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* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398Thomas Gleixner2019-06-051-4/+1
| | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): this copyrighted material is made available to anyone wishing to use modify copy or redistribute it subject to the terms and conditions of the gnu general public license version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 44 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081038.653000175@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* gfs2: using posix_acl_xattr_size instead of posix_acl_to_xattrChengguang Xu2018-07-241-4/+2
| | | | | | | | | | It seems better to get size by calling posix_acl_xattr_size() instead of calling posix_acl_to_xattr() with NULL buffer argument. posix_acl_xattr_size() never returns 0, so remove the unnecessary check. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
* gfs2: Always update inode ctime in set_aclAndreas Gruenbacher2017-09-251-0/+1
| | | | | | | | | | | | | Three-entry POSIX ACLs can be stored in the file mode permission bits, with no need to store them in extended attributes. When a process sets such a minimal ACL, the kernel updates the file mode like chmod does, and removes any existing extended attributes for that ACL. Make sure the ctime is always updated in that case. Fixes xfstest generic/307. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Bob Peterson <rpeterso@redhat.com>
* gfs2: preserve i_mode if __gfs2_set_acl() failsErnesto A. Fernández2017-08-311-5/+8
| | | | | | | | | | | | | | | | When changing a file's acl mask, __gfs2_set_acl() will first set the group bits of i_mode to the value of the mask, and only then set the actual extended attribute representing the new acl. If the second part fails (due to lack of space, for example) and the file had no acl attribute to begin with, the system will from now on assume that the mask permission bits are actual group permission bits, potentially granting access to the wrong users. Prevent this by only changing the inode mode after the acl has been set. Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com> Signed-off-by: Bob Peterson <rpeterso@redhat.com>
* gfs2: Don't clear SGID when inheriting ACLsJan Kara2017-07-191-13/+14
| | | | | | | | | | | | | | | | | | When new directory 'DIR1' is created in a directory 'DIR0' with SGID bit set, DIR1 is expected to have SGID bit set (and owning group equal to the owning group of 'DIR0'). However when 'DIR0' also has some default ACLs that 'DIR1' inherits, setting these ACLs will result in SGID bit on 'DIR1' to get cleared if user is not member of the owning group. Fix the problem by moving posix_acl_update_mode() out of __gfs2_set_acl() into gfs2_set_acl(). That way the function will not be called when inheriting ACLs which is what we want as it prevents SGID bit clearing and the mode has been properly set by posix_acl_create() anyway. Fixes: 073931017b49d9458aa351605b43a7e34598caef Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Bob Peterson <rpeterso@redhat.com>
* posix_acl: Clear SGID bit when setting file permissionsJan Kara2016-09-221-9/+3
| | | | | | | | | | | | | | When file permissions are modified via chmod(2) and the user is not in the owning group or capable of CAP_FSETID, the setgid bit is cleared in inode_change_ok(). Setting a POSIX ACL via setxattr(2) sets the file permissions as well as the new ACL, but doesn't clear the setgid bit in a similar way; this allows to bypass the check in chmod(2). Fix that. References: CVE-2016-7097 Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
* gfs2: Switch to generic xattr handlersAl Viro2016-05-121-11/+47
| | | | | | | | | | | | | | | Switch to the generic xattr handlers and take the necessary glocks at the layer below. The following are the new xattr "entry points"; they are called with the glock held already in the following cases: gfs2_xattr_get: From SELinux, during lookups. gfs2_xattr_set: The glock is never held. gfs2_get_acl: From gfs2_create_inode -> posix_acl_create and gfs2_setattr -> posix_acl_chmod. gfs2_set_acl: From gfs2_setattr -> posix_acl_chmod. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* posix acls: Remove duplicate xattr name definitionsAndreas Gruenbacher2015-12-061-2/+2
| | | | | | | | | Remove POSIX_ACL_XATTR_{ACCESS,DEFAULT} and GFS2_POSIX_ACL_{ACCESS,DEFAULT} and replace them with the definitions in <include/uapi/linux/xattr.h>. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Reviewed-by: James Morris <james.l.morris@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* GFS2: gfs2_set_acl(): Cache "no acl" as wellAndreas Gruenbacher2015-03-181-5/+1
| | | | | | | | | | | When removing a default acl or setting an access acl that is entirely represented in the file mode, we end up with acl == NULL in gfs2_set_acl(). In that case, bring gfs2 in line with other file systems and cache the NULL acl with set_cached_acl() instead of invalidating the cache with forget_cached_acl(). Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Bob Peterson <rpeterso@redhat.com>
* GFS2: Fix crash during ACL deletion in acl max entry check in gfs2_set_acl()Andrew Elble2015-02-101-1/+1
