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* GFS2: Use DEFINE_SPINLOCKJulia Lawall2009-01-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | SPIN_LOCK_UNLOCKED is deprecated. The following makes the change suggested in Documentation/spinlocks.txt The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ declarer name DEFINE_SPINLOCK; identifier xxx_lock; @@ - spinlock_t xxx_lock = SPIN_LOCK_UNLOCKED; + DEFINE_SPINLOCK(xxx_lock); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Fix use-after-free bug on umount (try #2)Steven Whitehouse2009-01-052-9/+12
| | | | | | This should solve the issue with the previous attempt at fixing this. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* Revert "GFS2: Fix use-after-free bug on umount"Steven Whitehouse2009-01-056-94/+114
| | | | | | | | | | This reverts commit 78802499912f1ba31ce83a94c55b5a980f250a43. The original patch is causing problems in relation to order of operations at umount in relation to jdata files. I need to fix this a different way. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Streamline alloc calculations for writesSteven Whitehouse2009-01-054-49/+42
| | | | | | | | | This patch removes some unused code, and make the calculation of the number of blocks required conditional in order to reduce the number of times this (potentially expensive) calculation is done. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Send useful information with uevent messagesSteven Whitehouse2009-01-051-2/+10
| | | | | | | | | | | | | | | | | | | | | | In order to distinguish between two differing uevent messages and to avoid using the (racy) method of reading status from sysfs in future, this adds some status information to our uevent messages. Btw, before anybody says "sysfs isn't racy", I'm aware of that, but the way that GFS2 was using it (send an ambiugous uevent and then expect the receiver to read sysfs to find out the status of the reported operation) was. The additional benefit of using the new interface is that it should be possible for a node to recover multiple journals at the same time, since there is no longer any confusion as to which journal the status belongs to. At some future stage, when all the userland programs have been converted, I intend to remove the old interface. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Fix use-after-free bug on umountSteven Whitehouse2009-01-056-114/+94
| | | | | | | | | | | | | | | There was a use-after-free with the GFS2 super block during umount. This patch moves almost all of the umount code from ->put_super into ->kill_sb, the only bit that cannot be moved being the glock hash clearing which has to remain as ->put_super due to umount ordering requirements. As a result its now obvious that the kfree is the final operation, whereas before it was hidden in ->put_super. Also gfs2_jindex_free is then only referenced from a single file so thats moved and marked static too. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Remove ancient, unused codeSteven Whitehouse2009-01-053-18/+0
| | | | | | | Remove code that used to have something to do with initrd but has been unused for a long time. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Move four functions from super.cSteven Whitehouse2009-01-055-168/+167
| | | | | | | | | | The functions which are being moved can all be marked static in their new locations, since they only have a single caller each. Their new locations are more logical than before and some of the functions are small enough that the compiler might well inline them. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Fix bug in gfs2_lock_fs_check_clean()Steven Whitehouse2009-01-054-75/+68
| | | | | | | | | gfs2_lock_fs_check_clean() should not be calling gfs2_jindex_hold() since it doesn't work like rindex hold, despite the comment. That allows gfs2_jindex_hold() to be moved into ops_fstype.c where it can be made static. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Send some sensible sysfs stuffSteven Whitehouse2009-01-052-2/+30
| | | | | | | We ought to inform the user of the locktable and lockproto for each uevent we generate. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Kill two daemons with one patchSteven Whitehouse2009-01-0513-341/+130
