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path: root/fs/gfs2/ops_inode.c
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* Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p)David Howells2008-02-07
| | | | | | | | | | Convert instances of ERR_PTR(PTR_ERR(p)) to ERR_CAST(p) using: perl -spi -e 's/ERR_PTR[(]PTR_ERR[(](.*)[)][)]/ERR_CAST(\1)/' `grep -rl 'ERR_PTR[(]*PTR_ERR' fs crypto net security` Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [GFS2] Reduce inode size by moving i_alloc out of lineSteven Whitehouse2008-01-25
| | | | | | | | | | | | | | | | | It is possible to reduce the size of GFS2 inodes by taking the i_alloc structure out of the gfs2_inode. This patch allocates the i_alloc structure whenever its needed, and frees it afterward. This decreases the amount of low memory we use at the expense of requiring a memory allocation for each page or partial page that we write. A quick test with postmark shows that the overhead is not measurable and I also note that OCFS2 use the same approach. In the future I'd like to solve the problem by shrinking down the size of the members of the i_alloc structure, but for now, this reduces the immediate problem of using too much low-memory on x86 and doesn't add too much overhead. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix problems relating to execution of files on GFS2Steven Whitehouse2008-01-25
| | | | | | | | | | | | | This patch fixes a couple of problems which affected the execution of files on GFS2. The first is that there was a corner case where inodes were not always uptodate at the point at which permissions checks were being carried out, this was resulting in refusal of execute permission, but only on the first lookup, subsequent requests worked correctly. The second was a problem relating to incorrect updating of file sizes which was introduced with the write_begin/end code for GFS2 a little while back. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Abhijith Das <adas@redhat.com>
* [GFS2] Clean up journaled data writingSteven Whitehouse2007-10-10
| | | | | | | | | | | This patch cleans up the code for writing journaled data into the log. It also removes the need to allocate a small "tag" structure for each block written into the log. Instead we just keep count of the outstanding I/O so that we can be sure that its all been written at the correct time. Another result of this patch is that a number of ll_rw_block() calls have become submit_bh() calls, closing some races at the same time. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Correct lock ordering in unlinkSteven Whitehouse2007-10-10
| | | | | | | This patch corrects the lock ordering in unlink to be the same as that in the rest of GFS2, i.e. parent -> child -> rgrp. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] GFS2 not checking pointer on create when running under nfsdSteve French2007-10-10
| | | | | | | | | When looking at an unrelated problem, I noticed that nfsd does not set nameidata pointer on create (ie nd is NULL). This should cause an oops in some cases in which when NFSd is mounted over GFS2. Signed-off-by: Steve French <sfrench@us.ibm.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] inode size inconsistencyWendy Cheng2007-07-09
| | | | | | | | | | | | | | | | | | This should have been part of the NFS patch #1 but somehow I missed it when packaging the patches. It is not a critical issue as the others (I hope). RHEL 5.1 31.el5 kernel runs fine without this change. Our truncate code is chopped into two parts, one for vfs inode changes (in vmtruncate()) and one of gfs inode (in gfs2_truncatei()). These two operatons are, unfortunately, not atomic. So it could happens that vmtruncate() succeeds (inode->i_size is changed) but gfs2_truncatei fails (say kernel temporarily out of memory). This would leave gfs inode i_di.di_size out of sync with vfs inode i_size. It will later confuse gfs2_commit_write() if a write is issued. Last time I checked, it will cause file corruption. Signed-off-by: S. Wendy Cheng <wcheng@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix typo in rename of directoriesSteven Whitehouse2007-07-09
| | | | | | | A typo caused us to pass a NULL pointer when renaming directories. It was accidentally introduced in: [GFS2] Clean up inode number handling Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Add nanosecond timestamp featureSteven Whitehouse2007-07-09
| | | | | | | | | | | This adds a nanosecond timestamp feature to the GFS2 filesystem. Due to the way that the on-disk format works, older filesystems will just appear to have this field set to zero. When mounted by an older version of GFS2, the filesystem will simply ignore the extra fields so that it will again appear to have whole second resolution, so that its trivially backward compatible. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix sign problem in quota/statfs and cleanup _host structuresSteven Whitehouse2007-07-09
