linux-toradex.git/fs/ext2/super.c, branch v2.6.24.3

exportfs: make struct export_operations const

2007-10-22T15:13:21+00:00

Now that nfsd has stopped writing to the find_exported_dentry member we an
mark the export_operations const

Signed-off-by: Christoph Hellwig 
Cc: Neil Brown 
Cc: "J. Bruce Fields" 
Cc: 
Cc: Dave Kleikamp 
Cc: Anton Altaparmakov 
Cc: David Chinner 
Cc: Timothy Shimmin 
Cc: OGAWA Hirofumi 
Cc: Hugh Dickins 
Cc: Chris Mason 
Cc: Jeff Mahoney 
Cc: "Vladimir V. Saveliev" 
Cc: Steven Whitehouse 
Cc: Mark Fasheh 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ext2: new export ops

2007-10-22T15:13:19+00:00

Trivial switch over to the new generic helpers.

Signed-off-by: Christoph Hellwig 
Cc: Neil Brown 
Cc: "J. Bruce Fields" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ext2 reservations

2007-10-17T15:43:02+00:00

Val's cross-port of the ext3 reservations code into ext2.

[mbligh@mbligh.org: Small type error for printk
[akpm@linux-foundation.org: fix types, sync with ext3]
[mbligh@mbligh.org: Bring ext2 reservations code in line with latest ext3]
[akpm@linux-foundation.org: kill noisy printk]
[akpm@linux-foundation.org: remember to dirty the gdp's block]
[akpm@linux-foundation.org: cross-port the missed 5dea5176e5c32ef9f0d1a41d28427b3bf6881b3a]
[akpm@linux-foundation.org: cross-port e6022603b9aa7d61d20b392e69edcdbbc1789969]
[akpm@linux-foundation.org: Port the omitted 08fb306fe63d98eb86e3b16f4cc21816fa47f18e]
[akpm@linux-foundation.org: Backport the missed 20acaa18d0c002fec180956f87adeb3f11f635a6]
[akpm@linux-foundation.org: fixes]
[cmm@us.ibm.com: fix reservation extension]
[bunk@stusta.de: make ext2_get_blocks() static]
[hugh@veritas.com: fix hang]
[hugh@veritas.com: ext2_new_blocks should reset the reservation window size]
[hugh@veritas.com: ext2 balloc: fix off-by-one against rsv_end]
[hugh@veritas.com: grp_goal 0 is a genuine goal (unlike -1), so ext2_try_to_allocate_with_rsv should treat it as such]
[hugh@veritas.com: rbtree usage cleanup]
[pbadari@us.ibm.com: Fix for ext2 reservation]
[bunk@kernel.org: remove fs/ext2/balloc.c:reserve_blocks()]
[hugh@veritas.com: ext2 balloc: use io_error label]
Cc: "Martin J. Bligh" 
Cc: Valerie Henson 
Cc: Mingming Cao 
Cc: Mel Gorman 
Cc: Hugh Dickins 
Signed-off-by: Adrian Bunk 
Signed-off-by: Hugh Dickins 
Signed-off-by: Badari Pulavarty 
Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ext2/4: use is_power_of_2()

2007-10-17T15:42:53+00:00

Replace n & (n - 1) with is_power_of_2(n)

Signed-off-by: vignesh babu 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ext2: show all mount options

2007-10-17T15:42:48+00:00

Using mtab is problematic for various reasons, one of them is that
unprivileged mounts won't turn up in there.  So we want to get rid of it, and
use /proc/mounts instead.

But most filesystems are lazy, and are not showing all mount options.  Which
means, that without mtab, the user won't be able to see some or all of the
options.

It would be nice if the generic code could remember the mount options, and
show them without the need to add extra code to filesystems.  But this is not
easy, because different filesystems handle mount options given options, and
not tough the rest.  This is not taken into account by mount(8) either, so
/etc/mtab will be broken in this case.

This series fixes up ->show_options() in ext[234].

Signed-off-by: Miklos Szeredi 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Slab API: remove useless ctor parameter and reorder parameters

2007-10-17T15:42:45+00:00

Slab constructors currently have a flags parameter that is never used.  And
the order of the arguments is opposite to other slab functions.  The object
pointer is placed before the kmem_cache pointer.

Convert

        ctor(void *object, struct kmem_cache *s, unsigned long flags)

to

        ctor(struct kmem_cache *s, void *object)

throughout the kernel

[akpm@linux-foundation.org: coupla fixes]
Signed-off-by: Christoph Lameter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib: percpu_counter_init error handling

2007-10-17T15:42:44+00:00

alloc_percpu can fail, propagate that error.

Signed-off-by: Peter Zijlstra 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fix inode_table test in ext234_check_descriptors

2007-07-26T18:35:17+00:00

ext[234]_check_descriptors sanity checks block group descriptor geometry at
mount time, testing whether the block bitmap, inode bitmap, and inode table
reside wholly within the blockgroup.  However, the inode table test is off
by one so that if the last block in the inode table resides on the last
block of the block group, the test incorrectly fails.  This is because it
tests the last block as (start + length) rather than (start + length - 1).

This can be seen by trying to mount a filesystem made such as:

 mkfs.ext2 -F -b 1024 -m 0 -g 256 -N 3744 fsfile 1024

which yields:

 EXT2-fs error (device loop0): ext2_check_descriptors: Inode table for group 0 not in group (block 101)!
 EXT2-fs: group descriptors corrupted!

There is a similar bug in e2fsprogs, patch already sent for that.

(I wonder if inside(), outside(), and/or in_range() should someday be
used in this and other tests throughout the ext filesystems...)

Signed-off-by: Eric Sandeen 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: Remove slab destructors from kmem_cache_create().

2007-07-20T01:11:58+00:00

Slab destructors were no longer supported after Christoph's
c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been
BUGs for both slab and slub, and slob never supported them
either.

This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).

Signed-off-by: Paul Mundt

some kmalloc/memset ->kzalloc (tree wide)

2007-07-19T17:04:50+00:00

Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).

Here is a short excerpt of the semantic patch performing
this transformation:

@@
type T2;
expression x;
identifier f,fld;
expression E;
expression E1,E2;
expression e1,e2,e3,y;
statement S;
@@

 x =
- kmalloc
+ kzalloc
  (E1,E2)
  ...  when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
- memset((T2)x,0,E1);

@@
expression E1,E2,E3;
@@

- kzalloc(E1 * E2,E3)
+ kcalloc(E1,E2,E3)

[akpm@linux-foundation.org: get kcalloc args the right way around]
Signed-off-by: Yoann Padioleau 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Acked-by: Russell King 
Cc: Bryan Wu 
Acked-by: Jiri Slaby 
Cc: Dave Airlie 
Acked-by: Roland Dreier 
Cc: Jiri Kosina 
Acked-by: Dmitry Torokhov 
Cc: Benjamin Herrenschmidt 
Acked-by: Mauro Carvalho Chehab 
Acked-by: Pierre Ossman 
Cc: Jeff Garzik 
Cc: "David S. Miller" 
Acked-by: Greg KH 
Cc: James Bottomley 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds