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2006-06-23[PATCH] VFS: Permit filesystem to perform statfs with a known root dentryDavid Howells
Give the statfs superblock operation a dentry pointer rather than a superblock pointer. This complements the get_sb() patch. That reduced the significance of sb->s_root, allowing NFS to place a fake root there. However, NFS does require a dentry to use as a target for the statfs operation. This permits the root in the vfsmount to be used instead. linux/mount.h has been added where necessary to make allyesconfig build successfully. Interest has also been expressed for use with the FUSE and XFS filesystems. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Nathan Scott <nathans@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23[PATCH] VFS: Permit filesystem to override root dentry on mountDavid Howells
Extend the get_sb() filesystem operation to take an extra argument that permits the VFS to pass in the target vfsmount that defines the mountpoint. The filesystem is then required to manually set the superblock and root dentry pointers. For most filesystems, this should be done with simple_set_mnt() which will set the superblock pointer and then set the root dentry to the superblock's s_root (as per the old default behaviour). The get_sb() op now returns an integer as there's now no need to return the superblock pointer. This patch permits a superblock to be implicitly shared amongst several mount points, such as can be done with NFS to avoid potential inode aliasing. In such a case, simple_set_mnt() would not be called, and instead the mnt_root and mnt_sb would be set directly. The patch also makes the following changes: (*) the get_sb_*() convenience functions in the core kernel now take a vfsmount pointer argument and return an integer, so most filesystems have to change very little. (*) If one of the convenience function is not used, then get_sb() should normally call simple_set_mnt() to instantiate the vfsmount. This will always return 0, and so can be tail-called from get_sb(). (*) generic_shutdown_super() now calls shrink_dcache_sb() to clean up the dcache upon superblock destruction rather than shrink_dcache_anon(). This is required because the superblock may now have multiple trees that aren't actually bound to s_root, but that still need to be cleaned up. The currently called functions assume that the whole tree is rooted at s_root, and that anonymous dentries are not the roots of trees which results in dentries being left unculled. However, with the way NFS superblock sharing are currently set to be implemented, these assumptions are violated: the root of the filesystem is simply a dummy dentry and inode (the real inode for '/' may well be inaccessible), and all the vfsmounts are rooted on anonymous[*] dentries with child trees. [*] Anonymous until discovered from another tree. (*) The documentation has been adjusted, including the additional bit of changing ext2_* into foo_* in the documentation. [akpm@osdl.org: convert ipath_fs, do other stuff] Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Nathan Scott <nathans@sgi.com> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-20[PATCH] inotify (5/5): update kernel documentationAmy Griffis
Update kernel documentation to include a description of the inotify kernel API. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Acked-by: Robert Love <rml@novell.com> Acked-by: John McCutchan <john@johnmccutchan.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-04-26[doc] add paragraph about 'fs' subsystem to sysfs.txtMiklos Szeredi
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
2006-04-11[PATCH] vfs: add splice_write and splice_read to documentationPekka J Enberg
This patch adds the new splice_write and splice_read file operations to Documentation/filesystems/vfs.txt. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Jens Axboe <axboe@suse.de>
2006-03-28[PATCH] Docs update: missing files and descriptions for filesystems/00-INDEXJesper Juhl
Add missing files and descriptions to Documentation/filesystems/00-INDEX Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (21 commits) BUG_ON() Conversion in drivers/video/ BUG_ON() Conversion in drivers/parisc/ BUG_ON() Conversion in drivers/block/ BUG_ON() Conversion in sound/sparc/cs4231.c BUG_ON() Conversion in drivers/s390/block/dasd.c BUG_ON() Conversion in lib/swiotlb.c BUG_ON() Conversion in kernel/cpu.c BUG_ON() Conversion in ipc/msg.c BUG_ON() Conversion in block/elevator.c BUG_ON() Conversion in fs/coda/ BUG_ON() Conversion in fs/binfmt_elf_fdpic.c BUG_ON() Conversion in input/serio/hil_mlc.c BUG_ON() Conversion in md/dm-hw-handler.c BUG_ON() Conversion in md/bitmap.c The comment describing how MS_ASYNC works in msync.c is confusing rcu: undeclared variable used in documentation fix typos "wich" -> "which" typo patch for fs/ufs/super.c Fix simple typos tabify drivers/char/Makefile ...
