564 Commits

Author SHA1 Message Date
Linus Torvalds
98793265b4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (53 commits)
  Kconfig: acpi: Fix typo in comment.
  misc latin1 to utf8 conversions
  devres: Fix a typo in devm_kfree comment
  btrfs: free-space-cache.c: remove extra semicolon.
  fat: Spelling s/obsolate/obsolete/g
  SCSI, pmcraid: Fix spelling error in a pmcraid_err() call
  tools/power turbostat: update fields in manpage
  mac80211: drop spelling fix
  types.h: fix comment spelling for 'architectures'
  typo fixes: aera -> area, exntension -> extension
  devices.txt: Fix typo of 'VMware'.
  sis900: Fix enum typo 'sis900_rx_bufer_status'
  decompress_bunzip2: remove invalid vi modeline
  treewide: Fix comment and string typo 'bufer'
  hyper-v: Update MAINTAINERS
  treewide: Fix typos in various parts of the kernel, and fix some comments.
  clockevents: drop unknown Kconfig symbol GENERIC_CLOCKEVENTS_MIGR
  gpio: Kconfig: drop unknown symbol 'CS5535_GPIO'
  leds: Kconfig: Fix typo 'D2NET_V2'
  sound: Kconfig: drop unknown symbol ARCH_CLPS7500
  ...

Fix up trivial conflicts in arch/powerpc/platforms/40x/Kconfig (some new
kconfig additions, close to removed commented-out old ones)
2012-01-08 13:21:22 -08:00
Al Viro
34c80b1d93 vfs: switch ->show_options() to struct dentry *
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-06 23:19:54 -05:00
Al Viro
d8c9584ea2 vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-06 23:16:53 -05:00
Al Viro
69b34f3ab3 ext3: propagate umode_t
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:54:58 -05:00
Al Viro
1a67aafb5f switch ->mknod() to umode_t
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:54:54 -05:00
Al Viro
4acdaf27eb switch ->create() to umode_t
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>
2012-01-03 22:54:53 -05:00
Al Viro
18bb1db3e7 switch vfs_mkdir() and ->mkdir() to umode_t
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>
2012-01-03 22:54:53 -05:00
Al Viro
6b520e0565 vfs: fix the stupidity with i_dentry in inode destructors
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>
2012-01-03 22:52:40 -05:00
Al Viro
2a79f17e4a vfs: mnt_drop_write_file()
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>
2012-01-03 22:52:40 -05:00
Al Viro
a561be7100 switch a bunch of places to mnt_want_write_file()
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>
2012-01-03 22:52:35 -05:00
Justin P. Mattock
42b2aa86c6 treewide: Fix typos in various parts of the kernel, and fix some comments.
The below patch fixes some typos in various parts of the kernel, as well as fixes some comments.
Please let me know if I missed anything, and I will try to get it changed and resent.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-12-02 14:57:31 +01:00
Dan Carpenter
bcdd0c1600 ext3: NULL dereference in ext3_evict_inode()
This is an fsfuzzer bug.  ->s_journal is set at the end of
ext3_load_journal() but we try to use it in the error handling from
ext3_get_journal() while it's still NULL.

