14 Jul, 2012
3 commits
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Pass mount flags to sget() so that it can use them in initialising a new
superblock before the set function is called. They could also be passed to the
compare function.Signed-off-by: David Howells
Signed-off-by: Al Viro -
boolean "does it have to be exclusive?" flag is passed instead;
Local filesystem should just ignore it - the object is guaranteed
not to be there yet.Signed-off-by: Al Viro
-
Just the flags; only NFS cares even about that, but there are
legitimate uses for such argument. And getting rid of that
completely would require splitting ->lookup() into a couple
of methods (at least), so let's leave that alone for now...Signed-off-by: Al Viro
06 May, 2012
1 commit
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After we moved inode_sync_wait() from end_writeback() it doesn't make sense
to call the function end_writeback() anymore. Rename it to clear_inode()
which well says what the function really does - set I_CLEAR flag.Signed-off-by: Jan Kara
Signed-off-by: Fengguang Wu
22 Mar, 2012
1 commit
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Pull vfs pile 1 from Al Viro:
"This is _not_ all; in particular, Miklos' and Jan's stuff is not there
yet."* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (64 commits)
ext4: initialization of ext4_li_mtx needs to be done earlier
debugfs-related mode_t whack-a-mole
hfsplus: add an ioctl to bless files
hfsplus: change finder_info to u32
hfsplus: initialise userflags
qnx4: new helper - try_extent()
qnx4: get rid of qnx4_bread/qnx4_getblk
take removal of PF_FORKNOEXEC to flush_old_exec()
trim includes in inode.c
um: uml_dup_mmap() relies on ->mmap_sem being held, but activate_mm() doesn't hold it
um: embed ->stub_pages[] into mmu_context
gadgetfs: list_for_each_safe() misuse
ocfs2: fix leaks on failure exits in module_init
ecryptfs: make register_filesystem() the last potential failure exit
ntfs: forgets to unregister sysctls on register_filesystem() failure
logfs: missing cleanup on register_filesystem() failure
jfs: mising cleanup on register_filesystem() failure
make configfs_pin_fs() return root dentry on success
configfs: configfs_create_dir() has parent dentry in dentry->d_parent
configfs: sanitize configfs_create()
...
21 Mar, 2012
3 commits
-
Signed-off-by: Al Viro
-
Signed-off-by: Al Viro
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New field of struct super_block - ->s_max_links. Maximal allowed
value of ->i_nlink or 0; in the latter case all checks still need
to be done in ->link/->mkdir/->rename instances. Note that this
limit applies both to directoris and to non-directories.Signed-off-by: Al Viro
20 Mar, 2012
1 commit
-
Signed-off-by: Cong Wang
02 Feb, 2012
1 commit
-
This patch fixes merge conflict resolution breakage introduced by merge
d3712b9dfcf4 ("Merge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream").The commit changed 'mtd_can_have_bb()' function and made it always
return zero, which is incorrect. Instead, we need it to return whether
the underlying flash device can have bad eraseblocks or not. UBI needs
this information because it affects how it handles the underlying flash.
E.g., if the underlying flash is NOR, it cannot have bad blocks and any
write or erase error is fatal, and all we can do is to switch to R/O
mode. We do not need to reserve a pool of good eraseblocks for bad
eraseblocks handling, and so on.This patch also removes 'mtd_can_have_bb()' invocations from Logfs to
ensure correct Logfs behavior.I've tested that with this patch UBI works on top of NOR and NAND
flashes emulated by mtdram and nandsim correspondingly.This patch is based on patch from Linus Torvalds.