2006-03-25[PATCH] More corrections to vfs.txt updateNeilBrown
Thanks "Randy.Dunlap" <rdunlap@xenotime.net> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25[PATCH] udf: fix uid/gid options and add uid/gid=ignore and forget optionsPhillip Susi
As Pekka Enberg pointed out, with the if still following the else, you can still get a null uid written to the disk if you specify a default uid= without uid=forget. In other words, if the desktop user is uid=1000 and the mount option uid=1000 is given ( which is done on ubuntu automatically and probably other distributions that use hal ), then if any other user besides uid 1000 owns a file then a 0 will be written to the media as the owning uid instead. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25[PATCH] Update some VFS documentationNeilBrown
Flesh out the description of the address_space operations. Signed-off-by: Neil Brown <neilb@suse.de> Cc: Avishay Traeger <atraeger@cs.sunysb.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25[PATCH] 9p: update documentationEric Van Hensbergen
Fix documentation to match current implementation. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25[PATCH] 9p: fix name consistency problemsEric Van Hensbergen
There were a number of conflicting naming schemes used in the v9fs project. The directory was fs/9p, but MAINTAINERS and Documentation referred to v9fs. The module name itself was 9p2000, and the file system type was 9P. This patch attempts to clean that up, changing all references to 9p in order to match the directory name. We'll also start using 9p instead of v9fs as our patch prefix. There is also a minor consistency cleanup in the options changing the name option to uname in order to more closely match the Plan 9 options. Signed-off-by: Eric Van Hensbergevan <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24fix typos "wich" -> "which"Uwe Zeisberger
Signed-off-by: Uwe Zeisberger <zeisberg@informatik.uni-freiburg.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-23NTFS: 2.1.27 - Various bug fixes and cleanups.Anton Altaparmakov
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2006-03-22It's UTF-8Alexey Dobriyan
Fix some comments to "UTF-8". Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-02-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/aia21/ntfs-2.6Linus Torvalds
2006-02-24[PATCH] tmpfs: recommend remount for mpolHugh Dickins
akpm points out that switching to a non-NUMA kernel could be irritating if mounting tmpfs fails on an mpol option: tmpfs.txt recommend remount. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-24NTFS: Do more detailed reporting of why we cannot mount read-write byAnton Altaparmakov
special casing the VOLUME_MODIFIED_BY_CHKDSK flag. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2006-02-21[PATCH] tmpfs: fix mount mpol nodelist parsingHugh Dickins
I've been dissatisfied with the mpol_nodelist mount option which was added to tmpfs earlier in -rc. Replace it by mpol=policy:nodelist. And it was broken: a nodelist is a comma-separated list of numbers and ranges; the mount options are a comma-separated list of token=values. Whoops, blindly strsep'ing on commas doesn't work so well: since we've no numeric tokens, and unlikely to add them, use that to distinguish. Move the mpol= parsing to shmem_parse_mpol under CONFIG_NUMA, reject all its options as invalid if not NUMA. /proc shows MPOL_PREFERRED as "prefer", so use that name for the policy instead of "preferred". Enforce that mpol=default has no nodelist; that mpol=prefer has one node only; that mpol=bind has a nodelist; but let mpol=interleave use node_online_map if no nodelist given. Describe this in tmpfs.txt. Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: Robin Holt <holt@sgi.com> Acked-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-20[PATCH] v9fs: update documentation and fix debug flagEric Van Hensbergen
Minor updates to the documentation to bring them into sync with current websites and available features. The debug flag was switched back to hex to match the documentation. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-03configfs: Add permission and ownership to configfs objects.Joel Becker
configfs always made item and attribute ownership root.root and permissions based on a umask of 022. Add ->setattr() to allow chown(2)/chmod(2), and persist the changes for the lifetime of the items and attributes. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-02-03[OCFS2] Documentation FixJ. Bruce Fields
Update ocfs2.txt to add "cluster aware lockf" under missing features. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-01-16[PATCH] fuse: update documentation for sysfsMiklos Szeredi
Add documentation for new attributes in sysfs. Also describe the filesystem. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-14[PATCH] Add tmpfs options for memory placement policiesRobin Holt
Anything that writes into a tmpfs filesystem is liable to disproportionately decrease the available memory on a particular node. Since there's no telling what sort of application (e.g. dd/cp/cat) might be dropping large files there, this lets the admin choose the appropriate default behavior for their site's situation. Introduce a tmpfs mount option which allows specifying a memory policy and a second option to specify the nodelist for that policy. With the default policy, tmpfs will behave as it does today. This patch adds support for preferred, bind, and interleave policies. The default policy will cause pages to be added to tmpfs files on the node which is doing the writing. Some jobs expect a single process to create and manage the tmpfs files. This results in a node which has a significantly reduced number of free pages. With this patch, the administrator can specify the policy and nodes for that policy where they would prefer allocations. This patch was originally written by Brent Casavant and Hugh Dickins. I added support for the bind and preferred policies and the mpol_nodelist mount option. Signed-off-by: Brent Casavant <bcasavan@sgi.com> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] ext3: fix documentation of online resizingTore Anderson
Undocument the non-working resize= mount option in ext3, and add some references to the ext2resize package instead, which appears to be the only proper way of doing online resizing of ext3 filesystems. Signed-off-by: Tore Anderson <tore@fud.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10[PATCH] Docs update: small spelling, formating etc fixes for ↵Jesper Juhl
