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Author SHA1 Message Date
Al Viro
ca7068c41a anon_inodes: move allocation of anon_inode into ->mount()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:45 -04:00
Al Viro
2226a288fa 9p: make register_filesystem() the last failure exit
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:45 -04:00
Al Viro
01e0fe0b10 usbfs: kill racy detection of simple_pin_fs()
can check MS_KERNMOUNT in flags now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:45 -04:00
Al Viro
2452992aa7 make simple_pin_fs() pass MS_KERNMOUNT - it's a kernel-internal one
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:44 -04:00
Al Viro
ea23b45310 ibmasmfs: make register_filesystem the last failure exit
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:44 -04:00
Al Viro
640045a1cd spufs: make register_filesystem the last potential failure exit
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:44 -04:00
Al Viro
765fd6b23d kill reiserfs_fs_{i,sb}.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:43 -04:00
Al Viro
f466c6fdb3 move private bits of reiserfs_fs.h to fs/reiserfs/reiserfs.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:43 -04:00
Al Viro
a8a4b79b53 kill pointless includes of reiserfs_fs_{i,sb}.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:43 -04:00
Al Viro
a3063ab88f move reiserfs_acl.h to fs/reiserfs/acl.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:42 -04:00
Al Viro
c45ac8887e take private bits of reiserfs_xattr.h to fs/reiserfs/xattr.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:42 -04:00
Al Viro
82234e61a8 vfs: take path_get_longterm() out of write_seqcount scope
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:42 -04:00
Al Viro
3ee05ed067 no need to play with fs->seq in exit_fs()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:41 -04:00
Al Viro
68ac1234fb switch touch_atime to struct path
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:41 -04:00
Al Viro
40ffe67d2e switch unix_sock to struct path
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:41 -04:00
Al Viro
38eff28926 constify path argument of trace_seq_path()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:40 -04:00
Al Viro
66b3fad3f4 constify path argument of audit_log_d_path()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:40 -04:00
Al Viro
9fcf03d0d6 aio: fix the comment in aio_kick_handler()
It should've been changed when queue_work() became
queue_delayed_work(..., 0) in there.  It's always had been
about not needing a delay, not about not using specific
function...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:40 -04:00
Al Viro
cd1ea261ac aio: don't bother with cancel_delayed_work() in exit_aio()
__put_ioctx() will cover it anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:39 -04:00
Al Viro
bf50722a3c aio: use cancel_delayed_work_sync()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:39 -04:00
Al Viro
9fa1cb397f aio: aio_nr_lock is taken only synchronously now
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:39 -04:00
Al Viro
2dd542b7ae aio: aio_nr decrements don't need to be delayed
we can do that right in __put_ioctx(); as the result, the loop
in ioctx_alloc() can be killed.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:38 -04:00
Al Viro
e23754f880 aio: don't bother with async freeing on failure in ioctx_alloc()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:38 -04:00
Kai Bankett
5d026c7242 fs: initial qnx6fs addition
Adds support for qnx6fs readonly support to the linux kernel.

* Mount option
  The option mmi_fs can be used to mount Harman Becker/Audi MMI 3G
  HDD qnx6fs filesystems.

* Documentation
  A high level filesystem stucture description can be found in the
  Documentation/filesystems directory. (qnx6.txt)

* Additional features
  - Active (stable) superblock selection
  - Superblock checksum check (enforced)
  - Supports mount of qnx6 filesystems with to host different endianess
  - Automatic endianess detection
  - Longfilename support (with non-enfocing crc check)
  - All blocksizes (512, 1024, 2048 and 4096 supported)

Signed-off-by: Kai Bankett <chaosman@ontika.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:38 -04:00
Kai Bankett
516cdb68e5 qnx4fs: small cleanup
Small qnx4 cleanup patch.
- removes .writepage, .write_begin and .write_end (+callback functions)
- removes '.' path checking in namei.c (handled on upper layers)

