13:57:59 -07:00
ver.c
ocfs2: bump version number
2008-01-25 15:05:46 -08:00
ver.h
[PATCH] OCFS2: The Second Oracle Cluster Filesystem
2006-01-03 11:45:47 -08:00
xattr.c
ocfs2: Use proper journal_access function in xattr.c
2009-01-05 08:40:34 -08:00
xattr.h
ocfs2: Create ocfs2_xattr_value_buf.
2009-01-05 08:40:32 -08:00