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2013-10-25cifs: rcu-delay unload_nls() and freeing sbiAl Viro2-2/+9
makes ->d_hash(), ->d_compare() and ->permission() safety in RCU mode independent from vfsmount_lock. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25autofs4: make freeing sbi rcu-delayedAl Viro2-9/+5
makes ->d_managed() safety in RCU mode independent from vfsmount_lock Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25adfs: delayed freeing of sbiAl Viro2-5/+7
makes ->d_hash() and ->d_compare() safety in RCU mode independent from vfsmount_lock. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25hpfs: make freeing sbi and codetables rcu-delayedAl Viro2-14/+15
makes ->d_hash() and ->d_compare() safety in RCU mode independent from vfsmount_lock Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25make freeing super_block rcu-delayedAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25vfs: introduce d_instantiate_no_diralias()Miklos Szeredi4-40/+32
...which just returns -EBUSY if a directory alias would be created. This is to be used by fuse mkdir to make sure that a buggy or malicious userspace filesystem doesn't do anything nasty. Previously fuse used a private mutex for this purpose, which can now go away. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
2013-10-25move taking vfsmount_lock down into prepend_path()Al Viro1-9/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25split __lookup_mnt() in two functionsAl Viro4-25/+30
Instead of passing the direction as argument (and checking it on every step through the hash chain), just have separate __lookup_mnt() and __lookup_mnt_last(). And use the standard iterators... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25uninline destroy_super(), consolidate alloc_super()Al Viro1-120/+86
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25isofs: don't pass dentry to isofs_hash{i,}_common()Al Viro1-6/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25new helpers: lock_mount_hash/unlock_mount_hashAl Viro5-54/+64
aka br_write_{lock,unlock} of vfsmount_lock. Inlines in fs/mount.h, vfsmount_lock extern moved over there as well. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25don't bother with vfsmount_lock in mounts_poll()Al Viro1-4/+4
wake_up_interruptible/poll_wait provide sufficient barriers; just use ACCESS_ONCE() to fetch ns->event and that's it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25namespace.c: get rid of mnt_ghostsAl Viro3-18/+9
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25fold dup_mnt_ns() into its only surviving callerAl Viro1-30/+18
should've been done 6 years ago... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25mnt_set_expiry() doesn't need vfsmount_lockAl Viro1-2/+0
->mnt_expire is protected by namespace_sem Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25finish_automount() doesn't need vfsmount_lock for removal from expiry listAl Viro1-2/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25fs/namespace.c: bury long-dead defineAl Viro1-2/+0
MNT_WRITER_UNDERFLOW_LIMIT has been missed 4 years ago when it became unused. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25fold mntfree() into mntput_no_expire()Al Viro1-23/+16
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25do_remount(): pull touch_mnt_namespace() upAl Viro1-5/+1
... and don't bother with dropping and regaining vfsmount_lock Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25dup_mnt_ns(): get rid of pointless grabbing of vfsmount_lockAl Viro1-2/+0
mnt_list is protected by namespace_sem, not vfsmount_lock Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25fs_is_visible only needs namespace_sem held sharedAl Viro1-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25initialize namespace_sem staticallyAl Viro1-3/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25file->f_op is never NULL...Al Viro23-87/+67
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25consolidate the reassignments of ->f_op in ->open() instancesAl Viro1-2/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25put_mnt_ns(): use drop_collected_mounts()Al Viro1-5/+1
... rather than open-coding it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25ncpfs: switch to %p[dD]Al Viro2-43/+24
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25ubifs: switch to %pdAl Viro3-34/+29
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25nfsd: switch to %p[dD]Al Viro5-37/+31
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25nfs: use %p[dD] instead of open-coded (and often racy) equivalentsAl Viro11-186/+119
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25befs: split symlink iops in two - for short and long symlinks resp.Al Viro1-30/+31
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25new helper: kfree_put_link()Al Viro7-38/+14
duplicated to hell and back... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25libfs: get exports to definitions of objects being exported...Al Viro1-35/+34
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25ecryptfs: ->lower_path.dentry is never NULLAl Viro1-2/+1
... on anything found via ->d_fsdata Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25ecryptfs: get rid of ecryptfs_set_dentry_lower{,_mnt}Al Viro3-18/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25ecryptfs: don't leave RCU pathwalk immediatelyAl Viro2-15/+20
If the underlying dentry doesn't have ->d_revalidate(), there's no need to force dropping out of RCU mode. All we need for that is to make freeing ecryptfs_dentry_info RCU-delayed. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25ecryptfs: check DCACHE_OP_REVALIDATE instead of ->d_opAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-259p: make v9fs_cache_inode_{get,put,set}_cookie empty inlines for !9P_CACHEFSAl Viro4-12/+12
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-24eCryptfs: fix 32 bit corruption issueColin Ian King1-1/+1
