From: Vasily Tarasov <vtaras@openvz.org> Adds hooks to CFQ code to form proper data structures interconnection. Signed-off-by: Vasily Tarasov <vtaras@openvz.org> --- --- linux-2.6.25-rc5-mm1/include/linux/cfqio-cgroup.h.creat-elim 2008-02-15 01:07:29.000000000 -0500 +++ linux-2.6.25-rc5-mm1/include/linux/cfqio-cgroup.h 2008-02-15 01:08:25.000000000 -0500 @@ -36,6 +36,12 @@ struct cfqio_ss_css { extern struct cfqio_cgroup_data * cfqio_cgrp_findcreate(struct cfqio_ss_css *, struc...

From: Vasily Tarasov <vtaras@openvz.org> Adds the description to the Kconfig file. Signed-off-by: Vasily Tarasov <vtaras@openvz.org> --- --- linux-2.6.25-rc5-mm1/init/Kconfig.kconfig 2008-02-15 01:01:40.000000000 -0500 +++ linux-2.6.25-rc5-mm1/init/Kconfig 2008-02-15 01:13:12.000000000 -0500 @@ -316,6 +316,13 @@ config GROUP_SCHED This feature lets CPU scheduler recognize task groups and control CPU bandwidth allocation to such task groups. +config CGROUP_CFQIO + boo...

From: Vasily Tarasov <vtaras@openvz.org> Extends the original CFQ data sructures and adds the major cfqio_subsys data structure: cfqio_cgroup_data. Adds several helper functions, which will be called later from CFQ code to form proper data structures interconnection. Signed-off-by: Vasily Tarasov <vtaras@openvz.org> --- --- linux-2.6.25-rc5-mm1/include/linux/cfqio-cgroup.h.mainstruct 2008-02-15 01:06:40.000000000 -0500 +++ linux-2.6.25-rc5-mm1/include/linux/cfqio-cgroup.h 2008-0...

From: Vasily Tarasov <vtaras@openvz.org> Introduces cgroups scheduling. Each time when I/O request is placed on per-process request queue and there were no other requests from this cgroup, this cgroup is added to the end of active cgroups list. This list is service in round-robin fashion. Switching between cgroups happens eiher when cgroup expires its time slice, either if there are no more requests from it. Each time I/O request is completed, we check if it was the last request from cgroup,...

From: Vasily Tarasov <vtaras@openvz.org> The following patchset introduces I/O bandwidth controlling subsystem for the CGroups framework based on the CFQ scheduler. User can assign a priority from 0 to 7 to a cgroup, and I/O bandwidth will be adjusted proportionally. This effect is achieved by introducing a certain modifications to CFQ. Now there is not only per process time slice, but also per cgroup time slice. During cgroup's time slice only processes from current cgroup can add requests ...

Per chance is 2.6.25-rc2 missing in action? I see the announcement from about 3 and a half hours ago, but the latest patch that I see is rc1-git4. I even took the unheard of action of hitting refresh on my browser. No joy --

I've done some work on cleaning up the definitions of pci_device_id to make them "static const" (where possible) and to make sure they go into __devinitconst. There are about 350 changes of the type shown in the diff at the end of this mail. =EF=BB=BFAll these changes are in my public GIT tree at: git://www.southpole.se/~jonas/git/linux.git (Based on 2.6.25-rc2) In addition to these pci_device_id changes, there are a few changesets that move "const" data from __devinitdata to __devinitconst...

This is against current Linus git. Miklos, if you send me a copy of your current unprivledged mount code merged against mainline, I'll merge with this. git://git.kernel.org/pub/scm/linux/kernel/git/daveh/linux-2.6-robind.git This rolls up all the -mm bugfixes that were accumulated, and addresses some new review comments from Al. Also contains some reworking from hch and a patch from Jeff Dike. Just posting here to let everyone have a sniff before we resend it back to -mm. --- Why do w...

Originally from: Herbert Poetzl <herbert@13thfloor.at> This is the core of the read-only bind mount patch set. Note that this does _not_ add a "ro" option directly to the bind mount operation. If you require such a mount, you must first do the bind, then follow it up with a 'mount -o remount,ro' operation: If you wish to have a r/o bind mount of /foo on bar: mount --bind /foo /bar mount -o remount,ro /bar Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christop...

This takes care of all of the direct callers of vfs_mknod(). Since a few of these cases also handle normal file creation as well, this also covers some calls to vfs_create(). So that we don't have to make three mnt_want/drop_write() calls inside of the switch statement, we move some of its logic outside of the switch and into a helper function suggested by Christoph. This also encapsulates a fix for mknod(S_IFREG) that Miklos found. Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-...

chown/chmod,etc... don't call permission in the same way that the normal "open for write" calls do. They still write to the filesystem, so bump the write count during these operations. Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- linux-2.6.git-dave/fs/open.c | 39 ++++++++++++++++++++++++++++++--------- 1 file c...

