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* [GFS2] Fix unlink deadlocksRussell Cattelan2007-02-051-45/+1
| | | | | | | | | | | | | | | | | | Move the glock acquisition to outside of the transactions. Lock odering must be preserved in order to prevent ABBA deadlocks. The current gfs2_change_nlink code would tries to grab the glock after having started a transaction and thus is holding the log lock. This is inconsistent with other code paths in gfs that grab the resource group glock prior to staring a tranactions. One problem with this fix is that the resource group lock is always grabbed now even if the inode still has ref count and can not be marked for unlink. Signed-off-by: Russell Cattelan <cattelan@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix recursive locking attempt with NFSSteven Whitehouse2007-02-051-8/+15
| | | | | | | | | In certain cases, its possible for NFS to call the lookup code while holding the glock (when doing a readdirplus operation) so we need to check for that and not try and lock the glock twice. This also fixes a typo in a previous NFS related GFS2 patch. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] use CURRENT_TIME_SEC instead of get_seconds in gfs2Eric Sandeen2007-02-051-1/+1
| | | | | | | | | | | | | | | | | | I was looking something else up and came across this... I don't honestly have a good reason to change it other than to make it like every other Linux filesystem in this regard. ;-) It doesn't functionally change anything, but makes some lines shorter. :) I'm also curious; why does gfs2 have 64-bits of on-disk timestamps, but not in timespec_t format, and only stores second resolutions? Seems like you're halfway to sub-second resolutions already. I suppose if that gets implemented then all of the below should instead be CURRENT_TIME not CURRENT_TIME_SEC. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] make gfs2_change_nlink_i() staticAdrian Bunk2007-02-051-44/+44
| | | | | | | | | | | | | | | | On Thu, Jan 11, 2007 at 10:26:27PM -0800, Andrew Morton wrote: >... > Changes since 2.6.20-rc3-mm1: >... > git-gfs2-nmw.patch >... > git trees >... This patch makes the needlessly globlal gfs2_change_nlink_i() static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix gfs2_rename deadlockS. Wendy Cheng2007-02-051-19/+31
| | | | | | | | | | | | | Second round of gfs2_rename lock re-ordering to allow Anaconda adding root partition on top of gfs2. Previous to this patch the recursive lock detector in glock.c can be triggered due to attempting to lock the rgrp twice. This fixes it by checking to see whether the rgrp is already locked. This fixes Red Hat bugzilla #221237 Signed-off-by: S. Wendy Cheng <wcheng@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] BZ 217008 fsfuzzer fix.Russell Cattelan2007-02-051-1/+11
| | | | | | | | | | | | | | | | Update the quilt header comments to match the code changes. Change gfs2_lookup_simple to return an error in the case of a NULL inode. The callers of gfs2_lookup_simple do not check for NULL in the no entry case and such would end up dereferencing a NULL ptr. This fixes: http://projects.info-pull.com/mokb/MOKB-15-11-2006.html Signed-off-by: Russell Cattelan <cattelan@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix change nlink deadlockS. Wendy Cheng2007-02-051-4/+16
| | | | | | | | | | | | | | | | | Bugzilla 215088 Fix deadlock in gfs2_change_nlink() while installing RHEL5 into GFS2 partition. The gfs2_rename() apparently needs block allocation for the new name (into the directory) where it requires rg locks. At the same time, while updating the nlink count for the replaced file, gfs2_change_nlink() tries to return the inode meta-data back to resource group where it needs rg locks too. Our logic doesn't allow process to acquire these locks recursively by the same process (RHEL installer) that results a BUG call. This only happens within rename code path and only if the destination file exists before the rename operation. Signed-off-by: S. Wendy Cheng <wcheng@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix glock ordering on inode creationSteven Whitehouse2006-11-301-27/+4
| | | | | | | The lock order here should be parent -> child rather than numeric order. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Remove unused function from inode.cSteven Whitehouse2006-11-301-86/+0
| | | | | | | | The gfs2_glock_nq_m_atime function is unused in so far as its only ever called with num_gh = 1, and this falls through to the gfs2_glock_nq_atime function, so we might as well call that directly. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Remove gfs2_inode_attr_inSteven Whitehouse2006-11-301-18/+3
| | | | | | | | | | | | This function wasn't really doing the right thing. There was no need to update the inode size at this point and the updating of the i_blocks field has now been moved to the places where di_blocks is updated. A result of this patch and some those preceeding it is that unlocking a glock is now a much more efficient process, since there is no longer any requirement to copy data from the gfs2 inode into the vfs inode at this point. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Inode number is constantSteven Whitehouse2006-11-301-1/+1
