Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Tristan Ye c1631d4a48 Ocfs2: Optimize punching-hole code. ... This patch simplifies the logic of handling existing holes and skipping extent blocks and removes some confusing comments. The patch survived the fill_verify_holes testcase in ocfs2-test. It also passed my manual sanity check and stress tests with enormous extent records. Currently punching a hole on a file with 3+ extent tree depth was really a performance disaster. It can even take several hours, though we may not hit this in real life with such a huge extent number. One simple way to improve the performance is quite straightforward. From the logic of truncate, we can punch the hole from hole_end to hole_start, which reduces the overhead of btree operations in a significant way, such as tree rotation and moving. Following is the testing result when punching hole from 0 to file end in bytes, on a 1G file, 1G file consists of 256k extent records, each record cover 4k data(just one cluster, clustersize is 4k): =========================================================================== * Original punching-hole mechanism: =========================================================================== I waited 1 hour for its completion, unfortunately it's still ongoing. =========================================================================== * Patched punching-hode mechanism: =========================================================================== real 0m2.518s user 0m0.000s sys 0m2.445s That means we've gained up to 1000 times improvement on performance in this case, whee! It's fairly cool. and it looks like that performance gain will be raising when extent records grow. The patch was based on my former 2 patches, which were about truncating codes optimization and fixup to handle CoW on punching hole. Signed-off-by: Tristan Ye <tristan.ye@oracle.com> Acked-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>		2010-05-18 12:31:05 -07:00
..
9p	9p: Skip check for mandatory locks when unlocking	2010-03-13 09:05:37 -06:00
adfs	pass writeback_control to ->write_inode	2010-03-05 13:25:52 -05:00
affs	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
afs	make sure data is on disk before calling ->write_inode	2010-03-05 13:25:10 -05:00
autofs
autofs4	Use kill_litter_super() in autofs4 ->kill_sb()	2010-03-03 14:07:54 -05:00
befs	befs: fix leak	2010-02-07 03:06:21 -05:00
bfs	pass writeback_control to ->write_inode	2010-03-05 13:25:52 -05:00
btrfs	Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable	2010-03-08 14:07:53 -08:00
cachefiles	CacheFiles: Fix a race in cachefiles_delete_object() vs rename	2010-02-20 10:06:35 -05:00
cifs	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
coda
configfs	Fix configfs leak	2010-01-14 09:05:42 -05:00
cramfs
debugfs	Lose the new_name argument of fsnotify_move()	2010-02-08 14:38:36 -05:00
devpts
dlm	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-03-12 16:04:50 -08:00
ecryptfs	ecryptfs: use after free	2010-01-19 22:36:06 -06:00
efs
exofs	pass writeback_control to ->write_inode	2010-03-05 13:25:52 -05:00
exportfs
ext2	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6	2010-03-05 13:20:53 -08:00
ext3	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
ext4	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-03-12 16:04:50 -08:00
fat	Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6	2010-03-12 16:35:21 -08:00
freevxfs
fscache	FS-Cache: Remove the EXPERIMENTAL flag	2010-03-08 07:32:34 -08:00
fuse	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
gfs2	Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes	2010-03-13 14:38:53 -08:00
hfs	pass writeback_control to ->write_inode	2010-03-05 13:25:52 -05:00
hfsplus	pass writeback_control to ->write_inode	2010-03-05 13:25:52 -05:00
hostfs
hpfs	Don't mess with generic_permission() under ->d_lock in hpfs	2010-03-03 14:07:58 -05:00
hppfs	hppfs can use existing proc_mnt, no need for do_kern_mount() in there	2010-03-03 14:08:00 -05:00
hugetlbfs
isofs
jbd	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
jbd2	jbd2: clean up an assertion in jbd2_journal_commit_transaction()	2010-02-24 12:11:20 -05:00
jffs2
jfs	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6	2010-03-05 13:20:53 -08:00
lockd	lockd: don't clear sm_monitored on nsm_reboot_lookup	2010-02-08 16:20:35 -05:00
logfs	Merge git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs	2010-03-06 13:18:03 -08:00
minix	pass writeback_control to ->write_inode	2010-03-05 13:25:52 -05:00
ncpfs
nfs	Merge branch 'for-2.6.34' of git://linux-nfs.org/~bfields/linux	2010-03-06 11:31:38 -08:00
nfs_common
nfsd	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
nilfs2	nilfs2: remove whitespaces before quoted newlines	2010-03-14 10:29:51 +09:00
nls
notify	switch inotify_user to anon_inode	2010-02-19 03:35:12 -05:00