Signed-off-by: Artem Bityutskiy
Acked-by: Jörn Engel
Acked-by: Prasad Joshi
Acked-by: Brian Norris
Signed-off-by: Linus Torvalds
01 Feb, 2012
1 commit
-
There are few important bug fixes for LogFS
* tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream:
Logfs: Allow NULL block_isbad() methods
logfs: Grow inode in delete path
logfs: Free areas before calling generic_shutdown_super()
logfs: remove useless BUG_ON
MAINTAINERS: Add Prasad Joshi in LogFS maintiners
logfs: Propagate page parameter to __logfs_write_inode
logfs: set superblock shutdown flag after generic sb shutdown
logfs: take write mutex lock during fsync and sync
logfs: Prevent memory corruption
logfs: update page reference count for pined pagesFix up conflict in fs/logfs/dev_mtd.c due to semantic change in what
"mtd->block_isbad" means in commit f2933e86ad93: "Logfs: Allow NULL
block_isbad() methods" clashing with the abstraction changes in the
commits 7086c19d0742: "mtd: introduce mtd_block_isbad interface" and
d58b27ed58a3: "logfs: do not use 'mtd->block_isbad' directly".This resolution takes the semantics from commit f2933e86ad93, and just
makes mtd_block_isbad() return zero (false) if the 'block_isbad'
function is NULL. But that also means that now "mtd_can_have_bb()"
always returns 0.Now, "mtd_block_markbad()" will obviously return an error if the
low-level driver doesn't support bad blocks, so this is somewhat
non-symmetric, but it actually makes sense if a NULL "block_isbad"
function is considered to mean "I assume that all my blocks are always
good".
28 Jan, 2012
9 commits
-
Not all mtd drivers define block_isbad(). Let's assume no bad blocks
instead of refusing to mount.Signed-off-by: Joern Engel
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Can be necessary if an inode gets deleted (through -ENOSPC) before being
written. Might be better to move this into logfs_write_rec(), but for
now go with the stupid&safe patch.Signed-off-by: Joern Engel
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Or hit an assertion in map_invalidatepage() instead.
Signed-off-by: Joern Engel
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It prevents write sizes >4k.
Signed-off-by: Joern Engel
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During GC LogFS has to rewrite each valid block to a separate segment.
Rewrite operation reads data from an old segment and writes it to a
newly allocated segment. Since every write operation changes data
block pointers maintained in inode, inode should also be rewritten.In GC path to avoid AB-BA deadlock LogFS marks a page with
PG_pre_locked in addition to locking the page (PG_locked). The page
lock is ignored iff the page is pre-locked.LogFS uses a special file called segment file. The segment file
maintains an 8 bytes entry for every segment. It keeps track of erase
