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2012-06-22hfsplus: fix bless ioctl when used with hardlinksMatthew Garrett1-2/+7
commit 7dea9665fee828fb56db3bae5b9685d9fa006d33 upstream. HFS+ doesn't really implement hard links - instead, hardlinks are indicated by a magic file type which refers to an indirect node in a hidden directory. The spec indicates that stat() should return the inode number of the indirect node, but it turns out that this doesn't satisfy the firmware when it's looking for a bootloader - it wants the catalog ID of the hardlink file instead. Fix up this case. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-22hfsplus: fix overflow in sector calculations in hfsplus_submit_bioJanne Kalliomäki1-1/+1
commit a6dc8c04218eb752ff79cdc24a995cf51866caed upstream. The variable io_size was unsigned int, which caused the wrong sector number to be calculated after aligning it. This then caused mount to fail with big volumes, as backup volume header information was searched from a wrong sector. Signed-off-by: Janne Kalliomäki <janne@tuxera.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-04hfsplus: Fix potential buffer overflowsGreg Kroah-Hartman2-0/+15
Commit ec81aecb2966 ("hfs: fix a potential buffer overflow") fixed a few potential buffer overflows in the hfs filesystem. But as Timo Warns pointed out, these changes also need to be made on the hfsplus filesystem as well. Reported-by: Timo Warns <warns@pre-sense.de> Acked-by: WANG Cong <amwang@redhat.com> Cc: Alexey Khoroshilov <khoroshilov@ispras.ru> Cc: Miklos Szeredi <mszeredi@suse.cz> Cc: Sage Weil <sage@newdream.net> Cc: Eugene Teo <eteo@redhat.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Dave Anderson <anderson@redhat.com> Cc: stable <stable@vger.kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-20hfsplus: add an ioctl to bless filesMatthew Garrett2-0/+39
Making an hfsplus partition bootable requires the ability to "bless" a file by putting its inode number in the volume header. Doing this from userspace on a mounted filesystem is impractical since the kernel will write back the original values on unmount. Add an ioctl to allow userspace to update the volume header information based on the target file. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20hfsplus: change finder_info to u32Matthew Garrett1-1/+1
The finder_info block in the hfsplus volume header is currently defined as an array of 8 bit values, but TN1150 defines it as being an array of 32 bit values. Fix for convenience. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20hfsplus: initialise userflagsMatthew Garrett1-0/+2
The userflags field was being written to the filesystem without being initialised. Make sure it's clear, since otherwise files end up with garbage attributes. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20hfsplus: switch to d_make_root()Al Viro1-8/+9
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-10hfsplus: creation of hidden dir on mount can failAl Viro1-2/+9
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-06vfs: switch ->show_options() to struct dentry *Al Viro2-3/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03hfsplus: propagate umode_tAl Viro2-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch ->mknod() to umode_tAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch ->create() to umode_tAl Viro1-1/+1
vfs_create() ignores everything outside of 16bit subset of its mode argument; switching it to umode_t is obviously equivalent and it's the only caller of the method Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch vfs_mkdir() and ->mkdir() to umode_tAl Viro1-1/+1
vfs_mkdir() gets int, but immediately drops everything that might not fit into umode_t and that's the only caller of ->mkdir()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: fix the stupidity with i_dentry in inode destructorsAl Viro1-1/+0
Seeing that just about every destructor got that INIT_LIST_HEAD() copied into it, there is no point whatsoever keeping this INIT_LIST_HEAD in inode_init_once(); the cost of taking it into inode_init_always() will be negligible for pipes and sockets and negative for everything else. Not to mention the removal of boilerplate code from ->destroy_inode() instances... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03vfs: mnt_drop_write_file()Al Viro1-1/+1
new helper (wrapper around mnt_drop_write()) to be used in pair with mnt_want_write_file(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch a bunch of places to mnt_want_write_file()Al Viro1-1/+1
it's both faster (in case when file has been opened for write) and cleaner. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-02filesystems: add set_nlink()Miklos Szeredi1-5/+5
Replace remaining direct i_nlink updates with a new set_nlink() updater function. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Tested-by: Toshiyuki Okajima <toshi.okajima@jp.fujitsu.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2011-11-02filesystems: add missing nlink wrappersMiklos Szeredi1-2/+2
Replace direct i_nlink updates with the respective updater function (inc_nlink, drop_nlink, clear_nlink, inode_dec_link_count). Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
