Commit Graph

3240 Commits

Author SHA1 Message Date
NeilBrown fdb36673a9 [PATCH] knfsd: Make ext3 reject filehandles referring to invalid inode number
Inodes earlier than the 'first' inode (e.g.  journal, resize) should be
rejected early - except the root inode.  Also inode numbers that are too
big should be rejected early.

[akpm@osdl.org: cleanup]
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16 12:54:31 -07:00
NeilBrown ecaff756ff [PATCH] knfsd: Have ext2 reject file handles with bad inode numbers early
This prevents bad inode numbers from triggering errors in ext2_get_inode.

[akpm@osdl.org: speedup, cleanup]
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16 12:54:30 -07:00
Linus Torvalds 48c068e0f4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] Fix CIFS readdir access denied when SE Linux enabled
2006-09-12 17:34:46 -07:00
Linus Torvalds af84b99f22 Merge git://oss.sgi.com:8090/xfs/xfs-2.6
* git://oss.sgi.com:8090/xfs/xfs-2.6:
  [XFS] Fix a bad pointer dereference in the quota statvfs handling.
  [XFS] Fix xfs_splice_write() so appended data gets to disk.
  [XFS] Fix ABBA deadlock between i_mutex and iolock. Avoid calling
  [XFS] Prevent free space oversubscription and xfssyncd looping.
2006-09-12 17:31:16 -07:00
Trond Myklebust e9f7bee1df [PATCH] NFS: large non-page-aligned direct I/O clobbers memory
The logic in nfs_direct_read_schedule and nfs_direct_write_schedule can
allow data->npages to be one larger than rpages.  This causes a page
pointer to be written beyond the end of the pagevec in nfs_read_data (or
nfs_write_data).

Fix this by making nfs_(read|write)_alloc() calculate the size of the
pagevec array, and initialise data->npages.

Also get rid of the redundant argument to nfs_commit_alloc().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-08 10:22:51 -07:00
Badari Pulavarty 3665d0e58f [PATCH] ext3_getblk() should handle HOLE correctly
It has been reported that ext3_getblk() is not doing the right thing and
triggering following WARN():

BUG: warning at fs/ext3/inode.c:1016/ext3_getblk()
 <c01c5140> ext3_getblk+0x98/0x2a6  <c03b2806> md_wakeup_thread+0x26/0x2a
 <c01c536d> ext3_bread+0x1f/0x88  <c01cedf9> ext3_quota_read+0x136/0x1ae
 <c018b683> v1_read_dqblk+0x61/0xac  <c0188f32> dquot_acquire+0xf6/0x107
 <c01ceaba> ext3_acquire_dquot+0x46/0x68  <c01897d4> dqget+0x155/0x1e7
 <c018a97b> dquot_transfer+0x3e0/0x3e9  <c016fe52> dput+0x23/0x13e
 <c01c7986> ext3_setattr+0xc3/0x240  <c0120f66> current_fs_time+0x52/0x6a
 <c017320e> notify_change+0x2bd/0x30d  <c0159246> chown_common+0x9c/0xc5
 <c02a222c> strncpy_from_user+0x3b/0x68  <c0167fe6> do_path_lookup+0xdf/0x266
 <c016841b> __user_walk_fd+0x44/0x5a  <c01592b9> sys_chown+0x4a/0x55
 <c015a43c> vfs_write+0xe7/0x13c  <c01695d4> sys_mkdir+0x1f/0x23
 <c0102a97> syscall_call+0x7/0xb

Looking at the code, it looks like it's not handle HOLE correctly.  It ends
up returning -EIO.  Here is the patch to fix it.

If we really want to be paranoid, we can allow return values 0 (HOLE), 1
(we asked for one block) and return -EIO for more than 1 block.  But I
really don't see a reason for doing it - all we need is the block# here.
(doesn't matter how many blocks are mapped).

ext3_get_blocks_handle() returns number of blocks it mapped.  It returns 0
in case of HOLE.  ext3_getblk() should handle HOLE properly (currently its
dumping warning stack and returning -EIO).

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Acked-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-08 10:22:50 -07:00
Nathan Scott 0edc7d0f37 [XFS] Fix a bad pointer dereference in the quota statvfs handling.
SGI-PV: 955993
SGI-Modid: xfs-linux-melb:xfs-kern:26934a

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: David Chatterton <chatz@sgi.com>
2006-09-07 14:27:23 +10:00
David Chinner 0a8d17d090 [XFS] Fix xfs_splice_write() so appended data gets to disk.
xfs_splice_write() failed to update the on disk inode size when extending
the so when the file was closed the range extended by splice was truncated
off. Hence any region of a file written to by splice would end up as a
hole full of zeros.