count, level etc. for every segment.Bad things happen with a segment belonging to the segment file is GCed
------------[ cut here ]------------
kernel BUG at /home/prasad/logfs/readwrite.c:297!
invalid opcode: 0000 [#1] SMP
Modules linked in: logfs joydev usbhid hid psmouse e1000 i2c_piix4
serio_raw [last unloaded: logfs]
Pid: 20161, comm: mount Not tainted 3.1.0-rc3+ #3 innotek GmbH
VirtualBox
EIP: 0060:[] EFLAGS: 00010292 CPU: 0
EIP is at logfs_lock_write_page+0x6a/0x70 [logfs]
EAX: 00000027 EBX: f73f5b20 ECX: c16007c8 EDX: 00000094
ESI: 00000000 EDI: e59be6e4 EBP: c7337b28 ESP: c7337b18
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process mount (pid: 20161, ti=c7336000 task=eb323f70 task.ti=c7336000)
Stack:
f8099a3d c7337b24 f73f5b20 00001002 c7337b50 f8091f6d f8099a4d f80994e4
00000003 00000000 c7337b68 00000000 c67e4400 00001000 c7337b80 f80935e5
00000000 00000000 00000000 00000000 e1fcf000 0000000f e59be618 c70bf900
Call Trace:
[] logfs_get_write_page.clone.16+0xdd/0x100 [logfs]
[] logfs_mod_segment_entry+0x55/0x110 [logfs]
[] logfs_get_segment_entry+0x1d/0x20 [logfs]
[] ? logfs_cleanup_journal+0x50/0x50 [logfs]
[] ostore_get_erase_count+0x1b/0x40 [logfs]
[] logfs_open_area+0xc8/0x150 [logfs]
[] ? kmemleak_alloc+0x2c/0x60
[] __logfs_segment_write.clone.16+0x4e/0x1b0 [logfs]
[] ? mempool_kmalloc+0x13/0x20
[] ? mempool_kmalloc+0x13/0x20
[] logfs_segment_write+0x17f/0x1d0 [logfs]
[] logfs_write_i0+0x11c/0x180 [logfs]
[] logfs_write_direct+0x45/0x90 [logfs]
[] __logfs_write_buf+0xbd/0xf0 [logfs]
[] ? kmap_atomic_prot+0x4e/0xe0
[] logfs_write_buf+0x3b/0x60 [logfs]
[] __logfs_write_inode+0xa9/0x110 [logfs]
[] logfs_rewrite_block+0xc0/0x110 [logfs]
[] ? get_mapping_page+0x10/0x60 [logfs]
[] ? logfs_load_object_aliases+0x2e0/0x2f0 [logfs]
[] logfs_gc_segment+0x2ad/0x310 [logfs]
[] __logfs_gc_once+0x4a/0x80 [logfs]
[] logfs_gc_pass+0x683/0x6a0 [logfs]
[] logfs_mount+0x5a9/0x680 [logfs]
[] mount_fs+0x21/0xd0
[] ? __alloc_percpu+0xf/0x20
[] ? alloc_vfsmnt+0xb1/0x130
[] vfs_kern_mount+0x4b/0xa0
[] do_kern_mount+0x3e/0xe0
[] do_mount+0x34d/0x670
[] ? strndup_user+0x49/0x70
[] sys_mount+0x6b/0xa0
[] syscall_call+0x7/0xb
Code: f8 e8 8b 93 39 c9 8b 45 f8 3e 0f ba 28 00 19 d2 85 d2 74 ca eb d0 0f 0b 8d 45 fc 89 44 24 04 c7 04 24 3d 9a 09 f8 e8 09 92 39 c9 0b 8d 74 26 00 55 89 e5 3e 8d 74 26 00 8b 10 80 e6 01 74 09
EIP: [] logfs_lock_write_page+0x6a/0x70 [logfs] SS:ESP 0068:c7337b18
---[ end trace 96e67d5b3aa3d6ca ]---The patch passes locked page to __logfs_write_inode. It calls function
logfs_get_wblocks() to pre-lock the page. This ensures any further
attempts to lock the page are ignored (esp from get_erase_count).Acked-by: Joern Engel
Signed-off-by: Prasad Joshi -
While unmounting the file system LogFS calls generic_shutdown_super.
The function does file system independent superblock shutdown.