| | | | | | | | | | | | | | | | | | | | | | | | This patch fixes some sign issues which were accidentally introduced into the quota & statfs code during the endianess annotation process. Also included is a general clean up which moves all of the _host structures out of gfs2_ondisk.h (where they should not have been to start with) and into the places where they are actually used (often only one place). Also those _host structures which are not required any more are removed entirely (which is the eventual plan for all of them). The conversion routines from ondisk.c are also moved into the places where they are actually used, which for almost every one, was just one single place, so all those are now static functions. This also cleans up the end of gfs2_ondisk.h which no longer needs the #ifdef __KERNEL__. The net result is a reduction of about 100 lines of code, many functions now marked static plus the bug fixes as mentioned above. For good measure I ran the code through sparse after making these changes to check that there are no warnings generated. This fixes Red Hat bz #239686 Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Clean up inode number handlingSteven Whitehouse2007-07-09
| | | | | | | | | | | | | | | | | | | | | | | This patch cleans up the inode number handling code. The main difference is that instead of looking up the inodes using a struct gfs2_inum_host we now use just the no_addr member of this structure. The tests relating to no_formal_ino can then be done by the calling code. This has advantages in that we want to do different things in different code paths if the no_formal_ino doesn't match. In the NFS patch we want to return -ESTALE, but in the ->lookup() path, its a bug in the fs if the no_formal_ino doesn't match and thus we can withdraw in this case. In order to later fix bz #201012, we need to be able to look up an inode without knowing no_formal_ino, as the only information that is known to us is the on-disk location of the inode in question. This patch will also help us to fix bz #236099 at a later date by cleaning up a lot of the code in that area. There are no user visible changes as a result of this patch and there are no changes to the on-disk format either. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [PATCH] remove many unneeded #includes of sched.hTim Schmielau2007-02-14
| | | | | | | | | | | | | | | | | | | | | | | | After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] mark struct inode_operations const 2Arjan van de Ven2007-02-12
| | | | | | | | | | | Many struct inode_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [GFS2] Fix unlink deadlocksRussell Cattelan2007-02-05
| | | | | | | | | | | | | | | | | | 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 Whitehouse2007-02-05
| | | | | | | | | 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 Sandeen2007-02-05
| | | | | | | | | | | | | | | | | | 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] Fix gfs2_rename deadlockS. Wendy Cheng2007-02-05
| | | | | | | | | | | | | 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] Fix change nlink deadlockS. Wendy Cheng2007-02-05
| | | | | | | | | | | | | | | | | 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] Remove gfs2_check_acl()Steven Whitehouse2006-11-30
| | | | | | | | | As pointed out by Adrian Bunk, the gfs2_check_acl() function is no longer used. This patch removes it and renamed gfs2_check_acl_locked() to gfs2_check_acl() since we only need one variant of that function now. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Adrian Bunk <bunk@stusta.de>
* [GFS2] Fix recursive locking in gfs2_getattrSteven Whitehouse2006-11-30
| | | | | | | | | | The readdirplus NFS operation can result in gfs2_getattr being called with the glock already held. In this case we do not want to try and grab the lock again. This fixes Red Hat bugzilla #215727 Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix recursive locking in gfs2_permissionSteven Whitehouse2006-11-30
| | | | | | | | | | | | Since gfs2_permission may be called either from the VFS (in which case we need to obtain a shared glock) or from GFS2 (in which case we already have a glock) we need to test to see whether or not a lock is required. The original test was buggy due to a potential race. This one should be safe. This fixes Red Hat bugzilla #217129 Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Shrink gfs2_inode (8) - i_vnSteven Whitehouse2006-11-30
| | | | | | | | 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 Whitehouse2006-11-30
| | | | | | | | | | 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 Whitehouse2006-11-30
| | | | | | | 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 Whitehouse2006-11-30
| | | | | | | | 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 Whitehouse2006-11-30
| | | | | | | 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 Whitehouse2006-11-30
| | | | | | | 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 Whitehouse2006-11-30