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the two daemons, gfs2_scand and gfs2_glockd and replaces them with a shrinker which is called from the VM. The net result is that GFS2 responds better when there is memory pressure, since it shrinks the glock cache at the same rate as the VFS shrinks the dcache and icache. There are no longer any time based criteria for shrinking glocks, they are kept until such time as the VM asks for more memory and then we demote just as many glocks as required. There are potential future changes to this code, including the possibility of sorting the glocks which are to be written back into inode number order, to get a better I/O ordering. It would be very useful to have an elevator based workqueue implementation for this, as that would automatically deal with the read I/O cases at the same time. This patch is my answer to Andrew Morton's remark, made during the initial review of GFS2, asking why GFS2 needs so many kernel threads, the answer being that it doesn't :-) This patch is a net loss of about 200 lines of code. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Move gfs2_recoverd into recovery.cSteven Whitehouse2009-01-056-43/+45
| | | | | | | | | | | | By moving gfs2_recoverd, we can make an additional function static and it also leaves only (the already scheduled for removal) gfs2_glockd in daemon.c. At the same time the declaration of gfs2_quotad is moved to quota.h to reflect the new location of gfs2_quotad in a previous patch. Also the recovery.h and quota.h headers are cleaned up. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Fix "truncate in progress" hangSteven Whitehouse2009-01-057-7/+75
| | | | | | | | | | | | | | | | | | | | | | | Following on from the recent clean up of gfs2_quotad, this patch moves the processing of "truncate in progress" inodes from the glock workqueue into gfs2_quotad. This fixes a hang due to the "truncate in progress" processing requiring glocks in order to complete. It might seem odd to use gfs2_quotad for this particular item, but we have to use a pre-existing thread since creating a thread implies a GFP_KERNEL memory allocation which is not allowed from the glock workqueue context. Of the existing threads, gfs2_logd and gfs2_recoverd may deadlock if used for this operation. gfs2_scand and gfs2_glockd are both scheduled for removal at some (hopefully not too distant) future point. That leaves only gfs2_quotad whose workload is generally fairly light and is easily adapted for this extra task. Also, as a result of this change, it opens the way for a future patch to make the reading of the inode's information asynchronous with respect to the glock workqueue, which is another improvement that has been on the list for some time now. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Clean up & move gfs2_quotadSteven Whitehouse2009-01-059-69/+84
| | | | | | | | | | | | | | | | | | | | | | This patch is a clean up of gfs2_quotad prior to giving it an extra job to do in addition to the current portfolio of updating the quota and statfs information from time to time. As a result it has been moved into quota.c allowing one of the functions it calls to be made static. Also the clean up allows the two existing functions to have separate timeouts and also to coexist with its future role of dealing with the "truncate in progress" inode flag. The (pointless) setting of gfs2_quotad_secs is removed since we arrange to only wake up quotad when one of the two timers expires. In addition the struct gfs2_quota_data is moved into a slab cache, mainly for easier debugging. It should also be possible to use a shrinker in the future, rather than the current scheme of scanning the quota data entries from time to time. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Add more detail to debugfs glock dumpsSteven Whitehouse2009-01-051-3/+8
| | | | | | | | | | | Although the glock dumps print quite a lot of information about the glocks themselves, there are more things which can be usefully added to the dump realting to the objects themselves. This patch adds a few more fields to the inode and resource group lines, which should be useful for debugging. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Banish struct gfs2_rgrpd_hostSteven Whitehouse2009-01-053-21/+13
| | | | | | | | | This patch moves the final field so that we can get rid of struct gfs2_rgrpd_host, as promised some time ago. Also by rearranging the fields slightly, we are able to reduce the size of the gfs2_rgrpd structure at the same time. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Move rg_free from gfs2_rgrpd_host to gfs2_rgrpdSteven Whitehouse2009-01-053-16/+16
| | | | | | | The second of three fields which need to move, in order to remove the struct gfs2_rgrpd_host. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Move rg_igeneration into struct gfs2_rgrpdSteven Whitehouse2009-01-052-4/+4