| | | | | | | | | Fixes: e01580bf9e ("gfs2: use generic posix ACL infrastructure") Reported-by: Eric Meddaugh <etmsys@rit.edu> Tested-by: Eric Meddaugh <etmsys@rit.edu> Signed-off-by: Andrew Elble <aweits@rit.edu> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: inline function gfs2_set_modeBob Peterson2014-03-191-15/+4
| | | | | | | | | | | Here is a revised patch based on Steve's feedback: This patch eliminates function gfs2_set_mode which was only called in one place, and always returned 0. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Increase the max number of ACLsBob Peterson2014-03-191-1/+1
| | | | | | | | | | | This patch increases the maximum number of ACLs from 25 to 300 for a 4K block size. The value is adjusted accordingly if the block size is smaller. Note that this is an arbitrary limit with a performance tradeoff, and that the physical limit is slightly over 500. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: return -E2BIG if hit the maximum limits of ACLsJie Liu2014-03-061-1/+1
| | | | | | | | | | | | Return -E2BIG rather than -EINVAL if hit the maximum size limits of ACLs, as the former errno is consistent with VFS xattr syscalls. This is pointed out by Dave Chinner in previous discussion thread: http://www.spinics.net/lists/linux-fsdevel/msg71125.html Signed-off-by: Jie Liu <jeff.liu@oracle.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* gfs2: use generic posix ACL infrastructureChristoph Hellwig2014-01-251-204/+30
| | | | | | | | | This contains some major refactoring for the create path so that inodes are created with the right mode to start with instead of fixing it up later. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* fs: make posix_acl_create more usefulChristoph Hellwig2014-01-251-1/+1
| | | | | | | | | | Rename the current posix_acl_created to __posix_acl_create and add a fully featured helper to set up the ACLs on file creation that uses get_acl(). Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* fs: make posix_acl_chmod more usefulChristoph Hellwig2014-01-251-1/+1
| | | | | | | | | | Rename the current posix_acl_chmod to __posix_acl_chmod and add a fully featured ACL chmod helper that uses the ->set_acl inode operation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* gfs2: Use uid_eq and gid_eq where appropriateEric W. Biederman2013-02-131-1/+1
| | | | | | | | | | Where kuid_t values are compared use uid_eq and where kgid_t values are compared use gid_eq. This is unfortunately necessary because of the type safety that keeps someone from accidentally mixing kuids and kgids with other types. Cc: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* userns: Pass a userns parameter into posix_acl_to_xattr and posix_acl_from_xattrEric W. Biederman2012-09-181-7/+7
| | | | | | | | | | | | | | | | | | | | | | | - Pass the user namespace the uid and gid values in the xattr are stored in into posix_acl_from_xattr. - Pass the user namespace kuid and kgid values should be converted into when storing uid and gid values in an xattr in posix_acl_to_xattr. - Modify all callers of posix_acl_from_xattr and posix_acl_to_xattr to pass in &init_user_ns. In the short term this change is not strictly needed but it makes the code clearer. In the longer term this change is necessary to be able to mount filesystems outside of the initial user namespace that natively store posix acls in the linux xattr format. Cc: Theodore Tso <tytso@mit.edu> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* GFS2: Fix sgid propagation when using ACLsSteven Whitehouse2012-05-041-9/+3
| | | | | | | | | | | This cleans up the mode setting code when creating inodes. The SGID bit was being reset by setattr_copy() when the user creating a subdirectory was not in the owning group. When ACLs are in use this SGID bit should have been propagated if the ACL allows creation of a subdirectory. GFS2's behaviour now matches that of the other ACL supporting filesystems in this regard. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: We only need one ACL getting functionSteven Whitehouse2011-11-231-9/+5
| | | | | | | There is no need to have two versions of this function with slightly different arguments. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Use ->dirty_inode()Steven Whitehouse2011-10-211-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | The aim of this patch is to use the newly enhanced ->dirty_inode() super block operation to deal with atime updates, rather than piggy backing that code into ->write_inode() as is currently done. The net result is a simplification of the code in various places and a reduction of the number of gfs2_dinode_out() calls since this is now implied by ->dirty_inode(). Some of the mark_inode_dirty() calls have been moved under glocks in order to take advantage of then being able to avoid locking in ->dirty_inode() when we already have suitable locks. One consequence is that generic_write_end() now correctly deals with file size updates, so that we do not need a separate check for that afterwards. This also, indirectly, means that fdatasync should work correctly on GFS2 - the current code always syncs the metadata whether it needs to or not. Has survived testing with postmark (with and without atime) and also fsx. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* switch posix_acl_equiv_mode() to umode_t *Al Viro2011-08-011-1/+1