However, it might result in call file system specific inode eviction.LogFS marks FS shutting down by setting bit LOGFS_SB_FLAG_SHUTDOWN in
super->s_flags. Since, inode eviction might call truncate on inode,
following BUG is observed when file system is unmounted:------------[ cut here ]------------
kernel BUG at /home/prasad/logfs/segment.c:362!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU 3
Modules linked in: logfs binfmt_misc ppdev virtio_blk parport_pc lp
parport psmouse floppy virtio_pci serio_raw virtio_ring virtioPid: 1933, comm: umount Not tainted 3.0.0+ #4 Bochs Bochs
RIP: 0010:[] []
logfs_segment_write+0x211/0x230 [logfs]
RSP: 0018:ffff880062d7b9e8 EFLAGS: 00010202
RAX: 000000000000000e RBX: ffff88006eca9000 RCX: 0000000000000000
RDX: ffff88006fd87c40 RSI: ffffea00014ff468 RDI: ffff88007b68e000
RBP: ffff880062d7ba48 R08: 8000000020451430 R09: 0000000000000000
R10: dead000000100100 R11: 0000000000000000 R12: ffff88006fd87c40
R13: ffffea00014ff468 R14: ffff88005ad0a460 R15: 0000000000000000
FS: 00007f25d50ea760(0000) GS:ffff88007fd80000(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000d05e48 CR3: 0000000062c72000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process umount (pid: 1933, threadinfo ffff880062d7a000,
task ffff880070b44500)
Stack:
ffff880062d7ba38 ffff88005ad0a508 0000000000001000 0000000000000000
8000000020451430 ffffea00014ff468 ffff880062d7ba48 ffff88005ad0a460
ffff880062d7bad8 ffffea00014ff468 ffff88006fd87c40 0000000000000000
Call Trace:
[] logfs_write_i0+0x12e/0x190 [logfs]
[] __logfs_write_rec+0x140/0x220 [logfs]
[] __logfs_write_rec+0xf2/0x220 [logfs]
[] logfs_write_rec+0x64/0xd0 [logfs]
[] __logfs_write_buf+0x106/0x110 [logfs]
[] logfs_write_buf+0x4e/0x80 [logfs]
[] __logfs_write_inode+0x98/0x110 [logfs]
[] logfs_truncate+0x54/0x290 [logfs]
[] logfs_evict_inode+0xdc/0x190 [logfs]
[] evict+0x85/0x170
[] iput+0xe6/0x1b0
[] shrink_dcache_for_umount_subtree+0x218/0x280
[] shrink_dcache_for_umount+0x51/0x90
[] generic_shutdown_super+0x2c/0x100
[] logfs_kill_sb+0x57/0xf0 [logfs]
[] deactivate_locked_super+0x45/0x70
[] deactivate_super+0x4a/0x70
[] mntput_no_expire+0xa4/0xf0
[] sys_umount+0x6f/0x380
[] system_call_fastpath+0x16/0x1b
Code: 55 c8 49 8d b6 a8 00 00 00 45 89 f9 45 89 e8 4c 89 e1 4c 89 55
b8 c7 04 24 00 00 00 00 e8 68 fc ff ff 4c 8b 55 b8 e9 3c ff ff ff
0b 0f 0b c7 45 c0 00 00 00 00 e9 44 fe ff ff 66 66 66 66 66
RIP [] logfs_segment_write+0x211/0x230 [logfs]
RSP
---[ end trace fe6b040cea952290 ]---Therefore, move super->s_flags setting after the fs-indenpendent work
has been finished.Reviewed-by: Joern Engel
Signed-off-by: Prasad Joshi -
LogFS uses super->s_write_mutex while writing data to disk. Taking the
same mutex lock in sync and fsync code path solves the following BUG:------------[ cut here ]------------
kernel BUG at /home/prasad/logfs/dev_bdev.c:134!Pid: 2387, comm: flush-253:16 Not tainted 3.0.0+ #4 Bochs Bochs
RIP: 0010:[] []
bdev_writeseg+0x25d/0x270 [logfs]
Call Trace:
[] logfs_open_area+0x91/0x150 [logfs]
[] ? find_level.clone.9+0x62/0x100
[] __logfs_segment_write.clone.20+0x5c/0x190 [logfs]
[] ? mempool_kmalloc+0x15/0x20
[] ? mempool_alloc+0x53/0x130
[] logfs_segment_write+0x1d4/0x230 [logfs]
[] logfs_write_i0+0x12e/0x190 [logfs]
[] __logfs_write_rec+0x140/0x220 [logfs]
[] logfs_write_rec+0x64/0xd0 [logfs]
[] __logfs_write_buf+0x106/0x110 [logfs]
[] logfs_write_buf+0x4e/0x80 [logfs]
[] __logfs_writepage+0x23/0x80 [logfs]
[] logfs_writepage+0xdc/0x110 [logfs]
[] __writepage+0x17/0x40
[] write_cache_pages+0x208/0x4f0
[] ? set_page_dirty+0x70/0x70
[] generic_writepages+0x4a/0x70
[] do_writepages+0x21/0x40
[] writeback_single_inode+0x101/0x250
[] writeback_sb_inodes+0xed/0x1c0
[] writeback_inodes_wb+0x7b/0x1e0
[] wb_writeback+0x4c3/0x530
[] ? sub_preempt_count+0x9d/0xd0
[] wb_do_writeback+0xdb/0x290
[] ? sub_preempt_count+0x9d/0xd0
[] ? _raw_spin_unlock_irqrestore+0x18/0x40
[] ? del_timer+0x8a/0x120
[] bdi_writeback_thread+0x8c/0x2e0
[] ? wb_do_writeback+0x290/0x290
[] kthread+0x96/0xa0
[] kernel_thread_helper+0x4/0x10
[] ? kthread_worker_fn+0x190/0x190
[] ? gs_change+0xb/0xb
RIP [] bdev_writeseg+0x25d/0x270 [logfs]
---[ end trace 0211ad60a57657c4 ]---Reviewed-by: Joern Engel
Signed-off-by: Prasad Joshi -
This is a bad one. I wonder whether we were so far protected by
no_free_segments(sb) usually being smaller than LOGFS_NO_AREAS.Found by Dan Carpenter using smatch.
Signed-off-by: Joern Engel
Signed-off-by: Prasad Joshi -
LogFS sets PG_private flag to indicate a pined page. We assumed that
marking a page as private is enough to ensure its existence. But
instead it is necessary to hold a reference count to the page.The change resolves the following BUG
BUG: Bad page state in process flush-253:16 pfn:6a6d0
page flags: 0x100000000000808(uptodate|private)Suggested-and-Acked-by: Joern Engel
Signed-off-by: Prasad Joshi
11 Jan, 2012
1 commit
-
MTD pull for 3.3
* tag 'for-linus-3.3' of git://git.infradead.org/mtd-2.6: (113 commits)
mtd: Fix dependency for MTD_DOC200x
mtd: do not use mtd->block_markbad directly
logfs: do not use 'mtd->block_isbad' directly
mtd: introduce mtd_can_have_bb helper
mtd: do not use mtd->suspend and mtd->resume directly
mtd: do not use mtd->lock, unlock and is_locked directly
mtd: do not use mtd->sync directly
mtd: harmonize mtd_writev usage
mtd: do not use mtd->lock_user_prot_reg directly
mtd: mtd->write_user_prot_reg directly
mtd: do not use mtd->read_*_prot_reg directly
mtd: do not use mtd->get_*_prot_info directly
mtd: do not use mtd->read_oob directly
mtd: mtdoops: do not use mtd->panic_write directly
romfs: do not use mtd->get_unmapped_area directly
mtd: do not use mtd->get_unmapped_area directly
mtd: do use mtd->point directly
mtd: introduce mtd_has_oob helper
mtd: mtdcore: export symbols cleanup
mtd: clean-up the default_mtd_writev function
...Fix up trivial edit/remove conflict in drivers/staging/spectra/lld_mtd.c
10 Jan, 2012
8 commits
-
Instead, use the new 'mtd_can_have_bb()' helper.