| | | | | | | | This moves one of the fields of struct gfs2_rgrpd_host into the struct gfs2_rgrpd with the eventual aim of removing the struct rgrpd_host completely. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Banish struct gfs2_dinode_hostSteven Whitehouse2009-01-0512-48/+38
| | | | | | | | | | | | The final field in gfs2_dinode_host was the i_flags field. Thats renamed to i_diskflags in order to avoid confusion with the existing inode flags, and moved into the inode proper at a suitable location to avoid creating a "hole". At that point struct gfs2_dinode_host is no longer needed and as promised (quite some time ago!) it can now be removed completely. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Move i_size from gfs2_dinode_host and rename it to i_disksizeSteven Whitehouse2009-01-0511-55/+56
| | | | | | | This patch moved the i_size field from the gfs2_dinode_host and following the ext3 convention renames it i_disksize. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Move di_eattr into "proper" inodeSteven Whitehouse2009-01-055-20/+20
| | | | | | | This moves the di_eattr field out of gfs2_inode_host and into the inode proper. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Move "entries" into "proper" inodeSteven Whitehouse2009-01-054-24/+23
| | | | | | | | | This moves the directory entry count into the proper inode. Potentially we could get this to share the space used by something else in the future, but this is one more step on the way to removing the gfs2_dinode_host structure. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Move generation number into "proper" part of inodeSteven Whitehouse2009-01-052-3/+3
| | | | | | | | This moves the generation number from the gfs2_dinode_host into the gfs2_inode structure. Eventually the plan is to get rid of the gfs2_dinode_host structure completely. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: sparse annotation of gl->gl_spinHarvey Harrison2009-01-051-0/+8
| | | | | | | | | | | | fs/gfs2/glock.c:308:5: warning: context problem in 'do_promote': '_spin_unlock' expected different context fs/gfs2/glock.c:308:5: context '*gl+28': wanted >= 1, got 0 fs/gfs2/glock.c:529:2: warning: context problem in 'do_xmote': '_spin_unlock' expected different context fs/gfs2/glock.c:529:2: context '*gl+28': wanted >= 1, got 0 fs/gfs2/glock.c:925:3: warning: context problem in 'add_to_queue': '_spin_unlock' expected different context fs/gfs2/glock.c:925:3: context '*gl+28': wanted >= 1, got 0 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Fix up jdata writepage/delete_inodeSteven Whitehouse2009-01-052-12/+11
| | | | | | | | | There is a bug in writepage and delete_inode which allows jdata files to invalidate pages from the address space without being in a transaction at the time. This causes problems in case the pages are in the journal. This patch fixes that case and prevents the resulting oops. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Rationalise header filesSteven Whitehouse2009-01-0514-90/+23
| | | | | | | | Move the contents of some headers which contained very little into more sensible places, and remove the original header files. This should make it easier to find things. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Support for FIEMAP ioctlSteven Whitehouse2009-01-051-0/+46
| | | | | | | | | | | | | | | | | | This patch implements the FIEMAP ioctl for GFS2. We can use the generic code (aside from a lock order issue, solved as per Ted Tso's suggestion) for which I've introduced a new variant of the generic function. We also have one exception to deal with, namely stuffed files, so we do that "by hand", setting all the required flags. This has been tested with a modified (I could only find an old version) of Eric's test program, and appears to work correctly. This patch does not currently support FIEMAP of xattrs, but the plan is to add that feature at some future point. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Theodore Tso <tytso@mit.edu> Cc: Eric Sandeen <sandeen@redhat.com>