SGI-PV: 955939
SGI-Modid: xfs-linux-melb:xfs-kern:26920a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: David Chatterton <chatz@sgi.com>
2006-09-07 14:27:15 +10:00
Lachlan McIlroy 721259bce2 [XFS] Fix ABBA deadlock between i_mutex and iolock. Avoid calling
__blockdev_direct_IO for the DIO_OWN_LOCKING case for direct I/O reads
since it drops and reacquires the i_mutex while holding the iolock and
this violates the locking order.

SGI-PV: 955696
SGI-Modid: xfs-linux-melb:xfs-kern:26898a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chatterton <chatz@sgi.com>
2006-09-07 14:27:05 +10:00
David Chinner 4be536debe [XFS] Prevent free space oversubscription and xfssyncd looping.
The fix for recent ENOSPC deadlocks introduced certain limitations on
allocations. The fix could cause xfssyncd to loop endlessly if we did not
leave some space free for the allocator to work correctly. Basically, we
needed to ensure that we had at least 4 blocks free for an AG free list
and a block for the inode bmap btree at all times.

However, this did not take into account the fact that each AG has a free
list that needs 4 blocks. Hence any filesystem with more than one AG could
cause oversubscription of free space and make xfssyncd spin forever trying
to allocate space needed for AG freelists that was not available in the
AG.

The following patch reserves space for the free lists in all AGs plus the
inode bmap btree which prevents oversubscription. It also prevents those
blocks from being reported as free space (as they can never be used) and
makes the SMP in-core superblock accounting code and the reserved block
ioctl respect this requirement.

SGI-PV: 955674
SGI-Modid: xfs-linux-melb:xfs-kern:26894a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: David Chatterton <chatz@sgi.com>
2006-09-07 14:26:50 +10:00
Steve French b835bebe95 [CIFS] Fix CIFS readdir access denied when SE Linux enabled
CIFS had one path in which dentry was instantiated before the corresponding
inode metadata was filled in.

Fixes Redhat bugzilla bug #163493

Signed-off-by: Steve French <sfrench@us.ibm.com>
Acked-by: Eric Paris <eparis@redhat.com>
Acked-by: Dave Kleikamp <shaggy@austin.ibm.com>
2006-09-06 22:02:22 +00:00
Henrik Kretzschmar fe2bbc4832 [PATCH] add missing desctiption in super.c
Adds kernel-doc for alloc_super() type in fs/super.c.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06 11:00:01 -07:00
Badari Pulavarty 4cfb04a9d3 [PATCH] manage-jbd-its-own-slab fix
Missed a place where I forgot to convert kfree() to kmem_cache_free() as
part of jbd-manage-its-own-slab changes.

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01 11:39:10 -07:00
Adrian Bunk 7288026b86 [XFS] Fix char size overflow in bmap_alloc call for unwritten extent
conversion.

Since bma.conv is a char and XFS_BMAPI_CONVERT is 0x1000, bma.conv was
always assigned zero. Spotted by the GNU C compiler (SVN version).

SGI-PV: 947312
SGI-Modid: xfs-linux-melb:xfs-kern:26887a

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-08-30 13:41:58 +10:00
Linus Torvalds dc709bd190 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] Do not send Query All EAs SMB when mount option nouser_xattr
  [CIFS] endian errors in lanman protocol support
  [CIFS] Fix oops in cifs_close due to unitialized lock sem and list in
  [CIFS] Fix oops when negotiating lanman and no password specified
  [CIFS]
  [CIFS] Allow cifsd to suspend if connection is lost
  [CIFS] Make midState usage more consistent
  [CIFS] spinlock protect read of last srv response time in timeout path
  [CIFS] Do not time out posix brl requests when using new posix setfileinfo
2006-08-29 15:54:07 -07:00
Andrew Morton f5ef68da5f [PATCH] /proc/meminfo: don't put spaces in names
None of the other /proc/meminfo lines have a space in the identifier.  This
post-2.6.17 addition has the potential to break existing parsers, so use an
underscore instead (like Committed_AS).