| | | | | | ... so that &inode->i_mode could be passed to it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* switch posix_acl_create() to umode_t *Al Viro2011-08-011-2/+2
| | | | | | so we can pass &inode->i_mode to it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* fs: take the ACL checks to common codeChristoph Hellwig2011-07-251-23/+2
| | | | | | | | | Replace the ->check_acl method with a ->get_acl method that simply reads an ACL from disk after having a cache miss. This means we can replace the ACL checking boilerplate code with a single implementation in namei.c. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* kill boilerplates around posix_acl_create_masq()Al Viro2011-07-251-10/+4
| | | | | | | | | new helper: posix_acl_create(&acl, gfp, mode_p). Replaces acl with modified clone, on failure releases acl and replaces with NULL. Returns 0 or -ve on error. All callers of posix_acl_create_masq() switched. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* kill boilerplate around posix_acl_chmod_masq()Al Viro2011-07-251-18/+12
| | | | | | | | | new helper: posix_acl_chmod(&acl, gfp, mode). Replaces acl with modified clone or with NULL if that has failed; returns 0 or -ve on error. All callers of posix_acl_chmod_masq() switched to that - they'd been doing exactly the same thing. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* vfs: move ACL cache lookup into generic codeLinus Torvalds2011-07-251-6/+0
| | | | | | | | | | | | | | This moves logic for checking the cached ACL values from low-level filesystems into generic code. The end result is a streamlined ACL check that doesn't need to load the inode->i_op->check_acl pointer at all for the common cached case. The filesystems also don't need to check for a non-blocking RCU walk case in their acl_check() functions, because that is all handled at a VFS layer. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ->permission() sanitizing: don't pass flags to ->check_acl()Al Viro2011-07-201-1/+1
| | | | | | not used in the instances anymore. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ->permission() sanitizing: pass MAY_NOT_BLOCK to ->check_acl()Al Viro2011-07-201-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* GFS2: Post-VFS scale update for RCU path walkSteven Whitehouse2011-01-211-2/+5
| | | | | | | | | | We can allow a few more cases to use RCU path walking than originally allowed. It should be possible to also enable RCU path walking when the glock is already cached. Thats a bit more complicated though, so left for a future patch. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Nick Piggin <npiggin@gmail.com>
* fs: provide rcu-walk aware permission i_opsNick Piggin2011-01-071-1/+4
| | | | Signed-off-by: Nick Piggin <npiggin@kernel.dk>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixesLinus Torvalds2010-05-251-0/+4
|\ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes: GFS2: Fix permissions checking for setflags ioctl() GFS2: Don't "get" xattrs for ACLs when ACLs are turned off GFS2: Rework reclaiming unlinked dinodes
| * GFS2: Don't "get" xattrs for ACLs when ACLs are turned offSteven Whitehouse2010-05-211-0/+4
| | | | | | | | | | | | | | | | This is to match ext3 behaviour. We should not allow getting of xattrs relating to ACLs when ACLs are turned off. Reported-by: Nate Straz <nstraz@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* | gfs: constify xattr_handlerStephen Hemminger2010-05-211-1/+1
|/ | | | | Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* sanitize xattr handler prototypesChristoph Hellwig2009-12-161-6/+10
| | | | | | | | | | | | | | | | | | | | | Add a flags argument to struct xattr_handler and pass it to all xattr handler methods. This allows using the same methods for multiple handlers, e.g. for the ACL methods which perform exactly the same action for the access and default ACLs, just using a different underlying attribute. With a little more groundwork it'll also allow sharing the methods for the regular user/trusted/secure handlers in extN, ocfs2 and jffs2 like it's already done for xfs in this patch. Also change the inode argument to the handlers to a dentry to allow using the handlers mechnism for filesystems that require it later, e.g. cifs. [with GFS2 bits updated by Steven Whitehouse <swhiteho@redhat.com>] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* GFS2: Add cached ACLs supportSteven Whitehouse2009-12-031-2/+25
| | | | | | | | | | The other patches in this series have been building towards being able to support cached ACLs like other filesystems. The only real difference with GFS2 is that we have to invalidate the cache when we drop a glock, but that is dealt with in earlier patches. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Clean up ACLsSteven Whitehouse2009-12-031-81/+83
| | | | | | | | | To prepare for support for caching of ACLs, this cleans up the GFS2 ACL support by pushing the xattr code back into xattr.c and changing the acl_get function into one which only returns ACLs so that we can drop the caching function into it shortly. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Use gfs2_set_mode() instead of munge_mode()Steven Whitehouse2009-12-031-35/+11
| | | | | | | These two functions do the same thing, so lets only use one of them. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Fix up system xattrsSteven Whitehouse2009-12-031-55/+115