* fs: symlink write_begin allocation context fixNick Piggin2009-01-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the write_begin/write_end aops, page_symlink was broken because it could no longer pass a GFP_NOFS type mask into the point where the allocations happened. They are done in write_begin, which would always assume that the filesystem can be entered from reclaim. This bug could cause filesystem deadlocks. The funny thing with having a gfp_t mask there is that it doesn't really allow the caller to arbitrarily tinker with the context in which it can be called. It couldn't ever be GFP_ATOMIC, for example, because it needs to take the page lock. The only thing any callers care about is __GFP_FS anyway, so turn that into a single flag. Add a new flag for write_begin, AOP_FLAG_NOFS. Filesystems can now act on this flag in their write_begin function. Change __grab_cache_page to accept a nofs argument as well, to honour that flag (while we're there, change the name to grab_cache_page_write_begin which is more instructive and does away with random leading underscores). This is really a more flexible way to go in the end anyway -- if a filesystem happens to want any extra allocations aside from the pagecache ones in ints write_begin function, it may now use GFP_KERNEL (rather than GFP_NOFS) for common case allocations (eg. ocfs2_alloc_write_ctxt, for a random example). [kosaki.motohiro@jp.fujitsu.com: fix ubifs] [kosaki.motohiro@jp.fujitsu.com: fix fuse] Signed-off-by: Nick Piggin <npiggin@suse.de> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: <stable@kernel.org> [2.6.28.x] Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Cleaned up the calling convention: just pass in the AOP flags untouched to the grab_cache_page_write_begin() function. That just simplifies everybody, and may even allow future expansion of the logic. - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* CRED: Wrap task credential accesses in the GFS2 filesystemDavid Howells2008-11-141-5/+5
| | | | | | | | | | | | | | | | | | Wrap access to task credentials so that they can be separated more easily from the task_struct during the introduction of COW creds. Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id(). Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more sense to use RCU directly rather than a convenient wrapper; these will be addressed by later patches. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: cluster-devel@redhat.com Signed-off-by: James Morris <jmorris@namei.org>
* [PATCH] switch all filesystems over to d_obtain_aliasChristoph Hellwig2008-10-231-24/+9
| | | | | | | Switch all users of d_alloc_anon to d_obtain_alias. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] make O_EXCL in nd->intent.flags visible in nd->flagsAl Viro2008-10-231-1/+1
| | | | | | | New flag: LOOKUP_EXCL. Set before doing the final step of pathname resolution on the paths that have LOOKUP_CREATE and O_EXCL. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* vfs: Use const for kernel parser tableSteven Whitehouse2008-10-131-1/+1
| | | | | | | | | | | | | | This is a much better version of a previous patch to make the parser tables constant. Rather than changing the typedef, we put the "const" in all the various places where its required, allowing the __initconst exception for nfsroot which was the cause of the previous trouble. This was posted for review some time ago and I believe its been in -mm since then. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Alexander Viro <aviro@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-10-101-1/+2
|\ | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm: dlm: choose better identifiers dlm: remove bkl dlm: fix address compare dlm: fix locking of lockspace list in dlm_scand dlm: detect available userspace daemon dlm: allow multiple lockspace creates
| * dlm: allow multiple lockspace createsDavid Teigland2008-08-281-1/+2
| | | | | | | | | | | | | | | | | | | | Add a count for lockspace create and release so that create can be called multiple times to use the lockspace from different places. Also add the new flag DLM_LSFL_NEWEXCL to create a lockspace with the previous behavior of returning -EEXIST if the lockspace already exists. Signed-off-by: David Teigland <teigland@redhat.com>
* | GFS2: Support for I/O barriersSteven Whitehouse2008-09-262-3/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds barrier support to GFS2. There is not a lot of change really... we just add the barrier flag when we write journal header blocks. If the underlying device refuses to support them, we fall back to the previous way of doing things (wait for the I/O and hope) since there is nothing else we can do. There is no user configuration, barriers will always be on unless the device refuses to support them. This seems a reasonable solution to me since this is a correctness issue. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* | GFS2: high time to take some time over atimeSteven Whitehouse2008-09-1810-167/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Until now, we've used the same scheme as GFS1 for atime. This has failed since atime is a per vfsmnt flag, not a per fs flag and as such the "noatime" flag was not getting passed down to the filesystems. This patch removes all the "special casing" around atime updates and we simply use the VFS's atime code. The net result is that GFS2 will now support all the same atime related mount options of any other filesystem on a per-vfsmnt basis. We do lose the "lazy atime" updates, but we gain "relatime". We could add lazy atime to the VFS at a later date, if there is a requirement for that variant still - I suspect relatime will be enough. Also we lose about 100 lines of code after this patch has been applied, and I have a suspicion that it will speed things up a bit, even when atime is "on". So it seems like a nice clean up as well. From a user perspective, everything stays the same except the loss of the per-fs atime quantum tweekable (ought to be per-vfsmnt at the very least, and to be honest I don't think anybody ever used it) and that a number of options which were ignored before now work correctly. Please let me know if you've got any comments. I'm pushing this out early so that you can all see what my plans are. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* | GFS2: The war on bloatSteven Whitehouse2008-09-181-15/+15
| | | | | | | | | | | | | | | | | | | | The following patch shrinks the gfs2_args structure which is embedded in every GFS2 superblock. It cuts down the size of the options to a single unsigned int (the 13 bits of bitfields will be rounded up to that size by the compiler) from the current 11 unsigned ints. So on x86 thats 44 bytes shrinking to 4 bytes, in each and every GFS2 superblock. Signed-off-by: Steven Whitehouse <swhitho@redhat.com>
* | GFS2: GFS2 will panic if you misspell any mount optionsAbhijith Das2008-09-151-6/+9
| | | | | | | | | | | | | | | | | | | | | | The gfs2 superblock pointer is NULL after a failed mount. When control eventually goes to gfs2_kill_sb, we dereference this NULL pointer. This patch ensures that the gfs2 superblock pointer is not NULL before being dereferenced in gfs2_kill_sb. Signed-off-by: Abhijith Das <adas@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* | GFS2: Direct IO write at end of file errorBob Peterson2008-09-151-1/+1
| | | | | | | | | | | | | | | | This patch fixes a problem whereby a direct_io write doesn't fall back to buffered write properly at end of file. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* | GFS2: Use an IS_ERR test rather than a NULL testJulien Brunel2008-09-051-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case of error, the function gfs2_inode_lookup returns an ERR pointer, but never returns a NULL pointer. So a NULL test that necessarily comes after an IS_ERR test should be deleted, and a NULL test that may come after a call to this function should be strengthened by an IS_ERR test. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @match_bad_null_test@ expression x, E; statement S1,S2; @@ x = gfs2_inode_lookup(...) ... when != x = E * if (x != NULL) S1 else S2 // </smpl> Signed-off-by: Julien Brunel <brunel@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* | GFS2: Fix race relating to glock min-hold timeSteven Whitehouse2008-09-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In the case that a request for a glock arrives right after the grant reply has arrived, it sometimes means that the gl_tstamp field hasn't been updated recently enough. The net result is that the min-hold time for the glock is ignored. If this happens often enough, it leads to poor performance. This patch adds an additional test, so that if the reply pending bit is set on a glock, then it will select the maximum length of time for the min-hold time, rather than looking at gl_tstamp. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* | GFS2: Fix & clean up GFS2 renameSteven Whitehouse2008-08-273-60/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a locking issue in the rename code by ensuring that we hold the per sb rename lock over both directory and "other" renames which involve different parent directories. At the same time, this moved the (only called from one place) function gfs2_ok_to_move into the file that its called from, so we can mark it static. This should make a code a bit easier to follow. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Peter Staubach <staubach@redhat.com>
* | GFS2: rm on multiple nodes causes panicBob Peterson2008-08-131-18/+38
| | | | | | | | | | | | | | | | | | | | | | This patch fixes a problem whereby simultaneous unlink, rmdir, rename and link operations (e.g. rm -fR *) from multiple nodes on the same GFS2 file system can cause kernel panics, hangs, and/or memory corruption. It also gets rid of all the non-rgrp calls to gfs2_glock_nq_m. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* | GFS2: Fix metafs mountsSteven Whitehouse2008-08-136-535/+448