Cc: Christoph Lameter <clameter@engr.sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:33 -07:00
Dave Jones 513627d7fe [PATCH] fix up lockdep trace in fs/exec.c
This fixes the locking error noticed by lockdep:

  =============================================
  [ INFO: possible recursive locking detected ]
  ---------------------------------------------
  init/1 is trying to acquire lock:
   (&sighand->siglock){....}, at: [<c047a78a>] flush_old_exec+0x3ae/0x859

  but task is already holding lock:
   (&sighand->siglock){....}, at: [<c047a77a>] flush_old_exec+0x39e/0x859

  other info that might help us debug this:
  2 locks held by init/1:
   #0:  (tasklist_lock){..--}, at: [<c047a76a>] flush_old_exec+0x38e/0x859
   #1:  (&sighand->siglock){....}, at: [<c047a77a>] flush_old_exec+0x39e/0x859

  stack backtrace:
   [<c04051e1>] show_trace_log_lvl+0x54/0xfd
   [<c040579d>] show_trace+0xd/0x10
   [<c04058b6>] dump_stack+0x19/0x1b
   [<c043b33a>] __lock_acquire+0x773/0x997
   [<c043bacf>] lock_acquire+0x4b/0x6c
   [<c060630b>] _spin_lock+0x19/0x28
   [<c047a78a>] flush_old_exec+0x3ae/0x859
   [<c0498053>] load_elf_binary+0x4aa/0x1628
   [<c0479cab>] search_binary_handler+0xa7/0x24e
   [<c047b577>] do_execve+0x15b/0x1f9
   [<c04022b4>] sys_execve+0x29/0x4d
   [<c0403faf>] syscall_call+0x7/0xb

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:32 -07:00
Ingo Molnar 4df46240a1 [PATCH] lockdep: annotate reiserfs
reiserfs seems to have another locking level layer for the i_mutex due to the
xattrs-are-a-directory thing.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:32 -07:00
Badari Pulavarty ea817398e6 [PATCH] Manage jbd allocations from its own slabs
JBD currently allocates commit and frozen buffers from slabs.  With
CONFIG_SLAB_DEBUG, its possible for an allocation to cross the page
boundary causing IO problems.

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=200127

So, instead of allocating these from regular slabs - manage allocation from
its own slabs and disable slab debug for these slabs.

[akpm@osdl.org: cleanups]
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:32 -07:00
Masoud Asgharifard Sharbiani 45f17e0c2a [PATCH] eventpoll.c compile fix
Fix two compile failures in eventpoll.c code which would happen if
DEBUG_EPOLL is bigger than zero.

Signed-off-by: Masoud Sharbiani <masouds@google.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:31 -07:00
Evgeniy Dushistov ecdc639487 [PATCH] ufs: truncate correction
1) When we allocated last fragment in ufs_truncate, we read page, check
   if block mapped to address, and if not trying to allocate it.  This is
   wrong behaviour, fragment may be NOT allocated, but mapped, this
   happened because of "block map" function not checked allocated fragment
   or not, it just take address of the first fragment in the block, add
   offset of fragment and return result, this is correct behaviour in
   almost all situation except call from ufs_truncate.

2) Almost all implementation of UFS, which I can investigate have such
   "defect": if you have full disk, and try truncate file, for example 3GB
   to 2MB, and have hole in this region, truncate return -ENOSPC.  I tried
   evade from this problem, but "block allocation" algorithm is tied to
   right value of i_lastfrag, and fix of this corner case may slow down of
   ordinaries scenarios, so this patch makes behavior of "truncate"
   operations similar to what other UFS implementations do.

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:31 -07:00
Evgeniy Dushistov c37336b078 [PATCH] ufs: write to hole in big file
On UFS, this scenario:
	open(O_TRUNC)
	lseek(1024 * 1024 * 80)
	write("A")
	lseek(1024 * 2)
	write("A")

may cause access to invalid address.

This happened because of "goal" is calculated in wrong way in block
allocation path, as I see this problem exists also in 2.4.

We use construction like this i_data[lastfrag], i_data array of pointers to
direct blocks, indirect and so on, it has ceratain size ~20 elements, and
lastfrag may have value for example 40000.

Also this patch fixes related to handling such scenario issues, wrong
zeroing metadata, in case of block(not fragment) allocation, and wrong goal
calculation, when we allocate block

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:31 -07:00
Mingming Cao 08fb306fe6 [PATCH] ext3 filesystem bogus ENOSPC with reservation fix
To handle the earlier bogus ENOSPC error caused by filesystem full of block
reservation, current code falls back to non block reservation, starts to
allocate block(s) from the goal allocation block group as if there is no
block reservation.