| | | | | | | | | | This code has been shamelessly stolen from XFS at the suggestion of Christoph Hellwig. I've not added support for cached ACLs so far... watch for that in a later patch, although this is designed in such a way that they should be easy to add. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Christoph Hellwig <hch@infradead.org>
* GFS2: Rename eattr.[ch] as xattr.[ch]Steven Whitehouse2009-08-261-1/+1
| | | | | | | Use the more conventional name for the extended attribute support code. Update all the places which care. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Clean up of extended attribute supportSteven Whitehouse2009-08-261-59/+45
| | | | | | | | | | | | | | | | | | | | | This has been on my list for some time. We need to change the way in which we handle extended attributes to allow faster file creation times (by reducing the number of transactions required) and the extended attribute code is the main obstacle to this. In addition to that, the VFS provides a way to demultiplex the xattr calls which we ought to be using, rather than rolling our own. This patch changes the GFS2 code to use that VFS feature and as a result the code shrinks by a couple of hundred lines or so, and becomes easier to read. I'm planning on doing further clean up work in this area, but this patch is a good start. The cleaned up code also uses the more usual "xattr" shorthand, I plan to eliminate the use of "eattr" eventually and in the mean time it serves as a flag as to which bits of the code have been updated. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* New helper - current_umask()Al Viro2009-03-311-1/+1
| | | | | | | current->fs->umask is what most of fs_struct users are doing. Put that into a helper function. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* GFS2: Merge lock_dlm module into GFS2Steven Whitehouse2009-03-241-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is the big patch that I've been working on for some time now. There are many reasons for wanting to make this change such as: o Reducing overhead by eliminating duplicated fields between structures o Simplifcation of the code (reduces the code size by a fair bit) o The locking interface is now the DLM interface itself as proposed some time ago. o Fewer lookups of glocks when processing replies from the DLM o Fewer memory allocations/deallocations for each glock o Scope to do further optimisations in the future (but this patch is more than big enough for now!) Please note that (a) this patch relates to the lock_dlm module and not the DLM itself, that is still a separate module; and (b) that we retain the ability to build GFS2 as a standalone single node filesystem with out requiring the DLM. This patch needs a lot of testing, hence my keeping it I restarted my -git tree after the last merge window. That way, this has the maximum exposure before its merged. This is (modulo a few minor bug fixes) the same patch that I've been posting on and off the the last three months and its passed a number of different tests so far. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* GFS2: Move di_eattr into "proper" inodeSteven Whitehouse2009-01-051-1/+1
| | | | | | | 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] fix GFP_KERNEL misusesJosef Bacik2008-04-101-3/+3
| | | | | | | | | | | There are several places where GFP_KERNEL allocations happen under a glock, which will result in hangs if we're under memory pressure and go to re-enter the fs in order to flush stuff out. This patch changes the culprits to GFS_NOFS to keep this problem from happening. Thank you, Signed-off-by: Josef Bacik <jbacik@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid checkSatyam Sharma2007-07-171-1/+1
| | | | | | | | | | | | | | | | | | | | Introduce is_owner_or_cap() macro in fs.h, and convert over relevant users to it. This is done because we want to avoid bugs in the future where we check for only effective fsuid of the current task against a file's owning uid, without simultaneously checking for CAP_FOWNER as well, thus violating its semantics. [ XFS uses special macros and structures, and in general looked ... untouchable, so we leave it alone -- but it has been looked over. ] The (current->fsuid != inode->i_uid) check in generic_permission() and exec_permission_lite() is left alone, because those operations are covered by CAP_DAC_OVERRIDE and CAP_DAC_READ_SEARCH. Similarly operations falling under the purview of CAP_CHOWN and CAP_LEASE are also left alone. Signed-off-by: Satyam Sharma <ssatyam@cse.iitk.ac.in> Cc: Al Viro <viro@ftp.linux.org.uk> Acked-by: Serge E. Hallyn <serge@hallyn.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [GFS2] Remove gfs2_check_acl()Steven Whitehouse2006-11-301-17/+2
| | | | | | | | | 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] Shrink gfs2_inode (4) - di_uid/di_gidSteven Whitehouse2006-11-301-1/+1
| | | | | | | 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 Whitehouse2006-11-301-8/+8
| | | | | | | 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] Change argument of gfs2_dinode_outSteven Whitehouse2006-11-301-1/+1
| | | | | | | | | | 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>
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