Dan Williams 2424b5dd06 sysfs: refill attribute buffer when reading from offset 0 ... Requiring userspace to close and re-open sysfs attributes has been the policy since before 2.6.12. It allows userspace to get a consistent snapshot of kernel state and consume it with incremental reads and seeks. Now, if the file position is zero the kernel assumes userspace wants to see the new value. The application for this change is to allow a userspace RAID metadata handler to check the state of an array without causing any memory allocations. Thus not causing writeback to a raid array that might be blocked waiting for userspace to take action. Cc: Neil Brown <neilb@suse.de> Acked-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2008-04-19 19:10:29 -07:00
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configfs	correct missing a double quote in configfs.txt	2008-02-03 16:10:08 +02:00
9p.txt	9p: add virtio transport	2007-10-23 13:47:31 -05:00
00-INDEX	Documentation: move rpc-cache.txt to filesystems/	2008-04-11 13:20:52 -06:00
adfs.txt	Fix typos in /Documentation : 'U-Z'	2006-11-30 04:58:40 +01:00
affs.txt	[PATCH] kernel Doc/ URL corrections	2005-11-22 09:14:30 -08:00
afs.txt	[AFS]: Update the AFS fs documentation.	2007-04-26 15:57:43 -07:00
automount-support.txt	VFS: Unexport do_kern_mount() and clean up simple_pin_fs()	2006-06-09 09:34:16 -04:00
befs.txt	Fix typos in Documentation/: 'Q'-'R'	2006-10-03 22:54:15 +02:00
bfs.txt	[PATCH] update Tigran's email addresses	2006-12-13 09:05:53 -08:00
cifs.txt
coda.txt
cramfs.txt
dentry-locking.txt
directory-locking	Documentation: Fix up docs still talking about i_sem	2007-05-24 10:16:17 -07:00
dlmfs.txt	Fix typos in Documentation/: 'D'-'E'	2006-10-03 22:47:42 +02:00
dnotify.txt	Documentation: move dnotify.txt to filesystems/	2008-02-07 08:42:17 -08:00
ecryptfs.txt	eCryptfs: Move ecryptfs docs into Documentation/filesystems/	2007-07-17 10:23:08 -07:00
Exporting	exportfs: update documentation	2007-10-22 08:13:21 -07:00
ext2.txt	Fix typos in Documentation/: 'N'-'P'	2006-10-03 22:52:05 +02:00
ext3.txt	documentation/ext3: grammar fixes	2007-10-20 02:38:36 +02:00
ext4.txt	ext4: Add multi block allocator for ext4	2008-01-29 00:19:52 -05:00
files.txt	Documentation/filesystems/files.txt: remove rcuref_inc_lf() reverences	2007-10-20 01:47:49 +02:00
fuse.txt	[PATCH] fuse: fix typo	2006-12-30 10:56:45 -08:00
gfs2.txt	[GFS2] Update documentation	2006-04-25 15:44:04 -04:00
hfs.txt
hfsplus.txt	Documentation: document HFSPlus	2007-07-31 15:39:38 -07:00
hpfs.txt	misc doc and kconfig typos	2007-05-09 08:58:15 +02:00
inotify.txt	[PATCH] inotify (5/5): update kernel documentation	2006-06-20 05:25:19 -04:00
isofs.txt	isofs: implement dmode option	2008-02-08 09:22:38 -08:00
jfs.txt	JFS: document uid, gid, and umask mount options in jfs.txt	2007-03-09 10:27:31 -06:00
Locking	iget: remove iget() and the read_inode() super op as being obsolete	2008-02-07 08:42:29 -08:00
locks.txt	Documentation: move locks.txt in filesystems/	2007-10-09 18:32:45 -04:00
mandatory-locking.txt	locks: add warning about mandatory locking races	2007-10-09 18:32:45 -04:00
ncpfs.txt
nfsroot.txt	Documentation: move nfsroot.txt to filesystems/	2008-04-11 13:18:01 -06:00
ntfs.txt	NTFS: Fix a mount time deadlock.	2007-10-12 09:16:30 -07:00
ocfs2.txt	[PATCH 2/2] ocfs2: cluster aware flock()	2008-01-25 15:05:43 -08:00
porting	iget: remove iget() and the read_inode() super op as being obsolete	2008-02-07 08:42:29 -08:00
proc.txt	laptops: move laptop-mode.txt to Documentation/laptops/	2008-03-12 02:37:21 -04:00
quota.txt	quota: send messages via netlink	2007-10-17 08:42:56 -07:00
ramfs-rootfs-initramfs.txt	Documentation: fix type error	2008-02-03 14:50:11 +02:00
relay.txt	doc: use correct debugfs mountpoint	2008-02-03 16:30:51 +02:00
romfs.txt
rpc-cache.txt	Documentation: move rpc-cache.txt to filesystems/	2008-04-11 13:20:52 -06:00
seq_file.txt	Fix typos in Documentation/filesystems/seq_file.txt	2008-04-15 19:35:40 -07:00
sharedsubtree.txt	Documentation: move sharedsubtrees.txt to filesystems/	2008-02-07 08:42:17 -08:00
smbfs.txt
spufs.txt	Fix typos in /Documentation : 'U-Z'	2006-11-30 04:58:40 +01:00
sysfs-pci.txt	Fix typos concerning hierarchy	2007-02-17 19:23:03 +01:00
sysfs.txt	sysfs: refill attribute buffer when reading from offset 0	2008-04-19 19:10:29 -07:00
sysv-fs.txt	[PATCH] fs/sysv/: doc cleanup	2006-12-07 08:39:44 -08:00
tmpfs.txt	mount -t tmpfs -o mpol=: check nodes online	2007-06-08 17:23:32 -07:00
udf.txt	[PATCH] Update udf documentation to reflect current state of read/write support	2006-11-16 11:43:38 -08:00
ufs.txt	[PATCH] ufs2 write: mount as rw	2007-02-12 09:48:40 -08:00
vfat.txt	fat: don't use free_clusters for fat32	2007-05-08 11:15:13 -07:00
vfs.txt	mount options: add documentation	2008-02-08 09:22:39 -08:00
xfs.txt	[XFS] Update XFS documentation for noikeep/ikeep.	2008-04-18 12:18:42 +10:00
xip.txt	misc doc and kconfig typos	2007-05-09 08:58:15 +02:00