| | | | | | | Since the inode number is constant, we don't need to keep updating it everytime we refresh the other inode fields. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Only set inode flags when requiredSteven Whitehouse2006-11-301-10/+1
| | | | | | | | | | | | We were setting the inode flags from GFS2's flags far too often, even when they couldn't possibly have changed. This patch reduces the amount of flag setting going on so that we do it only when the inode is read in or when the flags have changed. The create case is covered by the "when the inode is read in" case. This also fixes a bug where we didn't set S_SYNC correctly. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Tidy up 0 initialisations in inode.cSteven Whitehouse2006-11-301-7/+7
| | | | | | | | | We don't need to use endian conversions for 0 initialisations when creating a new on-disk inode. Cc: Christoph Hellwig <hch@infradead.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Shrink gfs2_inode (8) - i_vnSteven Whitehouse2006-11-301-2/+2
| | | | | | | | This shrinks the size of the gfs2_inode by 8 bytes by replacing the version counter with a one bit valid/invalid flag. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Shrink gfs2_inode (7) - di_payload_formatSteven Whitehouse2006-11-301-2/+1
| | | | | | | | | | This is almost never used. Its there for backward compatibility with GFS1. It doesn't need its own field since it can always be calculated from the inode mode & flags. This saves a bit more space in the gfs2_inode. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Shrink gfs2_inode (6) - di_atime/di_mtime/di_ctimeSteven Whitehouse2006-11-301-33/+11
| | | | | | | Remove the di_[amc]time fields and use inode->i_[amc]time fields instead. This saves 24 bytes from the gfs2_inode. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Shrink gfs2_inode (5) - di_nlinkSteven Whitehouse2006-11-301-13/+24
| | | | | | | | Remove the di_nlink field in favour of inode->i_nlink and update the nlink handling to use the proper macros. This saves 4 bytes. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Shrink gfs2_inode (4) - di_uid/di_gidSteven Whitehouse2006-11-301-14/+9
| | | | | | | Remove duplicate di_uid/di_gid fields in favour of using inode->i_uid/inode->i_gid instead. This saves 8 bytes. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Shrink gfs2_inode (3) - di_modeSteven Whitehouse2006-11-301-11/+7
| | | | | | | This removes the duplicate di_mode field in favour of using the inode->i_mode field. This saves 4 bytes. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Shrink gfs2_inode (2) - di_major/di_minorSteven Whitehouse2006-11-301-20/+16
| | | | | | | | This removes the device numbers from this structure by using inode->i_rdev instead. It also cleans up the code in gfs2_mknod. It results in shrinking the gfs2_inode by 8 bytes. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Shrink gfs2_inode (1) - di_header/di_numSteven Whitehouse2006-11-301-14/+11
| | | | | | | | | | | | The metadata header doesn't need to be stored in the incore struct gfs2_inode since its constant, and this patch removes it. Also, there is already a field for the inode's number in the struct gfs2_inode, so we don't need one in struct gfs2_dinode_host as well. This saves 28 bytes of space in the struct gfs2_inode. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Change argument to gfs2_dinode_printSteven Whitehouse2006-11-301-4/+4
| | | | | | | | Change argument for gfs2_dinode_print in order to prepare for removal of duplicate fields between struct inode and struct gfs2_dinode_host. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Move gfs2_dinode_in to inode.cSteven Whitehouse2006-11-301-0/+34
| | | | | | | gfs2_dinode_in() is only ever called from one place, so move it to that place (in inode.c) and make it static. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Change argument to gfs2_dinode_inSteven Whitehouse2006-11-301-1/+1
| | | | | | | This is a preliminary patch to enable the removal of fields in gfs2_dinode_host which are duplicated in struct inode. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Change argument of gfs2_dinode_outSteven Whitehouse2006-11-301-3/+3
| | | | | | | | | | Everywhere this was called, a struct gfs2_inode was available, but despite that, it was always called with a struct gfs2_dinode as an argument. By making this change it paves the way to start eliminating fields duplicated between the kernel's struct inode and the struct gfs2_dinode. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] gfs2 misc endianness annotationsAl Viro2006-11-301-4/+5
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] split and annotate gfs2_inumAl Viro2006-11-301-11/+11
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] split and annotate gfs2_inum_rangeAl Viro2006-11-301-2/+2
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] split gfs2_dinode into on-disk and host variantsAl Viro2006-11-301-2/+2