2011-09-15hfsplus: fix filesystem size checksChristoph Hellwig1-3/+8
generic_check_addressable can't deal with hfsplus's larger than page size allocation blocks, so simply opencode the checks that we actually need in hfsplus_fill_super. Signed-off-by: Christoph Hellwig <hch@tuxera.com> Reported-by: Pavel Ivanov <paivanof@gmail.com> Tested-by: Pavel Ivanov <paivanof@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-15hfsplus: Fix kfree of wrong pointers in hfsplus_fill_super() error pathSeth Forshee2-4/+4
Commit 6596528e391a ("hfsplus: ensure bio requests are not smaller than the hardware sectors") changed the pointers used for volume header allocations but failed to free the correct pointers in the error path path of hfsplus_fill_super() and hfsplus_read_wrapper. The second hunk came from a separate patch by Pavel Ivanov. Reported-by: Pavel Ivanov <paivanof@gmail.com> Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Signed-off-by: Christoph Hellwig <hch@tuxera.com> Cc: <stable@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-22Merge branch 'for-linus' of ↵Linus Torvalds2-4/+15
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (107 commits) vfs: use ERR_CAST for err-ptr tossing in lookup_instantiate_filp isofs: Remove global fs lock jffs2: fix IN_DELETE_SELF on overwriting rename() killing a directory fix IN_DELETE_SELF on overwriting rename() on ramfs et.al. mm/truncate.c: fix build for CONFIG_BLOCK not enabled fs:update the NOTE of the file_operations structure Remove dead code in dget_parent() AFS: Fix silly characters in a comment switch d_add_ci() to d_splice_alias() in "found negative" case as well simplify gfs2_lookup() jfs_lookup(): don't bother with . or .. get rid of useless dget_parent() in btrfs rename() and link() get rid of useless dget_parent() in fs/btrfs/ioctl.c fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers drivers: fix up various ->llseek() implementations fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek Ext4: handle SEEK_HOLE/SEEK_DATA generically Btrfs: implement our own ->llseek fs: add SEEK_HOLE and SEEK_DATA flags reiserfs: make reiserfs default to barrier=flush ... Fix up trivial conflicts in fs/xfs/linux-2.6/xfs_super.c due to the new shrinker callout for the inode cache, that clashed with the xfs code to start the periodic workers later.
2011-07-22hfsplus: ensure bio requests are not smaller than the hardware sectorsSeth Forshee4-42/+101
Currently all bio requests are 512 bytes, which may fail for media whose physical sector size is larger than this. Ensure these requests are not smaller than the block device logical block size. BugLink: http://bugs.launchpad.net/bugs/734883 Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2011-07-22hfsplus: Add additional range check to handle on-disk corruptionsNaohiro Aota1-0/+4
'recoff' is read from disk and used for an argument to memcpy, so if the value read from disk is larger than the page size, it result to "general protection fault". This patch add additional range check for the value, so that disk fuzz won't cause such fault. Signed-off-by: Naohiro Aota <naota@elisp.net> Signed-off-by: Christoph Hellwig <hch@lst.de>
2011-07-20fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlersJosef Bacik2-2/+11
Btrfs needs to be able to control how filemap_write_and_wait_range() is called in fsync to make it less of a painful operation, so push down taking i_mutex and the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some file systems can drop taking the i_mutex altogether it seems, like ext3 and ocfs2. For correctness sake I just pushed everything down in all cases to make sure that we keep the current behavior the same for everybody, and then each individual fs maintainer can make up their mind about what to do from there. Thanks, Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20fs: simplify the blockdev_direct_IO prototypeChristoph Hellwig1-2/+2
Simple filesystems always pass inode->i_sb_bdev as the block device argument, and never need a end_io handler. Let's simply things for them and for my grepping activity by dropping these arguments. The only thing not falling into that scheme is ext4, which passes and end_io handler without needing special flags (yet), but given how messy the direct I/O code there is use of __blockdev_direct_IO in one instead of two out of three cases isn't going to make a large difference anyway. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20fs: move inode_dio_wait calls into ->setattrChristoph Hellwig1-0/+2
Let filesystems handle waiting for direct I/O requests themselves instead of doing it beforehand. This means filesystem-specific locks to prevent new dio referenes from appearing can be held. This is important to allow generalizing i_dio_count to non-DIO_LOCKING filesystems. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-07hfsplus: Add error propagation for hfsplus_ext_write_extent_lockedAlexey Khoroshilov3-10/+24
Implement error propagation through the callers of hfsplus_ext_write_extent_locked(). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Christoph Hellwig <hch@lst.de>
2011-07-07hfsplus: add error checking for hfs_find_init()Alexey Khoroshilov5-26/+51