Current code needs to re-load the corresponding block group descriptor for
the initial goal block group in this case.  The patch fixes this.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:30 -07:00
Andries Brouwer 607eb266ae [PATCH] ext2: prevent div-by-zero on corrupted fs
Mounting an ext2 filesystem with zero s_inodes_per_group will cause a
divide error.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:30 -07:00
Andries Brouwer f5fb09fa33 [PATCH] Fix for minix crash
Mounting a (corrupt) minix filesystem with zero s_zmap_blocks
gives a spectacular crash on my 2.6.17.8 system, no doubt
because minix/inode.c does an unconditional
	minix_set_bit(0,sbi->s_zmap[0]->b_data);

[akpm@osdl.org: make labels conistent while we're there]

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:30 -07:00
Peter Zijlstra 6946bd6363 [PATCH] lockdep: fix blkdev_open() warning
On Wed, 2006-08-09 at 07:57 +0200, Rolf Eike Beer wrote:
> =============================================
> [ INFO: possible recursive locking detected ]
> ---------------------------------------------
> parted/7929 is trying to acquire lock:
>  (&bdev->bd_mutex){--..}, at: [<c105eb8d>] __blkdev_put+0x1e/0x13c
>
> but task is already holding lock:
>  (&bdev->bd_mutex){--..}, at: [<c105eec6>] do_open+0x72/0x3a8
>
> other info that might help us debug this:
> 1 lock held by parted/7929:
>  #0:  (&bdev->bd_mutex){--..}, at: [<c105eec6>] do_open+0x72/0x3a8
> stack backtrace:
>  [<c1003aad>] show_trace_log_lvl+0x58/0x15b
>  [<c100495f>] show_trace+0xd/0x10
>  [<c1004979>] dump_stack+0x17/0x1a
>  [<c102dee5>] __lock_acquire+0x753/0x99c
>  [<c102e3b0>] lock_acquire+0x4a/0x6a
>  [<c1204501>] mutex_lock_nested+0xc8/0x20c
>  [<c105eb8d>] __blkdev_put+0x1e/0x13c
>  [<c105ecc4>] blkdev_put+0xa/0xc
>  [<c105f18a>] do_open+0x336/0x3a8
>  [<c105f21b>] blkdev_open+0x1f/0x4c
>  [<c1057b40>] __dentry_open+0xc7/0x1aa
>  [<c1057c91>] nameidata_to_filp+0x1c/0x2e
>  [<c1057cd1>] do_filp_open+0x2e/0x35
>  [<c1057dd7>] do_sys_open+0x38/0x68
>  [<c1057e33>] sys_open+0x16/0x18
>  [<c1002845>] sysenter_past_esp+0x56/0x8d

OK, I'm having a look here; its all new to me so bear with me.

blkdev_open() calls
  do_open(bdev, ...,BD_MUTEX_NORMAL) and takes
    mutex_lock_nested(&bdev->bd_mutex, BD_MUTEX_NORMAL)

then something fails, and we're thrown to:

out_first: where
    if (bdev != bdev->bd_contains)
      blkdev_put(bdev->bd_contains) which is
        __blkdev_put(bdev->bd_contains, BD_MUTEX_NORMAL) which does
          mutex_lock_nested(&bdev->bd_contains->bd_mutex, BD_MUTEX_NORMAL) <--- lockdep trigger

When going to out_first, dbev->bd_contains is either bdev or whole, and
since we take the branch it must be whole. So it seems to me the
following patch would be the right one:

[akpm@osdl.org: compile fix]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:29 -07:00
Jeff Mahoney 81a42d298d [DISKLABEL] SUN: Fix signed int usage for sector count
The current sun disklabel code uses a signed int for the sector count.
When partitions larger than 1 TB are used, the cast to a sector_t causes
the partition sizes to be invalid:

 # cat /proc/paritions | grep sdan
   66   112 2146435072 sdan
   66   115 9223372036853660736 sdan3
   66   120 9223372036853660736 sdan8