Signed-off-by: Kai Bankett <chaosman@ontika.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:37 -04:00
Al Viro
32991ab305 vfs: d_alloc_root() gone
all callers converted to d_make_root() by now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:37 -04:00
Al Viro
318ceed088 tidy up after d_make_root() conversion
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:37 -04:00
Al Viro
ca85c07809 minixfs: switch to d_make_root()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:36 -04:00
Al Viro
68acb8e60d hfsplus: switch to d_make_root()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:36 -04:00
Al Viro
1688f86046 fat: switch to d_make_root()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:36 -04:00
Al Viro
ea29c6950a ntfs: switch to d_make_root()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:35 -04:00
Al Viro
48fde701af switch open-coded instances of d_make_root() to new helper
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:35 -04:00
Al Viro
6b4231e2f9 procfs: clean proc_fill_super() up
First of all, there's no need to zero ->i_uid/->i_gid on root inode -
both had been set to zero already.  Moreover, let's take the iput()
on failure to the failure exit it belongs to...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:34 -04:00
Al Viro
be0d93f0aa ... and the same failure exits cleanup for ocfs2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:34 -04:00
Al Viro
f56b0fbc64 coda: clean failure exits in coda_fill_super()
same as for cifs, move iput() to the right place, make it unconditional

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:34 -04:00
Al Viro
064326c077 clean up the failure exits in cifs_read_super()
no need to make that iput() conditional, just take it to the right place...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:33 -04:00
Al Viro
9bcb4b733c vfs: turn generic_drop_inode() into static inline
Once upon a time it used to be much bigger, but these days there's
no point whatsoever keeping it in fs/inode.c, especially since
it's not even needed as initializer for ->drop_inode() - it's the
default and leaving ->drop_inode NULL will do just as well.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:33 -04:00
Al Viro
e28e832c3e ecryptfs: don't bother with ->drop_inode()
generic_drop_inode() is the default

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:33 -04:00
Al Viro
b57ce9694e vfs: drop_file_write_access() made static
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20 21:29:32 -04:00
Al Viro
8de5277879 vfs: check i_nlink limits in vfs_{mkdir,rename_dir,link}
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 <viro@zeniv.linux.org.uk>
2012-03-20 21:29:32 -04:00
Linus Torvalds
c16fa4f2ad Linux 3.3 2012-03-18 16:15:34 -07:00
Jason Baron
93dc6107a7 Don't limit non-nested epoll paths
Commit 28d82dc1c4 ("epoll: limit paths") that I did to limit the
number of possible wakeup paths in epoll is causing a few applications
to longer work (dovecot for one).

The original patch is really about limiting the amount of epoll nesting
(since epoll fds can be attached to other fds). Thus, we probably can
allow an unlimited number of paths of depth 1. My current patch limits
it at 1000. And enforce the limits on paths that have a greater depth.

This is captured in: https://bugzilla.redhat.com/show_bug.cgi?id=681578

Signed-off-by: Jason Baron <jbaron@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-18 12:25:04 -07:00
Linus Torvalds
c579bc7e31 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking changes from David Miller:
 "1) icmp6_dst_alloc() returns NULL instead of ERR_PTR() leading to
     crashes, particularly during shutdown.  Reported by Dave Jones and
     fixed by Eric Dumazet.

  2) hyperv and wimax/i2400m return NETDEV_TX_BUSY when they have
     already freed the SKB, which causes crashes as to the caller this
     means requeue the packet.  Fixes from Eric Dumazet.

  3) usbnet driver doesn't allocate the right amount of headroom on
     fresh RX SKBs, fix from Eric Dumazet.

  4) Fix regression in ip6_mc_find_dev_rcu(), as an RCU lookup it
     abolutely should not take a reference to 'dev', this leads to
     leaks.  Fix from RonQing Li.

  5) Fix netfilter ctnetlink race between delete and timeout expiration.
     From Pablo Neira Ayuso.

  6) Revert SFQ change which causes regressions, specifically queueing
     to tail can lead to unavoidable flow starvation.  From Eric
     Dumazet.

  7) Fix a memory leak and a crash on corrupt firmware files in bnx2x,
     from Michal Schmidt."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  netfilter: ctnetlink: fix race between delete and timeout expiration
  ipv6: Don't dev_hold(dev) in ip6_mc_find_dev_rcu.
  wimax/i2400m: fix erroneous NETDEV_TX_BUSY use
  net/hyperv: fix erroneous NETDEV_TX_BUSY use
  net/usbnet: reserve headroom on rx skbs
  bnx2x: fix memory leak in bnx2x_init_firmware()
  bnx2x: fix a crash on corrupt firmware file
  sch_sfq: revert dont put new flow at the end of flows
  ipv6: fix icmp6_dst_alloc()
2012-03-17 19:22:24 -07:00
Linus Torvalds
96ee0499c5 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar.