hfs_find_init() may fail with ENOMEM, but there are places, where the returned value is not checked. The consequences can be very unpleasant, e.g. kfree uninitialized pointer and inappropriate mutex unlocking. The patch adds checks for errors in hfs_find_init(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Christoph Hellwig <hch@lst.de>
2011-06-30hfsplus: lift the 2TB size limitChristoph Hellwig2-4/+9
Replace the hardcoded 2TB limit with a dynamic limit based on the block size now that we have fixed the few overflows preventing operation with large volumes. Signed-off-by: Christoph Hellwig <hch@tuxera.com>
2011-06-30hfsplus: fix overflow in hfsplus_read_wrapperChristoph Hellwig1-2/+3
For partitions larger than 2TB or at such an offset the hfs wrapper code in hfsplus might overflow the range representable in a 32-bit data type. Make sure we use a sector_t for the arithmetics leading to it. I'm not sure this code can be readed at all as hfs itself never supported such large volumes. Signed-off-by: Christoph Hellwig <hch@tuxera.com>
2011-06-30hfsplus: fix overflow in hfsplus_get_blockChristoph Hellwig1-3/+6
For filesystems larger than 2TB the final sector number passed to map_bh might overflow the range representable in a 32-bit data type. Make sure we use a sector_t for it and the arithmetics calculating it. Signed-off-by: Christoph Hellwig <hch@tuxera.com>
2011-06-30hfsplus: assignments inside `if' condition clean-upAnton Salikhmetov1-8/+27
Make assignments outside `if' conditions for unicode.c module where the checkpatch.pl script reported this coding style error. Signed-off-by: Anton Salikhmetov <alexo@tuxera.com> Signed-off-by: Christoph Hellwig <hch@tuxera.com>
2011-06-30hfsplus: Fix double iput of the same inode in hfsplus_fill_super()Alexey Khoroshilov1-1/+1
There is a misprint in resource deallocation code on error path in hfsplus_fill_super(): the sbi->alloc_file inode is iput twice, while the root inode in not iput at all. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Christoph Hellwig <hch@lst.de>
2011-06-30hfsplus: add missing call to bio_put()Seth Forshee1-2/+5
hfsplus leaks bio objects by failing to call bio_put() on the bios it allocates. Add the missing call to fix the leak. Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Cc: <stable@kernel.org> # .38.x, .39.x Signed-off-by: Christoph Hellwig <hch@lst.de>
2011-05-28hfsplus: remove unnecessary dentry_unhash on rmdir, dir renameSage Weil1-6/+2
hfsplus does not have problems with references to unlinked directories. Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-05-26vfs: push dentry_unhash on rename_dir into file systemsSage Weil1-2/+4
Only a few file systems need this. Start by pushing it down into each rename method (except gfs2 and xfs) so that it can be dealt with on a per-fs basis. Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-05-26vfs: push dentry_unhash on rmdir into file systemsSage Weil1-0/+2
Only a few file systems need this. Start by pushing it down into each fs rmdir method (except gfs2 and xfs) so it can be dealt with on a per-fs basis. This does not change behavior for any in-tree file systems. Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-24Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds1-2/+0
* 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block: (65 commits) Documentation/iostats.txt: bit-size reference etc. cfq-iosched: removing unnecessary think time checking cfq-iosched: Don't clear queue stats when preempt. blk-throttle: Reset group slice when limits are changed blk-cgroup: Only give unaccounted_time under debug cfq-iosched: Don't set active queue in preempt block: fix non-atomic access to genhd inflight structures block: attempt to merge with existing requests on plug flush block: NULL dereference on error path in __blkdev_get() cfq-iosched: Don't update group weights when on service tree fs: assign sb->s_bdi to default_backing_dev_info if the bdi is going away block: Require subsystems to explicitly allocate bio_set integrity mempool jbd2: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging jbd: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging fs: make fsync_buffers_list() plug mm: make generic_writepages() use plugging blk-cgroup: Add unaccounted time to timeslice_used. block: fixup plugging stubs for !CONFIG_BLOCK block: remove obsolete comments for blkdev_issue_zeroout. blktrace: Use rq->cmd_flags directly in blk_add_trace_rq. ... Fix up conflicts in fs/{aio.c,super.c}
2011-03-23userns: rename is_owner_or_cap to inode_owner_or_capableSerge E. Hallyn1-1/+1
And give it a kernel-doc comment. [akpm@linux-foundation.org: btrfs changed in linux-next] Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Daniel Lezcano <daniel.lezcano@free.fr> Acked-by: David Howells <dhowells@redhat.com> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-10block: remove per-queue pluggingJens Axboe1-2/+0
Code has been converted over to the new explicit on-stack plugging, and delay users have been converted to use the new API for that. So lets kill off the old plugging along with aops->sync_page(). Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-02-03hfsplus: fix up a comparism in hfsplus_file_extendChristoph Hellwig1-2/+2