Cc: Jörn Engel
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
This patch teaches 'mtd_sync()' to do nothing when the MTD driver does
not have the '->sync()' method, which allows us to remove all direct
'mtd->sync' accesses.Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
This patch is part of a patch-set which changes the MTD interface
from 'mtd->func()' form to 'mtd_func()' form. We need this because
we want to add common code to to all drivers in the mtd core level,
which is impossible with the current interface when MTD clients
call driver functions like 'read()' or 'write()' directly.At this point we just introduce a new inline wrapper function, but
later some of them are expected to gain more code. E.g., the input
parameters check should be moved to the wrappers rather than be
duplicated at many drivers.This particular patch introduced the 'mtd_erase()' interface. The
following patches add all the other interfaces one by one.Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse -
We are going to re-work the MTD interface and change 'mtd->write()' to
'mtd_write()', 'mtd->read()' to 'mtd_read()' and so forth for all functions
in the 'struct mtd_info' structure.However, logfs has its own 'mtd_read()', 'mtd_write()', etc functions
which collide with our changes. This patch renames these logfs functions
to 'logfs_mtd_read()', 'logfs_mtd_write()', etc.Additionally, to make the 'fs/logfs/dev_mtd.c' file look consistent, rename
similarly all the other functions starting with 'mtd_'.Cc: Jörn Engel
Signed-off-by: Artem Bityutskiy
Signed-off-by: David Woodhouse
04 Jan, 2012
5 commits
-
Signed-off-by: Al Viro
-
Signed-off-by: Al Viro
-
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 methodSigned-off-by: Al Viro
-
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
-
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
07 Nov, 2011
1 commit
-
* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits)
Revert "tracing: Include module.h in define_trace.h"
irq: don't put module.h into irq.h for tracking irqgen modules.
bluetooth: macroize two small inlines to avoid module.h
ip_vs.h: fix implicit use of module_get/module_put from module.h
nf_conntrack.h: fix up fallout from implicit moduleparam.h presence
include: replace linux/module.h with "struct module" wherever possible
include: convert various register fcns to macros to avoid include chaining
crypto.h: remove unused crypto_tfm_alg_modname() inline
uwb.h: fix implicit use of asm/page.h for PAGE_SIZE
pm_runtime.h: explicitly requires notifier.h
linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h
miscdevice.h: fix up implicit use of lists and types
stop_machine.h: fix implicit use of smp.h for smp_processor_id
of: fix implicit use of errno.h in include/linux/of.h
of_platform.h: delete needless include
acpi: remove module.h include from platform/aclinux.h
miscdevice.h: delete unnecessary inclusion of module.h
device_cgroup.h: delete needless include
net: sch_generic remove redundant use of
net: inet_timewait_sock doesnt need
...Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in
- drivers/media/dvb/frontends/dibx000_common.c
- drivers/media/video/{mt9m111.c,ov6650.c}
- drivers/mfd/ab3550-core.c
- include/linux/dmaengine.h
02 Nov, 2011
3 commits
-
Replace remaining direct i_nlink updates with a new set_nlink()
updater function.Signed-off-by: Miklos Szeredi
Tested-by: Toshiyuki Okajima
Signed-off-by: Christoph Hellwig -
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
-
alloc_inode() initializes i_nlink to 1. Remove unnecessary
re-initialization.Signed-off-by: Miklos Szeredi
CC: Joern Engel
CC: Prasad Joshi
Signed-off-by: Christoph Hellwig
01 Nov, 2011
2 commits
-
memchr_inv() is mainly used to check whether the whole buffer is filled
with just a specified byte.The function name and prototype are stolen from logfs and the
implementation is from SLUB.Signed-off-by: Akinobu Mita
Acked-by: Christoph Lameter
Acked-by: Pekka Enberg
Cc: Matt Mackall
Acked-by: Joern Engel
Cc: Marcin Slusarz
Cc: Eric Dumazet
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some files were using the complete module.h infrastructure without
actually including the header at all. Fix them up in advance so
once the implicit presence is removed, we won't get failures like this:CC [M] fs/nfsd/nfssvc.o
fs/nfsd/nfssvc.c: In function 'nfsd_create_serv':
fs/nfsd/nfssvc.c:335: error: 'THIS_MODULE' undeclared (first use in this function)
fs/nfsd/nfssvc.c:335: error: (Each undeclared identifier is reported only once
fs/nfsd/nfssvc.c:335: error: for each function it appears in.)
fs/nfsd/nfssvc.c: In function 'nfsd':
fs/nfsd/nfssvc.c:555: error: implicit declaration of function 'module_put_and_exit'
make[3]: *** [fs/nfsd/nfssvc.o] Error 1Signed-off-by: Paul Gortmaker