ntfs	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
ocfs2	Ocfs2: Optimize punching-hole code.	2010-05-18 12:31:05 -07:00
omfs	pass writeback_control to ->write_inode	2010-03-05 13:25:52 -05:00
openpromfs
partitions	block: Stop using byte offsets	2010-01-11 14:30:09 +01:00
proc	proc: warn on non-existing proc entries	2010-03-06 11:26:45 -08:00
qnx4	fs/qnx4: decrement sizeof size in strncmp	2010-02-04 11:55:46 +01:00
quota	quota: stop using QUOTA_OK / NO_QUOTA	2010-03-05 00:20:31 +01:00
ramfs	nommu: fix shared mmap after truncate shrinkage problems	2010-01-16 12:15:40 -08:00
reiserfs	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
romfs	fix leak in romfs_fill_super()	2010-01-26 22:22:26 -05:00
smbfs
squashfs	Squashfs: get rid of obsolete definition in header file	2010-03-05 15:35:35 +00:00
sysfs	sysfs: Kill unused sysfs_sb variable.	2010-03-07 17:04:52 -08:00
sysv	pass writeback_control to ->write_inode	2010-03-05 13:25:52 -05:00
ubifs	Revert "lib: build list_sort() only if needed"	2010-03-07 09:54:44 -08:00
udf	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6	2010-03-12 16:22:50 -08:00
ufs	ufs: make solaris fsck happy	2010-03-12 15:52:35 -08:00
xfs	Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs	2010-03-06 11:32:21 -08:00
aio.c
anon_inodes.c	anon_inodes: mark the anon inode private	2010-03-12 16:25:23 -08:00
attr.c	fs: use rlimit helpers	2010-03-06 11:26:29 -08:00
bad_inode.c
binfmt_aout.c	coredump: move dump_write() and dump_seek() into a header file	2010-03-06 11:26:45 -08:00
binfmt_elf.c	coredump: pass mm->flags as a coredump parameter for consistency	2010-03-06 11:26:46 -08:00
binfmt_elf_fdpic.c	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
binfmt_em86.c
binfmt_flat.c	fs: use rlimit helpers	2010-03-06 11:26:29 -08:00
binfmt_misc.c
binfmt_script.c
binfmt_som.c	Split 'flush_old_exec' into two functions	2010-01-29 08:22:01 -08:00
bio-integrity.c	block: fix bugs in bio-integrity mempool usage	2010-01-30 20:28:19 +01:00
bio.c	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
block_dev.c	freeze_bdev: don't deactivate successfully frozen MS_RDONLY sb	2010-02-07 03:06:21 -05:00
buffer.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-03-12 16:04:50 -08:00
char_dev.c
compat.c	Add generic sys_old_select()	2010-03-12 15:52:32 -08:00
compat_binfmt_elf.c	elf coredump: replace ELF_CORE_EXTRA_* macros by functions	2010-03-06 11:26:45 -08:00
compat_ioctl.c	fs/compat_ioctl.c: suppress two warnings	2010-03-06 11:26:35 -08:00
dcache.c	fix race in d_splice_alias()	2010-03-03 14:13:08 -05:00
dcookies.c
direct-io.c
drop_caches.c
eventfd.c	eventfd - allow atomic read and waitqueue remove	2010-01-25 12:26:38 -02:00
eventpoll.c	anonfd: Allow making anon files read-only	2009-12-22 12:27:34 -05:00
exec.c	coredump: suppress uid comparison test if core output files are pipes	2010-03-06 11:26:46 -08:00
fcntl.c	fs: use rlimit helpers	2010-03-06 11:26:29 -08:00
fifo.c
file.c	fs: use rlimit helpers	2010-03-06 11:26:29 -08:00
file_table.c	vfs: take f_lock on modifying f_mode after open time	2010-03-06 11:26:25 -08:00
filesystems.c
fs-writeback.c	pass writeback_control to ->write_inode	2010-03-05 13:25:52 -05:00
fs_struct.c
generic_acl.c
inode.c	dquot: move dquot initialization responsibility into the filesystem	2010-03-05 00:20:30 +01:00
internal.h	Take vfsmount_lock to fs/internal.h	2010-03-03 14:07:59 -05:00
ioctl.c
ioprio.c
Kconfig	Revert "task_struct: make journal_info conditional"	2009-12-17 13:23:24 -08:00
Kconfig.binfmt
libfs.c	libfs: Unexport and kill simple_prepare_write	2010-03-03 13:00:17 -05:00
locks.c	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
Makefile
mbcache.c
mpage.c	Fix misspellings of "invocation" in comments.	2010-02-04 11:55:45 +01:00
namei.c	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
namespace.c	vfs: add NOFOLLOW flag to umount(2)	2010-03-03 14:08:00 -05:00
nfsctl.c	Switch may_open() and break_lease() to passing O_...	2010-03-03 13:00:21 -05:00
no-block.c
open.c	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6	2010-03-05 13:20:53 -08:00
pipe.c
pnode.c	Kill CL_PROPAGATION, sanitize fs/pnode.c:get_source()	2010-03-03 13:00:22 -05:00
pnode.h	VFS: Clean up shared mount flag propagation	2010-03-03 14:07:55 -05:00
posix_acl.c
read_write.c
read_write.h
readdir.c
select.c	Add generic sys_old_select()	2010-03-12 15:52:32 -08:00
seq_file.c	seq_file: fix new kernel-doc warnings	2010-03-07 15:48:26 -08:00
signalfd.c	anonfd: Allow making anon files read-only	2009-12-22 12:27:34 -05:00
splice.c
stack.c
stat.c	Add unlocked version of inode_add_bytes() function	2009-12-23 13:33:54 +01:00
super.c	Mirror MS_KERNMOUNT in ->mnt_flags	2010-03-03 14:08:00 -05:00
sync.c	quota: move code from sync_quota_sb into vfs_quota_sync	2010-03-05 00:20:24 +01:00
timerfd.c	anonfd: Allow making anon files read-only	2009-12-22 12:27:34 -05:00
utimes.c
xattr.c
xattr_acl.c