Andreas Rohner 2cc88f3a5f nilfs2: implementation of NILFS_IOCTL_SET_SUINFO ioctl ... With this ioctl the segment usage entries in the SUFILE can be updated from userspace. This is useful, because it allows the userspace GC to modify and update segment usage entries for specific segments, which enables it to avoid unnecessary write operations. If a segment needs to be cleaned, but there is no or very little reclaimable space in it, the cleaning operation basically degrades to a useless moving operation. In the end the only thing that changes is the location of the data and a timestamp in the segment usage information. With this ioctl the GC can skip the cleaning and update the segment usage entries directly instead. This is basically a shortcut to cleaning the segment. It is still necessary to read the segment summary information, but the writing of the live blocks can be skipped if it's not worth it. [konishi.ryusuke@lab.ntt.co.jp: add description of NILFS_IOCTL_SET_SUINFO ioctl] Signed-off-by: Andreas Rohner <andreas.rohner@gmx.net> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-04-03 16:21:25 -07:00
..
caching	FS-Cache: Provide the ability to enable/disable cookies	2013-09-27 18:40:25 +01:00
cifs	cifs: update cifs.txt and remove some outdated infos	2013-09-13 16:29:58 -05:00
configfs	configfs: convert to umode_t	2012-01-03 22:54:57 -05:00
nfs	Documentation/: update 00-INDEX files	2014-02-10 16:01:40 -08:00
pohmelfs	Documentation: Fix multiple typo in Documentation	2012-03-07 16:08:24 +01:00
9p.txt	9p: update documentation	2014-01-24 10:55:21 -06:00
00-INDEX	Documentation/: update 00-INDEX files	2014-02-10 16:01:40 -08:00
adfs.txt	adfs: add hexadecimal filetype suffix option	2011-03-22 17:44:17 -07:00
affs.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
afs.txt
autofs4-mount-control.txt	doc: fix double words	2014-03-21 13:16:58 +01:00
automount-support.txt
befs.txt	Documentation: befs.txt: no maintainer, orphaned	2011-08-13 18:34:03 -07:00
bfs.txt
btrfs.txt	btrfs: Add treelog mount option.	2014-01-28 13:20:20 -08:00
ceph.txt	ceph: enable/disable dentry complete flags via mount option	2012-01-12 11:00:40 -08:00
coda.txt
cramfs.txt
debugfs.txt	debugfs: more tightly restrict default mount mode	2012-08-27 13:42:02 -07:00
devpts.txt
directory-locking	vfs: take i_mutex on renamed file	2013-11-09 00:16:40 -05:00
dlmfs.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
dnotify_test.c
dnotify.txt
ecryptfs.txt
efivarfs.txt	efivarfs: Add documentation for the EFI variable filesystem	2012-10-30 10:39:18 +00:00
exofs.txt	exofs: Add option to mount by osdname	2011-03-15 15:02:51 +02:00
ext2.txt
ext3.txt	ext3: allow specifying external journal by pathname mount option	2013-07-31 22:11:15 +02:00
ext4.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-09-06 09:36:28 -07:00
f2fs.txt	f2fs: update documents and a MAINTAINERS entry	2014-01-09 21:00:06 +09:00
fiemap.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
files.txt	Wrap accesses to the fd_sets in struct fdtable	2012-02-19 10:30:52 -08:00
fuse.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
gfs2-glocks.txt	GFS2: Update glock doc to add new stats info	2012-05-10 12:41:40 +01:00
gfs2-uevents.txt	Documentation: Fix multiple typo in Documentation	2012-03-07 16:08:24 +01:00
gfs2.txt	GFS2: Update main gfs2 doc	2012-05-10 11:45:31 +01:00
hfs.txt	Documentation: HFS is orphaned	2011-11-04 12:01:48 -07:00
hfsplus.txt	Documentation: update URL to hfsplus Technote 1150	2014-02-20 14:48:51 +01:00
hpfs.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
inotify.txt	Documentation: fix inotify source file paths	2011-11-04 12:01:47 -07:00
isofs.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
jfs.txt	doc: fix misspellings with 'codespell' tool	2013-05-28 12:02:12 +02:00
Locking	doc: Fix typo (acces_process_vm -> access_process_vm)	2013-12-19 15:12:21 +01:00
locks.txt	doc: fix broken references	2011-09-27 18:08:04 +02:00
logfs.txt	fix "seperate" typos in comments	2010-05-10 11:56:30 +02:00
Makefile
mandatory-locking.txt
ncpfs.txt
nilfs2.txt	nilfs2: implementation of NILFS_IOCTL_SET_SUINFO ioctl	2014-04-03 16:21:25 -07:00
ntfs.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
ocfs2.txt	ocfs2: clean up mount option about atime in ocfs2.txt	2011-05-23 23:37:12 -07:00
omfs.txt
path-lookup.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
porting	mm + fs: store shadow entries in page cache	2014-04-03 16:21:01 -07:00
proc.txt	mm, oom: base root bonus on current usage	2014-01-30 16:56:56 -08:00
qnx6.txt	doc: filesystems : Fix typo in Documentations/filesystems	2013-08-20 13:45:56 +02:00
quota.txt
ramfs-rootfs-initramfs.txt	initmpfs: use initramfs if rootfstype= or root= specified	2013-09-11 15:59:38 -07:00
relay.txt	doc: Fix typo in doucmentations	2013-07-25 12:34:15 +02:00
romfs.txt	Documentation/filesystems/romfs.txt: fixing link to genromfs	2011-02-17 22:04:46 +01:00
seq_file.txt
sharedsubtree.txt	Documentation: Fix trivial typo in filesystems/sharedsubtree.txt	2010-10-25 21:18:21 -04:00
spufs.txt
squashfs.txt	Squashfs: Update documentation to include xattrs	2011-12-30 01:20:24 +00:00
sysfs-pci.txt	PCI: Allow read/write access to sysfs I/O port resources	2010-07-30 09:32:08 -07:00
sysfs-tagging.txt	doc: Fix typo in doucmentations	2013-07-25 12:34:15 +02:00
sysfs.txt	Documentation/filesystems/sysfs.txt: fix device_attribute declaration	2014-01-23 16:37:00 -08:00
sysv-fs.txt
tmpfs.txt	mempolicy: document cpuset interaction with tmpfs mpol mount option	2010-05-25 08:06:57 -07:00
ubifs.txt	UBIFS: switch self-check knobs to debugfs	2011-07-04 10:54:28 +03:00
udf.txt
ufs.txt
vfat.txt	Documentation/filesystems/vfat.txt: fix directory entry example	2013-11-13 12:09:32 +09:00
vfs.txt	Documentation/filesystems/vfs.txt: update file_operations documentation	2014-01-30 16:56:56 -08:00
xfs-delayed-logging-design.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs-self-describing-metadata.txt	xfs: add metadata CRC documentation	2013-04-27 13:27:43 -05:00
xfs.txt	doc: filesystems : Fix typo in Documentations/filesystems	2013-08-20 13:45:56 +02:00
xip.txt