Revert an incorrect hunk from commit b2837fcf4994e699a4def002e26f274d95b387c1, "hfsplus: %L-to-%ll, macro correction, and remove unneeded braces" revert a pointless change of comparism operation argument order, which turned out to not even be equivalent. Reported-by: Joe Perches <joe@perches.com> Signed-off-by: Christoph Hellwig <hch@tuxera.com>
2011-02-03hfsplus: fix two memory leaks in wrapper.cChuck Ebbert1-2/+2
Signed-Off-By: Chuck Ebbert <cebbert@redhat.com> Signed-off-by: Christoph Hellwig <hch@tuxera.com>
2011-02-03hfsplus: do not leak buffer on errorChuck Ebbert1-2/+2
Signed-Off-By: Chuck Ebbert <cebbert@redhat.com> Signed-off-by: Christoph Hellwig <hch@tuxera.com>
2011-02-03hfsplus: fix failed mount handlingChristoph Hellwig1-45/+61
Currently the error handling in hfsplus_fill_super is a mess, and can lead to accessing fields in the superblock that haven't been even set up yet. Fix this by making sure we do not set up sb->s_root until we have the mount fully set up, and before that do proper step by step unwinding instead of using hfsplus_put_super as a big hammer. Reported-by: Dan Williams <dcbw@redhat.com> Signed-off-by: Christoph Hellwig <hch@tuxera.com>
2011-01-12switch hfsplusAl Viro2-2/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-01-07Merge branch 'for-next' of ↵Linus Torvalds17-400/+701
git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus: hfsplus: %L-to-%ll, macro correction, and remove unneeded braces hfsplus: spaces/indentation clean-up hfsplus: C99 comments clean-up hfsplus: over 80 character lines clean-up hfsplus: fix an artifact in ioctl flag checking hfsplus: flush disk caches in sync and fsync hfsplus: optimize fsync hfsplus: split up inode flags hfsplus: write up fsync for directories hfsplus: simplify fsync hfsplus: avoid useless work in hfsplus_sync_fs hfsplus: make sure sync writes out all metadata hfsplus: use raw bio access for partition tables hfsplus: use raw bio access for the volume headers hfsplus: always use hfsplus_sync_fs to write the volume header hfsplus: silence a few debug printks hfsplus: fix option parsing during remount Fix up conflicts due to VFS changes in fs/hfsplus/{hfsplus_fs.h,unicode.c}
2011-01-07fs: dcache reduce branches in lookup pathNick Piggin2-2/+2
Reduce some branches and memory accesses in dcache lookup by adding dentry flags to indicate common d_ops are set, rather than having to check them. This saves a pointer memory access (dentry->d_op) in common path lookup situations, and saves another pointer load and branch in cases where we have d_op but not the particular operation. Patched with: git grep -E '[.>]([[:space:]])*d_op([[:space:]])*=' | xargs sed -e 's/\([^\t ]*\)->d_op = \(.*\);/d_set_d_op(\1, \2);/' -e 's/\([^\t ]*\)\.d_op = \(.*\);/d_set_d_op(\&\1, \2);/' -i Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07fs: icache RCU free inodesNick Piggin1-1/+9
RCU free the struct inode. This will allow: - Subsequent store-free path walking patch. The inode must be consulted for permissions when walking, so an RCU inode reference is a must. - sb_inode_list_lock to be moved inside i_lock because sb list walkers who want to take i_lock no longer need to take sb_inode_list_lock to walk the list in the first place. This will simplify and optimize locking. - Could remove some nested trylock loops in dcache code - Could potentially simplify things a bit in VM land. Do not need to take the page lock to follow page->mapping. The downsides of this is the performance cost of using RCU. In a simple creat/unlink microbenchmark, performance drops by about 10% due to inability to reuse cache-hot slab objects. As iterations increase and RCU freeing starts kicking over, this increases to about 20%. In cases where inode lifetimes are longer (ie. many inodes may be allocated during the average life span of a single inode), a lot of this cache reuse is not applicable, so the regression caused by this patch is smaller. The cache-hot regression could largely be avoided by using SLAB_DESTROY_BY_RCU, however this adds some complexity to list walking and store-free path walking, so I prefer to implement this at a later date, if it is shown to be a win in real situations. I haven't found a regression in any non-micro benchmark so I doubt it will be a problem. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07fs: change d_hash for rcu-walkNick Piggin2-2/+4
Change d_hash so it may be called from lock-free RCU lookups. See similar patch for d_compare for details. For in-tree filesystems, this is just a mechanical change. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07fs: change d_compare for rcu-walkNick Piggin2-7/+13
Change d_compare so it may be called from lock-free RCU lookups. This does put significant restrictions on what may be done from the callback, however there don't seem to have been any problems with in-tree fses. If some strange use case pops up that _really_ cannot cope with the rcu-walk rules, we can just add new rcu-unaware callbacks, which would cause name lookup to drop out of rcu-walk mode. For in-tree filesystems, this is just a mechanical change. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
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