This patch switches the sector count to an unsigned int to fix this.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-26 17:55:55 -07:00
Greg Kroah-Hartman 62250b3bb5 Merge branch 'fixes' of git://git.linux-nfs.org/pub/linux/nfs-2.6 2006-08-24 22:29:46 -07:00
Trond Myklebust a969fd5a4e VFS: Remove redundant open-coded mode bit checks in open_exec().
The check in open_exec() for inode->i_mode & 0111 has been made
redundant by the fix to permission().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from 1d3741c5d991686699f100b65b9956f7ee7ae0ae commit)
2006-08-24 15:55:16 -04:00
Trond Myklebust 9167b0b9a0 VFS: Remove redundant open-coded mode bit check in prepare_binfmt().
The check in prepare_binfmt() for inode->i_mode & 0111 is redundant,
since open_exec() will already have done that.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from 822dec482ced07af32c378cd936d77345786572b commit)
2006-08-24 15:55:06 -04:00
Trond Myklebust a343bb7750 VFS: Fix access("file", X_OK) in the presence of ACLs
Currently, the access() call will return incorrect information on NFS if
there exists an ACL that grants execute access to the user on a regular
file. The reason the information is incorrect is that the VFS overrides
this execute access in open_exec() by checking (inode->i_mode & 0111).

This patch propagates the VFS execute bit check back into the generic
permission() call.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from 64cbae98848c4c99851cb0a405f0b4982cd76c1e commit)
2006-08-24 15:54:58 -04:00
Trond Myklebust 16b4289c74 NFSv4: Add v4 exception handling for the ACL functions.
This is needed in order to handle any NFS4ERR_DELAY errors that might be
returned by the server. It also ensures that we map the NFSv4 errors before
they are returned to userland.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from 71c12b3f0abc7501f6ed231a6d17bc9c05a238dc commit)
2006-08-24 15:54:13 -04:00
David Howells e8896495bc NFS: Check lengths more thoroughly in NFS4 readdir XDR decode
Check the bounds of length specifiers more thoroughly in the XDR decoding of
NFS4 readdir reply data.

Currently, if the server returns a bitmap or attr length that causes the
current decode point pointer to wrap, this could go undetected (consider a
small "negative" length on a 32-bit machine).

Also add a check into the main XDR decode handler to make sure that the amount
of data is a multiple of four bytes (as specified by RFC-1014).  This makes
sure that we can do u32* pointer subtraction in the NFS client without risking
an undefined result (the result is undefined if the pointers are not correctly
aligned with respect to one another).

Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from 5861fddd64a7eaf7e8b1a9997455a24e7f688092 commit)
2006-08-24 15:53:34 -04:00
Trond Myklebust 79558f3610 NFS: Fix issue with EIO on NFS read
The problem is that we may be caching writes that would extend the file and
create a hole in the region that we are reading. In this case, we need to
detect the eof from the server, ensure that we zero out the pages that
are part of the hole and mark them as up to date.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from 856b603b01b99146918c093969b6cb1b1b0f1c01 commit)
2006-08-24 15:51:08 -04:00
Trond Myklebust 01df9c5e91 LOCKD: Fix a deadlock in nlm_traverse_files()
nlm_traverse_files() is not allowed to hold the nlm_file_mutex while calling
nlm_inspect file, since it may end up calling nlm_release_file() when
releaseing the blocks.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from e558d3cde986e04f68afe8c790ad68ef4b94587a commit)
2006-08-24 15:51:00 -04:00
Trond Myklebust 8f8e7a50f4 SUNRPC: Fix dentry refcounting issues with users of rpc_pipefs
rpc_unlink() and rpc_rmdir() will dput the dentry reference for you.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from a05a57effa71a1f67ccbfc52335c10c8b85f3f6a commit)
2006-08-24 15:50:51 -04:00
Trond Myklebust 5d67476fff SUNRPC: make rpc_unlink() take a dentry argument instead of a path
Signe-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from 88bf6d811b01a4be7fd507d18bf5f1c527989089 commit)
2006-08-24 15:50:07 -04:00
ASANO Masahiro a634904a7d VFS: add lookup hint for network file systems
I'm trying to speeding up mkdir(2) for network file systems.  A typical
mkdir(2) calls two inode_operations: lookup and mkdir.  The lookup
operation would fail with ENOENT in common case.  I think it is unnecessary
because the subsequent mkdir operation can check it.  In case of creat(2),
lookup operation is called with the LOOKUP_CREATE flag, so individual
filesystem can omit real lookup.  e.g.  nfs_lookup().

Here is a sample patch which uses LOOKUP_CREATE and O_EXCL on mkdir,
symlink and mknod.  This uses the gadget for creat(2).