[  337.039041] BUG: unable to handle kernel NULL pointer dereference at 0000000000000024
[  337.040380] IP: [<ffffffff816e6539>] _raw_spin_lock+0x9/0x30
[  337.041687] PGD 0
[  337.043118] Oops: 0002 [#1] SMP
[  337.044483] CPU 3
[  337.044495] Modules linked in: ecb md4 cifs fuse kvm_intel kvm brcmsmac brcmutil crc8 cordic r8169 [last unloaded: scsi_wait_scan]
[  337.047633]
[  337.049259] Pid: 8308, comm: mount Not tainted 3.2.0-rc2-next-20111121+ #24 SAMSUNG ELECTRONICS CO., LTD. RV411/RV511/E3511/S3511    /RV411/RV511/E3511/S3511
[  337.051064] RIP: 0010:[<ffffffff816e6539>]  [<ffffffff816e6539>] _raw_spin_lock+0x9/0x30
[  337.052879] RSP: 0018:ffff8800b1d11ae8  EFLAGS: 00010282
[  337.054668] RAX: 0000000000000100 RBX: 0000000000000000 RCX: ffff8800b77c2000
[  337.056400] RDX: ffff8800a97b5c00 RSI: 0000000000000000 RDI: 0000000000000024
[  337.058099] RBP: ffff8800b1d11ae8 R08: 6000000000000000 R09: e018000000000000
[  337.059841] R10: ff67366cc2607c03 R11: 00000000110688e6 R12: 0000000000000000
[  337.061607] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8800a78f06e8
[  337.063385] FS:  00007f9d95652800(0000) GS:ffff8800b7180000(0000) knlGS:0000000000000000
[  337.065110] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  337.066801] CR2: 0000000000000024 CR3: 00000000aef2c000 CR4: 00000000000006e0
[  337.068581] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  337.070321] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  337.072105] Process mount (pid: 8308, threadinfo ffff8800b1d10000, task ffff8800b1d02be0)
[  337.073800] Stack:
[  337.075487]  ffff8800b1d11b08 ffffffff811f48cf ffff88007ac9b158 0000000000000000
[  337.077255]  ffff8800b1d11b38 ffffffff8119405d ffff88007ac9b158 ffff88007ac9b250
[  337.078851]  ffffffff8181bda0 ffffffff8181bda0 ffff8800b1d11b68 ffffffff81131e31
[  337.080284] Call Trace:
[  337.081706]  [<ffffffff811f48cf>] log_start_commit+0x1f/0x40
[  337.083107]  [<ffffffff8119405d>] ext3_evict_inode+0x1fd/0x2a0
[  337.084490]  [<ffffffff81131e31>] evict+0xa1/0x1a0
[  337.085857]  [<ffffffff81132031>] iput+0x101/0x210
[  337.087220]  [<ffffffff811339d1>] iget_failed+0x21/0x30
[  337.088581]  [<ffffffff811905fc>] ext3_iget+0x15c/0x450
[  337.089936]  [<ffffffff8118b0c1>] ? ext3_rsv_window_add+0x81/0x100
[  337.091284]  [<ffffffff816df9a4>] ext3_get_journal+0x15/0xde
[  337.092641]  [<ffffffff811a2e9b>] ext3_fill_super+0xf2b/0x1c30
[  337.093991]  [<ffffffff810ddf7d>] ? register_shrinker+0x4d/0x60
[  337.095332]  [<ffffffff8111c112>] mount_bdev+0x1a2/0x1e0
[  337.096680]  [<ffffffff811a1f70>] ? ext3_setup_super+0x210/0x210
[  337.098026]  [<ffffffff8119a770>] ext3_mount+0x10/0x20
[  337.099362]  [<ffffffff8111cbee>] mount_fs+0x3e/0x1b0
[  337.100759]  [<ffffffff810eda1b>] ? __alloc_percpu+0xb/0x10
[  337.102330]  [<ffffffff81135385>] vfs_kern_mount+0x65/0xc0
[  337.103889]  [<ffffffff8113611f>] do_kern_mount+0x4f/0x100
[  337.105442]  [<ffffffff811378fc>] do_mount+0x19c/0x890
[  337.106989]  [<ffffffff810e8456>] ? memdup_user+0x46/0x90
[  337.108572]  [<ffffffff810e84f3>] ? strndup_user+0x53/0x70
[  337.110114]  [<ffffffff811383fb>] sys_mount+0x8b/0xe0
[  337.111617]  [<ffffffff816ed93b>] system_call_fastpath+0x16/0x1b
[  337.113133] Code: 38 c2 74 0f 66 0f 1f 44 00 00 f3 90 0f b6 03 38 c2 75 f7 48 83 c4 08 5b 5d c3 0f 1f 84 00 00 00 00 00 55 b8 00 01 00 00 48 89 e5 <f0> 66 0f c1 07 0f b6 d4 38 c2 74 0c 0f 1f 00 f3 90 0f b6 07 38
[  337.116588] RIP  [<ffffffff816e6539>] _raw_spin_lock+0x9/0x30
[  337.118260]  RSP <ffff8800b1d11ae8>
[  337.119998] CR2: 0000000000000024
[  337.188701] ---[ end trace c36d790becac1615 ]---

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-11-22 13:36:15 +01:00
Eryu Guan
63894ab9f6 ext3: call ext3_mark_recovery_complete() when recovery is really needed
Call ext3_mark_recovery_complete() in ext3_fill_super() only if
needs_recovery is non-zero.

Besides that, print out "recovery complete" message after calling
ext3_mark_recovery_complete().

Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-11-09 12:23:17 +01:00
Linus Torvalds
d211858837 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue:
  vfs: add d_prune dentry operation
  vfs: protect i_nlink
  filesystems: add set_nlink()
  filesystems: add missing nlink wrappers
  logfs: remove unnecessary nlink setting
  ocfs2: remove unnecessary nlink setting
  jfs: remove unnecessary nlink setting
  hypfs: remove unnecessary nlink setting
  vfs: ignore error on forced remount
  readlinkat: ensure we return ENOENT for the empty pathname for normal lookups
  vfs: fix dentry leak in simple_fill_super()
2011-11-02 11:41:01 -07:00
Linus Torvalds
34116645d9 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Cleanup metadata flags handling
  udf: Skip mirror metadata FE loading when metadata FE is ok
  ext3: Allow quota file use root reservation
  udf: Remove web reference from UDF MAINTAINERS entry
  quota: Drop path reference on error exit from quotactl
  udf: Neaten udf_debug uses
  udf: Neaten logging output, use vsprintf extension %pV
  udf: Convert printks to pr_<level>
  udf: Rename udf_warning to udf_warn
  udf: Rename udf_error to udf_err
  udf: Promote some debugging messages to udf_error
  ext3: Remove the obsolete broken EXT3_IOC32_WAIT_FOR_READONLY.
  udf: Add readpages support for udf.
  ext3/balloc.c: local functions should be static
  ext2: fix the outdated comment in ext2_nfs_get_inode()
  ext3: remove deprecated oldalloc
  fs/ext3/balloc.c: delete useless initialization
  fs/ext2/balloc.c: delete useless initialization
  ext3: fix message in ext3_remount for rw-remount case
  ext3: Remove i_mutex from ext3_sync_file()

Fix up trivial (printf format cleanup) conflicts in fs/udf/udfdecl.h
2011-11-02 10:05:22 -07:00
Miklos Szeredi
bfe8684869 filesystems: add set_nlink()
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>
2011-11-02 12:53:43 +01:00
Miklos Szeredi
6d6b77f163 filesystems: add missing nlink wrappers
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>
2011-11-02 12:53:43 +01:00
Dmitry Monakhov
6360e21f94 ext3: Allow quota file use root reservation
Quota file is fs's metadata, so it is reasonable  to permit use
root resevation if necessary. This patch fix 265'th xfstest failure

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-10-31 23:43:59 +01:00
Linus Torvalds
36b8d186e6 Merge branch 'next' of git://selinuxproject.org/~jmorris/linux-security
* 'next' of git://selinuxproject.org/~jmorris/linux-security: (95 commits)
  TOMOYO: Fix incomplete read after seek.
  Smack: allow to access /smack/access as normal user
  TOMOYO: Fix unused kernel config option.
  Smack: fix: invalid length set for the result of /smack/access
  Smack: compilation fix
  Smack: fix for /smack/access output, use string instead of byte
  Smack: domain transition protections (v3)
  Smack: Provide information for UDS getsockopt(SO_PEERCRED)
  Smack: Clean up comments
  Smack: Repair processing of fcntl
  Smack: Rule list lookup performance
  Smack: check permissions from user space (v2)
  TOMOYO: Fix quota and garbage collector.
  TOMOYO: Remove redundant tasklist_lock.
  TOMOYO: Fix domain transition failure warning.
  TOMOYO: Remove tomoyo_policy_memory_lock spinlock.
  TOMOYO: Simplify garbage collector.
  TOMOYO: Fix make namespacecheck warnings.
  target: check hex2bin result
  encrypted-keys: check hex2bin result
  ...
2011-10-25 09:45:31 +02:00
Tao Ma
40bfa16dac ext3: Remove the obsolete broken EXT3_IOC32_WAIT_FOR_READONLY.
There are no user of EXT3_IOC32_WAIT_FOR_READONLY and also it is
broken. No one set the set_ro_timer, no one wake up us and our
state is set to TASK_INTERRUPTIBLE not RUNNING. So remove it.

Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-10-10 18:25:59 +02:00
H Hartley Sweeten
3ee77f2091 ext3/balloc.c: local functions should be static
This quites the sparse noise:

warning: symbol 'ext3_trim_all_free' was not declared. Should it be static?

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-10-05 01:29:22 +02:00
Christoph Hellwig
65299a3b78 block: separate priority boosting from REQ_META
Add a new REQ_PRIO to let requests preempt others in the cfq I/O schedule,
and lave REQ_META purely for marking requests as metadata in blktrace.