Elevate the write count during the xfs m/ctime updates. XFS has to do it's own timestamp updates due to an unfortunate VFS design limitation, so it will have to track writers by itself aswell. [hch: split out from the touch_atime patch as it's not related to it at all] Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> --- linux-2.6.git-dave/fs/xfs/linux-2.6/xfs_iops.c | 7 -...

This also uses the little helper in the NFS code to make an if() a little bit less ugly. We introduced the helper at the beginning of the series. Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- linux-2.6.git-dave/fs/namei.c | 4 ++++ linux-2.6.git-dave/fs/nfsd/vfs.c | 17 +++++++++++++---- 2 files changed, 17 ...

Some ioctl()s can cause writes to the filesystem. Take these, and make them use mnt_want/drop_write() instead. Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- linux-2.6.git-dave/fs/ext2/ioctl.c | 49 +++++++---- linux-2.6.git-dave/fs/ext3/ioctl.c | 103 +++++++++++++++--------- linux-2.6.g...

Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> --- linux-2.6.git-dave/fs/inode.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff -puN fs/inode.c~r-o-bind-mounts-elevate-write-count-for-file_update_time fs/inode.c --- linux-2.6.git/fs/inode.c~r-o-bind-mounts-elevate-write-count-for-file_update_time 2008-02-15 13:25:51.000000000 -0800 +++ linux-2.6.git-dave/fs/inode...

Now includes fix for oops seen by akpm. "never let a libc developer write your kernel code" - hch "nor, apparently, a kernel developer" - akpm Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> --- linux-2.6.git-dave/fs/utimes.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+),...

Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> --- linux-2.6.git-dave/fs/ncpfs/ioctl.c | 54 +++++++++++++++++++++++++++++++++++- 1 file changed, 53 insertions(+), 1 deletion(-) diff -puN fs/ncpfs/ioctl.c~r-o-bind-mounts-elevate-write-count-during-entire-ncp_ioctl fs/ncpfs/ioctl.c --- linux-2.6.git/fs/ncpfs/ioctl.c~r-o...

Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> --- linux-2.6.git-dave/fs/namei.c | 4 ++++ linux-2.6.git-dave/ipc/mqueue.c | 5 ++++- 2 files changed, 8 insertions(+), 1 deletion(-) diff -puN fs/namei.c~r-o-bind-mounts-elevate-mnt-writers-for-vfs_unlink-callers fs/namei.c --- linux-2.6.git/fs/namei.c~r-o-bind-mounts-elevate-mnt-writers-for-vfs_unlink-callers 2008-02-15 13:25...

Elevate the write count during the vfs_rmdir() call. Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- linux-2.6.git-dave/fs/namei.c | 5 +++++ 1 file changed, 5 insertions(+) diff -puN fs/namei.c~r-o-bind-mounts-do_rmdir-elevate-write-count fs/namei.c --- linux-2.6.g...

My end goal here is to make sure all users of may_open() return filps. This will ensure that we properly release mount write counts which were taken for the filp in may_open(). This patch moves the sys_open flags to namei flags calculation into fs/namei.c. We'll shortly be moving the nameidata_to_filp() calls into namei.c, and this gets the sys_open flags to a place where we can get at them when we need them. Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwi...

This patch adds two function mnt_want_write() and mnt_drop_write(). These are used like a lock pair around and fs operations that might cause a write to the filesystem. Before these can become useful, we must first cover each place in the VFS where writes are performed with a want/drop pair. When that is complete, we can actually introduce code that will safely check the counts before allowing r/w<->r/o transitions to occur. Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Al ...

After several posts and bug reports regarding interaction with the NULL nameidata, here's a patch to clean up the mess with struct file in the reiserfs xattr code. As observed in several of the posts, there's really no need for struct file to exist in the xattr code. It was really only passed around due to the f_op->readdir() and a_ops->{prepare,commit}_write prototypes requiring it. reiserfs_prepare_write() and reiserfs_commit_write() don't actually use the struct file passed to it, and...

Here's patch for hppfs that uses vfs_kern_mount to make sure it always has a procfs instance and passed the vfsmount on through the inode private data. Also fixes a procfs file_system_type leak for every attempted hppfs mount. [ jdike - gave this file a style workover, plus deleted hppfs_dentry_ops ] Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Dave Hansen <have...

This patch adds a hw-handler interface for request-based dm-multipath. Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> --- drivers/md/dm-hw-handler.h | 1 + 1 files changed, 1 insertion(+) Index: 2.6.25-rc1/drivers/md/dm-hw-handler.h =================================================================== --- 2.6.25-rc1.orig/drivers/md/dm-hw-handler.h +++ 2.6.25-rc1/drivers/md/dm-hw-handler.h @@ -35,6 +35,7 @@ struct hw_hand...

This patch enables request-based dm. Request-based dm and bio-based dm coexist. There are some limitations between them. - OK: bio-based dm device on bio-based dm device - OK: bio-based dm device on request-based dm device - OK: request-based dm device on request-based dm device - NG: request-based dm device on bio-based dm device The type of a dm device is decided at the first table loading time. Until then, mempool creations and queue initializations are deferred. Once the type of a d...