Shifting page->index on 32 bit systems was overflowing, causing data corruption of > 4GB files. Fix this by casting it first. https://launchpad.net/bugs/1243636 Signed-off-by: Colin Ian King <colin.king@canonical.com> Reported-by: Lars Duesing <lars.duesing@camelotsweb.de> Cc: stable@vger.kernel.org # v3.11+ Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
2013-10-24xfs: split xfs_rtalloc.c for userspace sanityDave Chinner4-1248/+1292
xfs_rtalloc.c is partially shared with userspace. Split the file up into two parts - one that is kernel private and the other which is wholly shared with userspace. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-10-24xfs: decouple inode and bmap btree header filesDave Chinner73-583/+403
Currently the xfs_inode.h header has a dependency on the definition of the BMAP btree records as the inode fork includes an array of xfs_bmbt_rec_host_t objects in it's definition. Move all the btree format definitions from xfs_btree.h, xfs_bmap_btree.h, xfs_alloc_btree.h and xfs_ialloc_btree.h to xfs_format.h to continue the process of centralising the on-disk format definitions. With this done, the xfs inode definitions are no longer dependent on btree header files. The enables a massive culling of unnecessary includes, with close to 200 #include directives removed from the XFS kernel code base. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-10-24xfs: decouple log and transaction headersDave Chinner75-239/+276
xfs_trans.h has a dependency on xfs_log.h for a couple of structures. Most code that does transactions doesn't need to know anything about the log, but this dependency means that they have to include xfs_log.h. Decouple the xfs_trans.h and xfs_log.h header files and clean up the includes to be in dependency order. In doing this, remove the direct include of xfs_trans_reserve.h from xfs_trans.h so that we remove the dependency between xfs_trans.h and xfs_mount.h. Hence the xfs_trans.h include can be moved to the indicate the actual dependencies other header files have on it. Note that these are kernel only header files, so this does not translate to any userspace changes at all. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-10-23xfs: remove unused transaction callback variablesDave Chinner1-7/+0
We don't do callbacks at transaction commit time, no do we have any infrastructure to set up or run such callbacks, so remove the variables and typedefs for these operations. If we ever need to add callbacks, we can reintroduce the variables at that time. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-10-23xfs: split dquot buffer operations outDave Chinner8-266/+303
Parts of userspace want to be able to read and modify dquot buffers (e.g. xfs_db) so we need to split out the reading and writing of these buffers so it is easy to shared code with libxfs in userspace. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-10-23xfs: unify directory/attribute format definitionsDave Chinner33-426/+437
The on-disk format definitions for the directory and attribute structures are spread across 3 header files right now, only one of which is dedicated to defining on-disk structures and their manipulation (xfs_dir2_format.h). Pull all the format definitions into a single header file - xfs_da_format.h - and switch all the code over to point at that. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-10-23xfs: create a shared header file for format-related informationDave Chinner54-232/+289
All of the buffer operations structures are needed to be exported for xfs_db, so move them all to a common location rather than spreading them all over the place. They are verifying the on-disk format, so while xfs_format.h might be a good place, it is not part of the on disk format. Hence we need to create a new header file that we centralise these related definitions. Start by moving the bffer operations structures, and then also move all the other definitions that have crept into xfs_log_format.h and xfs_format.h as there was no other shared header file to put them in. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ben Myers <bpm@sgi.com>
2013-10-22UBIFS: remove unnecessary code in ubifs_garbage_collectwang.bo116@zte.com.cn1-2/+1
In ubifs_garbage_collect,local variable "space_before" calculate twice. In fact, at the beginning of the loop, there is no need to calculate this variable. Calculate it before call "ubifs_garbage_collect_leb" is enough. This patch just remove the unnecessary calculate code. Signed-off-by: wang bo <wang.bo116@zte.com.cn> Acked-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-10-22f2fs: introduce f2fs_kmem_cache_alloc to hide the unfailed, kmem cache ↵Gu Zheng4-41/+35
allocation Introduce the unfailed version of kmem_cache_alloc named f2fs_kmem_cache_alloc to hide the retry routine and make the code a bit cleaner. v2: Fix the wrong use of 'retry' tag pointed out by Gao feng. Use more neat code to remove redundant tag suggested by Haicheng Li. Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-10-22vfs: fix new kernel-doc warningsRandy Dunlap1-8/+7
Move kernel-doc notation to immediately before its function to eliminate kernel-doc warnings introduced by commit db14fc3abcd5 ("vfs: add d_walk()") Warning(fs/dcache.c:1343): No description found for parameter 'data' Warning(fs/dcache.c:1343): No description found for parameter 'dentry' Warning(fs/dcache.c:1343): Excess function parameter 'parent' description in 'check_mount' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Miklos Szeredi <mszeredi@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-10-22fs/namei.c: fix new kernel-doc warningRandy Dunlap1-1/+2
Add @path parameter to fix kernel-doc warning. Also fix a spello/typo. Warning(fs/namei.c:2304): No description found for parameter 'path' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-10-22f2fs: no need to check other dirty_segmap when the seg has been foundHaicheng Li1-3/+7
Because one dirty seg can only be mapped to one dirty_type. Otherwise, it's a bug. Signed-off-by: Haicheng Li <haicheng.li@linux.intel.com> [Jaegeuk Kim: modify a comment related to this patch] Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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