All existing callers of REQ_META except for XFS are updated to also
set REQ_PRIO for now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-23 14:50:29 +02:00
Christoph Hellwig
5dc06c5a70 block: remove READ_META and WRITE_META
Replace all occurnanced of the undocumented READ_META with READ | REQ_META
and remove the unused WRITE_META define.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-23 14:49:55 +02:00
Lukas Czerner
fbc854027c ext3: remove deprecated oldalloc
For a long time now orlov is the default block allocator in the ext3. It
performs better than the old one and no one seems to claim otherwise so
we can safely drop it and make oldalloc and orlov mount option
deprecated.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-08-17 11:42:19 +02:00
Julia Lawall
46130222df fs/ext3/balloc.c: delete useless initialization
Delete nontrivial initialization that is immediately overwritten by the
result of an allocation function.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
identifier i;
expression e;
@@

(
T i = \(0\|NULL\|ERR_PTR(...)\);
|
-T i = e;
+T i;
)
... when != i
i = \(kzalloc\|kcalloc\|kmalloc\)(...);

// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-08-17 11:41:21 +02:00
Toshiyuki Okajima
1cde201da4 ext3: fix message in ext3_remount for rw-remount case
If there are some inodes in orphan list while a filesystem is being
read-only mounted, we should recommend that peole umount and then
mount it when they try to remount with read-write. But the current
message and comment recommend that they umount and then remount it
which may be slightly misleading.

Signed-off-by: Toshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-08-17 11:41:20 +02:00
Jan Kara
5a0143a4f0 ext3: Remove i_mutex from ext3_sync_file()
ext3_sync_file() does not need i_mutex for anything so just drop it.

Signed-off-by: Jan Kara <jack@suse.cz>
2011-08-17 11:41:20 +02:00
Eric Sandeen
d2db60df1e ext3: Properly count journal credits for long symlinks
Commit ae54870a1dc9 ("ext3: Fix lock inversion in ext3_symlink()")
recalculated the number of credits needed for a long symlink, in the
process of splitting it into two transactions.  However, the first
credit calculation under-counted because if selinux is enabled, credits
are needed to create the selinux xattr as well.

Overrunning the reservation will result in an OOPS in
journal_dirty_metadata() due to this assert:

  J_ASSERT_JH(jh, handle->h_buffer_credits > 0);

Fix this by increasing the reservation size.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-11 17:23:40 -07:00
James Morris
5a2f3a02ae Merge branch 'next-evm' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/ima-2.6 into next
Conflicts:
	fs/attr.c

Resolve conflict manually.

Signed-off-by: James Morris <jmorris@namei.org>
2011-08-09 10:31:03 +10:00
Al Viro
d6952123b5 switch posix_acl_equiv_mode() to umode_t *
... so that &inode->i_mode could be passed to it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-08-01 02:10:06 -04:00
Al Viro
d3fb612076 switch posix_acl_create() to umode_t *
so we can pass &inode->i_mode to it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-08-01 02:09:42 -04:00
Linus Torvalds
2ac232f37f Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6:
  jbd: change the field "b_cow_tid" of struct journal_head from type unsigned to tid_t
  ext3.txt: update the links in the section "useful links" to the latest ones
  ext3: Fix data corruption in inodes with journalled data
  ext2: check xattr name_len before acquiring xattr_sem in ext2_xattr_get
  ext3: Fix compilation with -DDX_DEBUG
  quota: Remove unused declaration
  jbd: Use WRITE_SYNC in journal checkpoint.
  jbd: Fix oops in journal_remove_journal_head()
  ext3: Return -EINVAL when start is beyond the end of fs in ext3_trim_fs()
  ext3/ioctl.c: silence sparse warnings about different address spaces
  ext3/ext4 Documentation: remove bh/nobh since it has been deprecated
  ext3: Improve truncate error handling
  ext3: use proper little-endian bitops
  ext2: include fs.h into ext2_fs.h
  ext3: Fix oops in ext3_try_to_allocate_with_rsv()
  jbd: fix a bug of leaking jh->b_jcount
  jbd: remove dependency on __GFP_NOFAIL
  ext3: Convert ext3 to new truncate calling convention
  jbd: Add fixed tracepoints
  ext3: Add fixed tracepoints

Resolve conflicts in fs/ext3/fsync.c due to fsync locking push-down and
new fixed tracepoints.
2011-07-26 11:34:40 -07:00
Christoph Hellwig
4e34e719e4 fs: take the ACL checks to common code
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>
2011-07-25 14:30:23 -04:00
Al Viro
826cae2f2b kill boilerplates around posix_acl_create_masq()
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>
2011-07-25 14:27:32 -04:00
Al Viro
bc26ab5f65 kill boilerplate around posix_acl_chmod_masq()
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>
2011-07-25 14:27:30 -04:00
Linus Torvalds
e77819e57f vfs: move ACL cache lookup into generic code
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>
2011-07-25 14:23:39 -04:00
Jan Kara
b22570d9ab ext3: Fix data corruption in inodes with journalled data
When journalling data for an inode (either because it is a symlink or
because the filesystem is mounted in data=journal mode), ext3_evict_inode()
can discard unwritten data by calling truncate_inode_pages(). This is
because we don't mark the buffer / page dirty when journalling data but only
add the buffer to the running transaction and thus mm does not know there
are still unwritten data.