| | | | | | | | | | The latter is used as part of gfs2-private part of struct inode. It actually stores a lot of fields differently; for now the declaration is just cloned, inode field is swtiched and changes propagated. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix OOM error handlingSteven Whitehouse2006-11-061-0/+3
| | | | | | | Fix the OOM error handling in inode.c where it was possible for a NULL pointer to be dereferenced. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Initialize SELinux extended attributes at inode creation time.Ryan O'Hara2006-10-031-0/+38
| | | | | | | | | | This patch has gfs2_security_init declared as a static function, which is correct. As a result, the declaration of this function in inode.h is removed (and thus inode.h is unchanged). Also removed #include eaops.h, which is not needed. Signed-Off-By: Ryan O'Hara <rohara@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Mark nlink cleared so VFS sees it happenSteven Whitehouse2006-10-021-0/+1
| | | | | | | This does nothing atm, but will be required for later support of r/o bind mounts. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Remove uneeded endian conversionSteven Whitehouse2006-10-021-1/+3
| | | | | | | | | | | | | In many places GFS2 was calling the endian conversion routines for an inode even when only a single field, or a few fields might have changed. As a result we were copying lots of data needlessly. This patch replaces those calls with conversion of just the required fields in each case. This should be faster and easier to understand. There are still other places which suffer from this problem, but this is a start in the right direction. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] inode-diet: Eliminate i_blksize from the inode structureTheodore Ts'o2006-09-281-1/+0
| | | | | | | | | | | | | This eliminates the i_blksize field from struct inode. Filesystems that want to provide a per-inode st_blksize can do so by providing their own getattr routine instead of using the generic_fillattr() function. Note that some filesystems were providing pretty much random (and incorrect) values for i_blksize. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
* [GFS2] inode_diet: Replace inode.u.generic_ip with inode.i_private (gfs)Theodore Ts'o2006-09-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | The following patches reduce the size of the VFS inode structure by 28 bytes on a UP x86. (It would be more on an x86_64 system). This is a 10% reduction in the inode size on a UP kernel that is configured in a production mode (i.e., with no spinlock or other debugging functions enabled; if you want to save memory taken up by in-core inodes, the first thing you should do is disable the debugging options; they are responsible for a huge amount of bloat in the VFS inode structure). This patch: The filesystem or device-specific pointer in the inode is inside a union, which is pretty pointless given that all 30+ users of this field have been using the void pointer. Get rid of the union and rename it to i_private, with a comment to explain who is allowed to use the void pointer. This is just a cleanup, but it allows us to reuse the union 'u' for something something where the union will actually be used. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
* [GFS2/DLM] Fix trailing whitespaceSteven Whitehouse2006-09-251-3/+2
| | | | | | | As per Andrew Morton's request, removed trailing whitespace. Cc: Andrew Morton <akpm@osdl.org> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Export lm_interface to kernel headersFabio Massimo Di Nitto2006-09-191-1/+1
| | | | | | | | | | | | | | | lm_interface.h has a few out of the tree clients such as GFS1 and userland tools. Right now, these clients keeps a copy of the file in their build tree that can go out of sync. Move lm_interface.h to include/linux, export it to userland and clean up fs/gfs2 to use the new location. Signed-off-by: Fabio M. Di Nitto <fabbione@ubuntu.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Remove a cast, tidy gfs2_inode_attr_inSteven Whitehouse2006-09-041-13/+14
| | | | | | | | The remains of the changes for Jan Engelhardt's third email. Remove a cast and tidy up gfs2_inode_attr_in. Cc: Jan Engelhardt <jengelh@linux01.gwdg.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Change all types to uX styleSteven Whitehouse2006-09-041-10/+10
| | | | | | | This makes all fixed size types have consistent names. Cc: Jan Engelhardt <jengelh@linux01.gwdg.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Tidy up bmap/inode codeSteven Whitehouse2006-09-041-26/+21