| | | | | | | | 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] Change argument to gfs2_dinode_printSteven Whitehouse2006-11-30
| | | | | | | | 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] Change argument of gfs2_dinode_outSteven Whitehouse2006-11-30
| | | | | | | | | | 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] Fix endian bug for de_typeSteven Whitehouse2006-10-03
| | | | | | Missing endian conversion for the de_type field. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Two redundant casts removedSteven Whitehouse2006-10-02
| | | | Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2/DLM] Fix trailing whitespaceSteven Whitehouse2006-09-25
| | | | | | | 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 Nitto2006-09-19
| | | | | | | | | | | | | | | 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] More code style updatesSteven Whitehouse2006-09-04
| | | | | | | | | As per Jan Engelhardt's fifth email. This has most of the changes recommended, which is the removal of casts which are not required, some indenting fixes and similar. Cc: Jan Engelhardt <jengelh@linux01.gwdg.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Change all types to uX styleSteven Whitehouse2006-09-04
| | | | | | | 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] Align all labels against LH sideSteven Whitehouse2006-09-04
| | | | | | This makes everything consistent. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Update copyright, tidy up incore.hSteven Whitehouse2006-09-01
| | | | | | | | | | | | | | | | | | | | | | | 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] Remove page.[ch]Steven Whitehouse2006-07-26
| | | | | | | | The remaining routines in page.c were all only used in one other file, so they are now moved into the files where they are referenced and made static. Thus page.[ch] are no longer required. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fixes to scanning of glocks (again)Steven Whitehouse2006-07-06
| | | | | | | | | | | 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] Eliminate one instance of __GFP_NOFAILSteven Whitehouse2006-06-24
| | | | | | | | This removes one instance of GFP_NOFAIL from the glock callback function. It also fixes a bug where a , was used at a line end rather than ; causing unintended results. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Remove gfs2_repermissionSteven Whitehouse2006-06-22
| | | | | | | 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 double locking problem in renameSteven Whitehouse2006-06-21
| | | | | | | | | The rename inode operation was trying to lock the same inode twice in the case of renaming with the source and destination directories the same. We now test for this and just lock once. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Remove debugging printksSteven Whitehouse2006-06-19
| | | | | | | A few of my printks slipped through last time. Also fix a couple of minor bugs. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Fix unlinked file handlingSteven Whitehouse2006-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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] Update copyright date to 2006Steven Whitehouse2006-05-18
| | | | Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Remove semaphore.h from C filesSteven Whitehouse2006-05-18
| | | | | | | We no longer use semaphores, everything has been converted to mutex or rwsem, so we don't need to include this header any more. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Drop log lock on I/O error & tidy upSteven Whitehouse2006-05-18
| | | | | | | | | This patch drops the log spinlock when an I/O error occurs to avoid any possible problems in case of blocking or recursion in the I/O error routine. It also has a few cosmetic changes to tidy up various other files. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Use vmalloc() in dir codeSteven Whitehouse2006-04-18
| | | | | | | | | | | | When allocating memory to sort directory entries, use vmalloc() rather than kmalloc() since for larger directories, the required size can easily be graeter than the 128k maximum of kmalloc(). Also adding the first steps towards getting the AOP_TRUNCATED_PAGE return code get in the glock code by flagging all places where we request a glock and we are holding a page lock. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* [GFS2] Further updates to dir and logging codeSteven Whitehouse2006-03-28
| | | | | | | | | | | | | | | | | This reduces the size of the directory code by about 3k and gets readdir() to use the functions which were introduced in the previous directory code update. Two memory allocations are merged into one. Eliminates zeroing of some buffers which were never used before they were initialised by other data. There is still scope for further improvement in the directory code. On the logging side, a hand created mutex has been replaced by a standard Linux mutex in the log allocation code. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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