And here is the result of a benchmark on NFSv3.
  mkdir(2) 10,000 times:
    original  50.5 sec
    patched   29.0 sec

Signed-off-by: ASANO Masahiro <masano@tnes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from fab7bf44449b29f9d5572a5dd8adcf7c91d5bf0f commit)
2006-08-24 15:49:14 -04:00
Nikita Danilov ddeff520f0 NFS: Fix a potential deadlock in nfs_release_page
nfs_wb_page() waits on request completion and, as a result, is not safe to be
called from nfs_release_page() invoked by VM scanner as part of GFP_NOFS
allocation. Fix possible deadlock by analyzing gfp mask and refusing to
release page if __GFP_FS is not set.

Signed-off-by: Nikita Danilov <danilov@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from 374d969debfb290bafcb41d28918dc6f7e43ce31 commit)
2006-08-24 15:48:46 -04:00
Jan Kara 00a2b0f6dd Fix possible UDF deadlock and memory corruption (CVE-2006-4145)
UDF code is not really ready to handle extents larger that 1GB. This is
the easy way to forbid creating those.

Also truncation code did not count with the case when there are no
extents in the file and we are extending the file.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-22 12:52:23 -07:00
Oleg Nesterov e014ff8d42 [PATCH] uninline ioprio_best()
Saves 376 bytes (5 callers) for me.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Jens Axboe <axboe@suse.de>
2006-08-21 10:02:50 +02:00
Oleg Nesterov 9f83e45eb5 [PATCH] Fix current_io_context() vs set_task_ioprio() race
I know nothing about io scheduler, but I suspect set_task_ioprio() is not safe.

current_io_context() initializes "struct io_context", then sets ->io_context.
set_task_ioprio() running on another cpu may see the changes out of order, so
->set_ioprio(ioc) may use io_context which was not initialized properly.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Jens Axboe <axboe@suse.de>
2006-08-21 08:34:15 +02:00
Oleg Nesterov 78bd4d484f [PATCH] sys_ioprio_set: minor do_each_thread+break fix
From include/linux/sched.h:

         * Careful: do_each_thread/while_each_thread is a double loop so
         *          'break' will not work as expected - use goto instead.
         */

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Jens Axboe <axboe@suse.de>
2006-08-21 08:33:23 +02:00
Steve French ea4c07d780 [CIFS] Do not send Query All EAs SMB when mount option nouser_xattr
specified

Pointed out by Bjoern Jacke

Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-08-16 19:44:25 +00:00
Greg Kroah-Hartman 80914d97aa Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2 2006-08-15 12:31:36 -07:00
Steve French 5ddaa683a5 [CIFS] endian errors in lanman protocol support
le16 compared to host-endian constant
	u8 fed to le32_to_cpu()
	le16 compared to host-endian constant

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-08-15 13:35:48 +00:00
Steve French e466e4876b [CIFS] Fix oops in cifs_close due to unitialized lock sem and list in
new POSIX locking code

Signed-off-by: Steve French <sfrench@us.ibm.com>
2006-08-15 13:07:18 +00:00
Trond Myklebust 74361cb682 [PATCH] fcntl(F_SETSIG) fix
fcntl(F_SETSIG) no longer works on leases because
lease_release_private_callback() gets called as the lease is copied in
order to initialise it.

The problem is that lease_alloc() performs an unnecessary initialisation,
which sets the lease_manager_ops.  Avoid the problem by allocating the
target lease structure using locks_alloc_lock().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-14 13:10:59 -07:00
Alexander Zarochentsev 1d7ea7324a [PATCH] fuse: fix error case in fuse_readpages
Don't let fuse_readpages leave the @pages list not empty when exiting
on error.

[akpm@osdl.org: kernel-doc fixes]
Signed-off-by: Alexander Zarochentsev <zam@namesys.com>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-14 12:54:29 -07:00
Dan Bastone 95f8797f42 [PATCH] initialize parts of udf inode earlier in create
Eric says:

> I saw an oops down this path when trying to create a new file on a UDF
> filesystem which was internally marked as readonly, but mounted rw:
>
> udf_create
>         udf_new_inode
>                 new_inode
>                         alloc_inode
>                         	udf_alloc_inode
>                 udf_new_block
>                         returns EIO due to readonlyness
>                 iput (on error)

I ran into the same issue today, but when listing a directory with
invalid/corrupt entries:

udf_lookup
        udf_iget
                get_new_inode_fast
                        alloc_inode
                                udf_alloc_inode
                __udf_read_inode
                        fails for any reason
                iput (on error)
                        ...

The following patch to udf_alloc_inode() should take care of both (and
other similar) cases, but I've only tested it with udf_lookup().

Signed-off-by: Dan Bastone <dan@pwienterprises.com>
Cc: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-14 12:54:28 -07:00