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is intended to fix the issues reported in bz #457798. Instead of having the metafs as a separate filesystem, it becomes a second root of gfs2. As a result it will appear as type gfs2 in /proc/mounts, but it is still possible (for backwards compatibility purposes) to mount it as type gfs2meta. A new mount flag "meta" is introduced so that its possible to tell the two cases apart in /proc/mounts. As a result it becomes possible to mount type gfs2 with -o meta and get the same result as mounting type gfs2meta. So it is possible to mount just the metafs on its own. Currently if you do this, its then impossible to mount the "normal" root of the gfs2 filesystem without first unmounting the metafs root. I'm not sure if thats a feature or a bug :-) Either way, this is a great improvement on the previous scheme and I've verified that it works ok with bind mounts on both the "normal" root and the metafs root in various combinations. There were also a bunch of functions in super.c which didn't belong there, so this moves them into ops_fstype.c where they can be static. Hopefully the mount/umount sequence is now more obvious as a result. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Alexander Viro <aviro@redhat.com>
* | GFS2: Fix debugfs glock file iteratorSteven Whitehouse2008-08-131-5/+6
|/ | | | | | | | Due to an incorrect iterator, some glocks were being missed from the glock dumps obtained via debugfs. This patch fixes the problem and ensures that we don't miss any glocks in future. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [PATCH] don't pass nameidata to gfs2_lookupi()Al Viro2008-07-265-8/+8
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] sanitize ->permission() prototypeAl Viro2008-07-261-9/+3
| | | | | | | | | | | | | | | * kill nameidata * argument; map the 3 bits in ->flags anybody cares about to new MAY_... ones and pass with the mask. * kill redundant gfs2_iop_permission() * sanitize ecryptfs_permission() * fix remaining places where ->permission() instances might barf on new MAY_... found in mask. The obvious next target in that direction is permission(9) folded fix for nfs_permission() breakage from Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* SL*B: drop kmem cache argument from constructorAlexey Dobriyan2008-07-261-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Kmem cache passed to constructor is only needed for constructors that are themselves multiplexeres. Nobody uses this "feature", nor does anybody uses passed kmem cache in non-trivial way, so pass only pointer to object. Non-trivial places are: arch/powerpc/mm/init_64.c arch/powerpc/mm/hugetlbpage.c This is flag day, yes. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Christoph Lameter <cl@linux-foundation.org> Cc: Jon Tollefson <kniht@linux.vnet.ibm.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Matt Mackall <mpm@selenic.com> [akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c] [akpm@linux-foundation.org: fix mm/slab.c] [akpm@linux-foundation.org: fix ubifs] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmwLinus Torvalds2008-07-1532-1946/+1161
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: [GFS2] Fix GFS2's use of do_div() in its quota calculations [GFS2] Remove unused declaration [GFS2] Remove support for unused and pointless flag [GFS2] Replace rgrp "recent list" with mru list [GFS2] Allow local DF locks when holding a cached EX glock [GFS2] Fix delayed demote race [GFS2] don't call permission() [GFS2] Fix module building [GFS2] Glock documentation [GFS2] Remove all_list from lock_dlm [GFS2] Remove obsolete conversion deadlock avoidance code [GFS2] Remove remote lock dropping code [GFS2] kernel panic mounting volume [GFS2] Revise readpage locking [GFS2] Fix ordering of args for list_add [GFS2] trivial sparse lock annotations [GFS2] No lock_nolock [GFS2] Fix ordering bug in lock_dlm [GFS2] Clean up the glock core
| * [GFS2] Fix GFS2's use of do_div() in its quota calculationsDavid Howells2008-07-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Fix GFS2's need_sync()'s use of do_div() on an s64 by using div_s64() instead. This does assume that gt_quota_scale_den can be cast to an s32. This was introduced by patch b3b94faa5fe5968827ba0640ee9fba4b3e7f736e. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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