| | | | | | | | | As per Jan Engelhardt's third set of comments, this make various code style changes and moves the structures from format.h into super.c, which was the only place that format.h was actually used. Cc: Jan Engelhardt <jengelh@linux01.gwdg.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Update copyright, tidy up incore.hSteven Whitehouse2006-09-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | As per comments from Jan Engelhardt <jengelh@linux01.gwdg.de> this updates the copyright message to say "version" in full rather than "v.2". Also incore.h has been updated to remove forward structure declarations which are not required. The gfs2_quota_lvb structure has now had endianess annotations added to it. Also quota.c has been updated so that we now store the lvb data locally in endian independant format to avoid needing a structure in host endianess too. As a result the endianess conversions are done as required at various points and thus the conversion routines in lvb.[ch] are no longer required. I've moved the one remaining constant in lvb.h thats used into lm.h and removed the unused lvb.[ch]. I have not changed the HIF_ constants. That is left to a later patch which I hope will unify the gh_flags and gh_iflags fields of the struct gfs2_holder. Cc: Jan Engelhardt <jengelh@linux01.gwdg.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Tidy up in various filesSteven Whitehouse2006-07-311-15/+5
| | | | | | | Tidy up some files and remove an unused routine in meta_io.h. Also added a bit of extra debugging in meta_io.h. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [PATCH] patch to init di_payload_format field in gfs2_dinodeAbhijith Das2006-07-111-0/+1
| | | | | | | | A missing initialisation when creating a new on disk inode. Signed-off-by: Abhijith Das <adas@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Add generation numberSteven Whitehouse2006-07-111-26/+20
| | | | | | | | | | | | | | | | | This adds a generation number for the eventual use of NFS to the ondisk inode. Its backward compatible with the current code since it doesn't really matter what the generation number is to start with, and indeed since its set to zero, due to it being taken from padding in both the inode and rgrp header, it should be fine. The eventual plan is to use this rather than no_formal_ino in the NFS filehandles. At that point no_formal_ino will be unused. At the same time we also add a releasepages call back to the "normal" address space for gfs2 inodes. Also I've removed a one-linrer function thats not required any more. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fixes to scanning of glocks (again)Steven Whitehouse2006-07-061-0/+2
| | | | | | | | | | | This really is the correct fix this time. We just ignore all glocks associated with inodes until the inodes are pushed from the inode cache. At that point the glocks are queued for reclaim, so we don't need to do it here. Also fix one or two other minor bugs. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Remove unused flagSteven Whitehouse2006-06-221-1/+0
| | | | | | The flag GIF_MIN_INIT is no longer used or required. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Remove gfs2_repermissionSteven Whitehouse2006-06-221-8/+3
| | | | | | | gfs2_repermission is just a wrapper for permission, so remove it and call permission directly where required. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix unlinked file handlingSteven Whitehouse2006-06-141-633/+176
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the way we have been dealing with unlinked, but still open files. It removes all limits (other than memory for inodes, as per every other filesystem) on numbers of these which we can support on GFS2. It also means that (like other fs) its the responsibility of the last process to close the file to deallocate the storage, rather than the person who did the unlinking. Note that with GFS2, those two events might take place on different nodes. Also there are a number of other changes: o We use the Linux inode subsystem as it was intended to be used, wrt allocating GFS2 inodes o The Linux inode cache is now the point which we use for local enforcement of only holding one copy of the inode in core at once (previous to this we used the glock layer). o We no longer use the unlinked "special" file. We just ignore it completely. This makes unlinking more efficient. o We now use the 4th block allocation state. The previously unused state is used to track unlinked but still open inodes. o gfs2_inoded is no longer needed o Several fields are now no longer needed (and removed) from the in core struct gfs2_inode o Several fields are no longer needed (and removed) from the in core superblock There are a number of future possible optimisations and clean ups which have been made possible by this patch. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] glock debugging and inode cache changesSteven Whitehouse2006-05-181-37/+21
| | | | | | | | | | | | | | | This adds some extra debugging to glock.c and changes inode.c's deallocation code to call the debugging code at a suitable moment. I'm chasing down a particular bug to do with deallocation at the moment and the code can go again once the bug is fixed. Also this includes the first part of some changes to unify the Linux struct inode and GFS2's struct gfs2_inode. This transformation will happen in small parts over the next short period. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Update copyright date to 2006Steven Whitehouse2006-05-181-1/+1
| | | | Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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