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
FS-Cache: Provide the ability to enable/disable cookies
2013-09-27 18:40:25 +01:00
cifs: update cifs.txt and remove some outdated infos
2013-09-13 16:29:58 -05:00
configfs: convert to umode_t
2012-01-03 22:54:57 -05:00
Documentation/: update 00-INDEX files
2014-02-10 16:01:40 -08:00
Documentation: Fix multiple typo in Documentation
2012-03-07 16:08:24 +01:00
Documentation/: update 00-INDEX files
2014-02-10 16:01:40 -08:00
9p: update documentation
2014-01-24 10:55:21 -06:00
adfs: add hexadecimal filetype suffix option
2011-03-22 17:44:17 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
doc: fix double words
2014-03-21 13:16:58 +01:00
Documentation: befs.txt: no maintainer, orphaned
2011-08-13 18:34:03 -07:00
btrfs: Add treelog mount option.
2014-01-28 13:20:20 -08:00
ceph: enable/disable dentry complete flags via mount option
2012-01-12 11:00:40 -08:00
debugfs: more tightly restrict default mount mode
2012-08-27 13:42:02 -07:00
vfs: take i_mutex on renamed file
2013-11-09 00:16:40 -05:00
efivarfs: Add documentation for the EFI variable filesystem
2012-10-30 10:39:18 +00:00
exofs: Add option to mount by osdname
2011-03-15 15:02:51 +02:00
ext3: allow specifying external journal by pathname mount option
2013-07-31 22:11:15 +02:00
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: update documents and a MAINTAINERS entry
2014-01-09 21:00:06 +09:00
Wrap accesses to the fd_sets in struct fdtable
2012-02-19 10:30:52 -08:00
GFS2: Update glock doc to add new stats info
2012-05-10 12:41:40 +01:00
Documentation: Fix multiple typo in Documentation
2012-03-07 16:08:24 +01:00
GFS2: Update main gfs2 doc
2012-05-10 11:45:31 +01:00
Documentation: HFS is orphaned
2011-11-04 12:01:48 -07:00
Documentation: update URL to hfsplus Technote 1150
2014-02-20 14:48:51 +01:00
Documentation: fix inotify source file paths
2011-11-04 12:01:47 -07:00
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
doc: fix misspellings with 'codespell' tool
2013-05-28 12:02:12 +02:00
doc: Fix typo (acces_process_vm -> access_process_vm)
2013-12-19 15:12:21 +01:00
doc: fix broken references
2011-09-27 18:08:04 +02:00
nilfs2: implementation of NILFS_IOCTL_SET_SUINFO ioctl
2014-04-03 16:21:25 -07:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
ocfs2: clean up mount option about atime in ocfs2.txt
2011-05-23 23:37:12 -07:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
mm + fs: store shadow entries in page cache
2014-04-03 16:21:01 -07:00
mm, oom: base root bonus on current usage
2014-01-30 16:56:56 -08:00
doc: filesystems : Fix typo in Documentations/filesystems
2013-08-20 13:45:56 +02:00
initmpfs: use initramfs if rootfstype= or root= specified
2013-09-11 15:59:38 -07:00
doc: Fix typo in doucmentations
2013-07-25 12:34:15 +02:00
Documentation/filesystems/romfs.txt: fixing link to genromfs
2011-02-17 22:04:46 +01:00
Documentation: Fix trivial typo in filesystems/sharedsubtree.txt
2010-10-25 21:18:21 -04:00
Squashfs: Update documentation to include xattrs
2011-12-30 01:20:24 +00:00
doc: Fix typo in doucmentations
2013-07-25 12:34:15 +02:00
Documentation/filesystems/sysfs.txt: fix device_attribute declaration
2014-01-23 16:37:00 -08:00
UBIFS: switch self-check knobs to debugfs
2011-07-04 10:54:28 +03:00
Documentation/filesystems/vfat.txt: fix directory entry example
2013-11-13 12:09:32 +09:00
Documentation/filesystems/vfs.txt: update file_operations documentation
2014-01-30 16:56:56 -08:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
xfs: add metadata CRC documentation
2013-04-27 13:27:43 -05:00
doc: filesystems : Fix typo in Documentations/filesystems
2013-08-20 13:45:56 +02:00
2cc88f3a5f