Fix the problem by carefully tracking transaction containing inode's data,
committing this transaction, and writing uncheckpointed buffers when inode
should be reaped.

Signed-off-by: Jan Kara <jack@suse.cz>
2011-07-23 01:49:00 +02:00
Josef Bacik
02c24a8218 fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers
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>
2011-07-20 20:47:59 -04:00
Christoph Hellwig
00eacd66cd ext3: make ext3 mount default to barrier=1
This patch turns on barriers by default for ext3.  mount -o barrier=0
will turn them off.  Based on a patch from Chris Mason in the SuSE tree.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Eric Sandeen <sandeen@redhat.com>
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: Ted Ts'o <tytso@mit.edu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20 20:47:54 -04:00
Christoph Hellwig
aacfc19c62 fs: simplify the blockdev_direct_IO prototype
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>
2011-07-20 20:47:49 -04:00
Christoph Hellwig
562c72aa57 fs: move inode_dio_wait calls into ->setattr
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>
2011-07-20 20:47:47 -04:00
Bernd Schubert
c878c73f8d ext3: Fix compilation with -DDX_DEBUG
Compilation of ext3/namei.c brought up an error and warning messages
when compiled with -DDX_DEBUG.

Signed-off-by: Bernd Schubert<bernd.schubert@itwm.fraunhofer.de>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-07-20 23:16:33 +02:00
Al Viro
a9049376ee make d_splice_alias(ERR_PTR(err), dentry) = ERR_PTR(err)
... and simplify the living hell out of callers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20 01:44:26 -04:00
Al Viro
7e40145eb1 ->permission() sanitizing: don't pass flags to ->check_acl()
not used in the instances anymore.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20 01:43:21 -04:00
Al Viro
9c2c703929 ->permission() sanitizing: pass MAY_NOT_BLOCK to ->check_acl()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20 01:43:19 -04:00
Mimi Zohar
9d8f13ba3f security: new security_inode_init_security API adds function callback
This patch changes the security_inode_init_security API by adding a
filesystem specific callback to write security extended attributes.
This change is in preparation for supporting the initialization of
multiple LSM xattrs and the EVM xattr.  Initially the callback function
walks an array of xattrs, writing each xattr separately, but could be
optimized to write multiple xattrs at once.

For existing security_inode_init_security() calls, which have not yet
been converted to use the new callback function, such as those in
reiserfs and ocfs2, this patch defines security_old_inode_init_security().

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
2011-07-18 12:29:38 -04:00
Lukas Czerner
2c2ea9451f ext3: Return -EINVAL when start is beyond the end of fs in ext3_trim_fs()
We should return -EINVAL when the FITRIM parameters are not sane, but
currently we are exiting silently if start is beyond the end of the
file system. This commit fixes this so we return -EINVAL as other file
systems do.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
CC: Jan Kara <jack@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-06-25 17:29:53 +02:00
H Hartley Sweeten
81fe8c62fe ext3/ioctl.c: silence sparse warnings about different address spaces
The 'from' argument for copy_from_user and the 'to' argument for
copy_to_user should both be tagged as __user address space.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-06-25 17:29:53 +02:00
Jan Kara
ee3e77f180 ext3: Improve truncate error handling
New truncate calling convention allows us to handle errors from
ext3_block_truncate_page(). So reorganize the code so that
ext3_block_truncate_page() is called before we change inode size.

This also removes unnecessary block zeroing from error recovery after failed
buffered writes (zeroing isn't needed because we could have never written
non-zero data to disk). We have to be careful and keep zeroing in direct IO
write error recovery because there we might have already overwritten end of the
last file block.

Signed-off-by: Jan Kara <jack@suse.cz>
2011-06-25 17:29:52 +02:00
Jan Kara
ad95c5e9bc ext3: Fix oops in ext3_try_to_allocate_with_rsv()
Block allocation is called from two places: ext3_get_blocks_handle() and
ext3_xattr_block_set(). These two callers are not necessarily synchronized
because xattr code holds only xattr_sem and i_mutex, and
ext3_get_blocks_handle() may hold only truncate_mutex when called from
writepage() path. Block reservation code does not expect two concurrent
allocations to happen to the same inode and thus assertions can be triggered
or reservation structure corruption can occur.

Fix the problem by taking truncate_mutex in xattr code to serialize
allocations.

CC: Sage Weil <sage@newdream.net>
CC: stable@kernel.org
Reported-by: Fyodor Ustinov <ufm@ufm.su>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-06-25 17:29:52 +02:00