filesystems/ext3.txt Spelling fixes, formating changes and corrections for Documentation/filesystems/ext3.txt Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-09Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds
2006-01-10Documentation/filesystems/proc.txt: indentation fixAdrian Bunk
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-01-09[PATCH] PCI: document sysfs rom file interfaceJesse Barnes
idr gently pointed out today that not only is the sysfs rom file interface somewhat unintuitive (despite my efforts and initial implementation), but it's also undocumented! This patch to Documentation/filesystems/sysfs-pci.txt corrects the latter problem; the former is a userland ABI now though, so we're stuck with it for awhile at least. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds
2006-01-08[PATCH] update to the initramfs docsRob Landley
Based on questions people have asked me. Repeatedly. Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] ext3: external journal device as a mount optionJohann Lombardi
The patch below adds a new mount option to allow the external journal device to be specified. The syntax is as follows: # mount -t ext3 -o journal_dev=0x0820 ... where 0x0820 means major=8 and minor=32. Signed-off-by: Johann Lombardi <johann.lombardi@bull.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] relayfs: Documentation cleanup, remove obsolete infoTom Zanussi
librelay and relay-app.h have been retired - update Documentation to reflect that. Signed-off-by: Tom Zanussi <zanussi@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] relayfs: add Documentation on global relay buffersTom Zanussi
Documentation update for creating global buffers. Signed-off-by: Tom Zanussi <zanussi@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] relayfs: add Documentation on relay files in other filesystemsTom Zanussi
Documentation update for creating relay files in other filesystems. Signed-off-by: Tom Zanussi <zanussi@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] relayfs: add Documention for non-relay filesTom Zanussi
Documentation update for non-relay files. Signed-off-by: Tom Zanussi <zanussi@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] drop-pagecacheAndrew Morton
Add /proc/sys/vm/drop_caches. When written to, this will cause the kernel to discard as much pagecache and/or reclaimable slab objects as it can. THis operation requires root permissions. It won't drop dirty data, so the user should run `sync' first. Caveats: a) Holds inode_lock for exorbitant amounts of time. b) Needs to be taught about NUMA nodes: propagate these all the way through so the discarding can be controlled on a per-node basis. This is a debugging feature: useful for getting consistent results between filesystem benchmarks. We could possibly put it under a config option, but it's less than 300 bytes. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-09[PATCH] spufs: The SPU file system, baseArnd Bergmann
This is the current version of the spu file system, used for driving SPEs on the Cell Broadband Engine. This release is almost identical to the version for the 2.6.14 kernel posted earlier, which is available as part of the Cell BE Linux distribution from http://www.bsc.es/projects/deepcomputing/linuxoncell/. The first patch provides all the interfaces for running spu application, but does not have any support for debugging SPU tasks or for scheduling. Both these functionalities are added in the subsequent patches. See Documentation/filesystems/spufs.txt on how to use spufs. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-05Merge http://oss.oracle.com/git/ocfs2Linus Torvalds
2006-01-03[PATCH] OCFS2: The Second Oracle Cluster FilesystemMark Fasheh
The OCFS2 file system module. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
2006-01-03[PATCH] OCFS2: The Second Oracle Cluster FilesystemMark Fasheh
dlmfs: A minimal dlm userspace interface implemented via a virtual file system. Most of the OCFS2 tools make use of this to take cluster locks when doing operations on the file system. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
2006-01-03[PATCH] configfs: User-driven configuration filesystemJoel Becker
Configfs, a file system for userspace-driven kernel object configuration. The OCFS2 stack makes extensive use of this for propagation of cluster configuration information into kernel. Signed-off-by: Joel Becker <joel.becker@oracle.com>
2006-01-03Documentation/filesystems/00-INDEX: remove entry for fat_cvf.txtPaolo 'Blaisorblade' Giarrusso
Remove non-existing entry for fat_cvf.txt (was it ever supported?). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-01-03Documentation/filesystems/vfs.txt: typo fixJim Cromie
This patch removes an extra occurrence of 'generic'. Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2005-12-12[PATCH] ext3: fix mount options documentationAndreas Gruenbacher
Reported by Jacques de Mer and Daniel Drake <dsd@gentoo.org>. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-22[PATCH] kernel Doc/ URL correctionsRandy Dunlap
Correct lots of URLs in Documentation/ Also a few minor whitespace cleanups and typo/spello fixes. Sadly there are still a lot of bad URLs remaining. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] remove CONFIG_EXT{2,3}_CHECKAdrian Bunk
The CONFIG_EXT{2,3}_CHECK options where were never available, and all they did was to implement a subset of e2fsck in the kernel. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07[PATCH] ramfs, rootfs, and initramfs docsRob Landley
Docs for ramfs, rootfs, and initramfs. Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07[PATCH] VFS: split dentry locking documentationPekka Enberg
This patch splits dentry locking documentation from Documentation/filesystems/vfs.txt to a separate file. The dentry locking bits are useful but do not fit into the VFS overview document as is. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07[PATCH] VFS: update overview documentPekka Enberg
This patch updates the Documentation/filesystems/vfs.txt document. I rearranged and rewrote parts of the introduction chapter and added better headings for each section. I also added a description for the inode rename() operation which was missing and added links to some useful external VFS documentation. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>