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools, x86: Build perf on older user-space as well
  perf tools: Use scnprintf where applicable
  perf tools: Incorrect use of snprintf results in SEGV
2012-03-17 09:54:16 -07:00
Pablo Neira Ayuso
a16a1647fa netfilter: ctnetlink: fix race between delete and timeout expiration
Kerin Millar reported hardlockups while running `conntrackd -c'
in a busy firewall. That system (with several processors) was
acting as backup in a primary-backup setup.

After several tries, I found a race condition between the deletion
operation of ctnetlink and timeout expiration. This patch fixes
this problem.

Tested-by: Kerin Millar <kerframil@gmail.com>
Reported-by: Kerin Millar <kerframil@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-17 01:47:08 -07:00
RongQing.Li
c577923756 ipv6: Don't dev_hold(dev) in ip6_mc_find_dev_rcu.
ip6_mc_find_dev_rcu() is called with rcu_read_lock(), so don't
need to dev_hold().
With dev_hold(), not corresponding dev_put(), will lead to leak.

[ bug introduced in 96b52e61be (ipv6: mcast: RCU conversions) ]

Signed-off-by: RongQing.Li <roy.qing.li@gmail.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-16 21:56:42 -07:00
Linus Torvalds
cb1ecf25a8 Merge branch 'akpm' (more patches from Andrew)
Merge some more email patches from Andrew Morton:
 "A couple of nilfs fixes"

* emailed from Andrew Morton <akpm@linux-foundation.org>:
  nilfs2: fix NULL pointer dereference in nilfs_load_super_block()
  nilfs2: clamp ns_r_segments_percentage to [1, 99]
2012-03-16 17:14:55 -07:00
Ryusuke Konishi
d7178c79d9 nilfs2: fix NULL pointer dereference in nilfs_load_super_block()
According to the report from Slicky Devil, nilfs caused kernel oops at
nilfs_load_super_block function during mount after he shrank the
partition without resizing the filesystem:

 BUG: unable to handle kernel NULL pointer dereference at 00000048
 IP: [<d0d7a08e>] nilfs_load_super_block+0x17e/0x280 [nilfs2]
 *pde = 00000000
 Oops: 0000 [#1] PREEMPT SMP
 ...
 Call Trace:
  [<d0d7a87b>] init_nilfs+0x4b/0x2e0 [nilfs2]
  [<d0d6f707>] nilfs_mount+0x447/0x5b0 [nilfs2]
  [<c0226636>] mount_fs+0x36/0x180
  [<c023d961>] vfs_kern_mount+0x51/0xa0
  [<c023ddae>] do_kern_mount+0x3e/0xe0
  [<c023f189>] do_mount+0x169/0x700
  [<c023fa9b>] sys_mount+0x6b/0xa0
  [<c04abd1f>] sysenter_do_call+0x12/0x28
 Code: 53 18 8b 43 20 89 4b 18 8b 4b 24 89 53 1c 89 43 24 89 4b 20 8b 43
 20 c7 43 2c 00 00 00 00 23 75 e8 8b 50 68 89 53 28 8b 54 b3 20 <8b> 72
 48 8b 7a 4c 8b 55 08 89 b3 84 00 00 00 89 bb 88 00 00 00
 EIP: [<d0d7a08e>] nilfs_load_super_block+0x17e/0x280 [nilfs2] SS:ESP 0068:ca9bbdcc
 CR2: 0000000000000048

This turned out due to a defect in an error path which runs if the
calculated location of the secondary super block was invalid.

This patch fixes it and eliminates the reported oops.

Reported-by: Slicky Devil <slicky.dvl@gmail.com>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Tested-by: Slicky Devil <slicky.dvl@gmail.com>
Cc: <stable@vger.kernel.org>	[2.6.30+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-16 17:14:44 -07:00
Haogang Chen
3d777a6406 nilfs2: clamp ns_r_segments_percentage to [1, 99]
ns_r_segments_percentage is read from the disk.  Bogus or malicious
value could cause integer overflow and malfunction due to meaningless
disk usage calculation.  This patch reports error when mounting such
bogus volumes.

Signed-off-by: Haogang Chen <haogangchen@gmail.com>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-16 17:14:44 -07:00
Linus Torvalds
33e9ee8dbd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull maintainer update from James Morris:
 "Please pull this patch which adds Serge as maintainer of the
  capabilities code, as discussed on lwn and the lsm list.

  New capabilities must be signed off by the maintainer, and new uses of
  any capabilities should at be cc'd to the maintainer."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  MAINTAINERS: Add Serge as maintainer of capabilities
2012-03-16 17:04:02 -07:00