linux-toradex.git/fs/afs, branch v2.6.16.42

add loglevel to printk in fs/afs/cmservice.c

2006-01-11T00:52:40+00:00

This is a small patch that adds loglevel to a printk in
fs/afs/cmservice.c

Signed-off-by: Jesper Juhl 
Signed-off-by: Adrian Bunk

[PATCH] afs: remove unnecessary attribute((packed))

2006-01-09T04:14:07+00:00

Remove the unnecessary __attribute__((packed)) since the enum itself is packed
and not the location of it in the structure.

Signed-off-by: Jan Blunck 
Cc: David Howells 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] fix possible PAGE_CACHE_SHIFT overflows

2006-01-09T04:13:54+00:00

We've had two instances recently of overflows when doing

	64_bit_value = (32_bit_value << PAGE_CACHE_SHIFT)

I did a tree-wide grep of `<<.*PAGE_CACHE_SHIFT' and this is the result.

- afs_rxfs_fetch_descriptor.offset is of type off_t, which seems broken.

- jfs and jffs are limited to 4GB anyway.

- reiserfs map_block_for_writepage() takes an unsigned long for the block -
  it should take sector_t.  (It'll fail for huge filesystems with
  blocksizepage_base)

Cc: Oleg Drokin 
Cc: David Howells 
Cc: David Woodhouse 
Cc: 
Cc: Christoph Hellwig 
Cc: Anton Altaparmakov 
Cc: Jeff Dike 
Cc: Paolo 'Blaisorblade' Giarrusso 
Cc: Roman Zippel 
Cc: 
Cc: Miklos Szeredi 
Cc: Russell King 
Cc: Trond Myklebust 
Cc: Neil Brown 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fs/afs/callback.c should #include "cmservice.h"

2005-11-08T15:56:17+00:00

Every file should include the headers containing the prototypes for
it's global functions.

Signed-off-by: Adrian Bunk

[PATCH] kfree cleanup: fs

2005-11-07T15:54:06+00:00

This is the fs/ part of the big kfree cleanup patch.

Remove pointless checks for NULL prior to calling kfree() in fs/.

Signed-off-by: Jesper Juhl 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] afs: use generic_ro_fops

2005-11-07T15:53:41+00:00

afs actually had a write method that returned different errors depending on
whether some flag was set - better return the standard EINVAL errno.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] mm: split page table lock

2005-10-30T04:40:42+00:00

Christoph Lameter demonstrated very poor scalability on the SGI 512-way, with
a many-threaded application which concurrently initializes different parts of
a large anonymous area.

This patch corrects that, by using a separate spinlock per page table page, to
guard the page table entries in that page, instead of using the mm's single
page_table_lock.  (But even then, page_table_lock is still used to guard page
table allocation, and anon_vma allocation.)

In this implementation, the spinlock is tucked inside the struct page of the
page table page: with a BUILD_BUG_ON in case it overflows - which it would in
the case of 32-bit PA-RISC with spinlock debugging enabled.

Splitting the lock is not quite for free: another cacheline access.  Ideally,
I suppose we would use split ptlock only for multi-threaded processes on
multi-cpu machines; but deciding that dynamically would have its own costs.
So for now enable it by config, at some number of cpus - since the Kconfig
language doesn't support inequalities, let preprocessor compare that with
NR_CPUS.  But I don't think it's worth being user-configurable: for good
testing of both split and unsplit configs, split now at 4 cpus, and perhaps
change that to 8 later.

There is a benefit even for singly threaded processes: kswapd can be attacking
one part of the mm while another part is busy faulting.

Signed-off-by: Hugh Dickins 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] gfp_t: fs/*

2005-10-28T15:16:47+00:00

 - ->releasepage() annotated (s/int/gfp_t), instances updated
 - missing gfp_t in fs/* added
 - fixed misannotation from the original sweep caught by bitwise checks:
   XFS used __nocast both for gfp_t and for flags used by XFS allocator.
   The latter left with unsigned int __nocast; we might want to add a
   different type for those but for now let's leave them alone.  That,
   BTW, is a case when __nocast use had been actively confusing - it had
   been used in the same code for two different and similar types, with
   no way to catch misuses.  Switch of gfp_t to bitwise had caught that
   immediately...

One tricky bit is left alone to be dealt with later - mapping->flags is
a mix of gfp_t and error indications.  Left alone for now.

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

[PATCH] Fix up symlink function pointers

2005-08-20T01:08:21+00:00

This fixes up the symlink functions for the calling convention change:

 * afs, autofs4, befs, devfs, freevxfs, jffs2, jfs, ncpfs, procfs,
   smbfs, sysvfs, ufs, xfs - prototype change for ->follow_link()
 * befs, smbfs, xfs - same for ->put_link()

Signed-off-by: Linus Torvalds

[PATCH] Cleanup patch for process freezing

2005-06-26T00:10:13+00:00

1. Establish a simple API for process freezing defined in linux/include/sched.h:

   frozen(process)		Check for frozen process
   freezing(process)		Check if a process is being frozen
   freeze(process)		Tell a process to freeze (go to refrigerator)
   thaw_process(process)	Restart process
   frozen_process(process)	Process is frozen now

2. Remove all references to PF_FREEZE and PF_FROZEN from all
   kernel sources except sched.h

3. Fix numerous locations where try_to_freeze is manually done by a driver

4. Remove the argument that is no longer necessary from two function calls.

5. Some whitespace cleanup

6. Clear potential race in refrigerator (provides an open window of PF_FREEZE
   cleared before setting PF_FROZEN, recalc_sigpending does not check
   PF_FROZEN).

This patch does not address the problem of freeze_processes() violating the rule
that a task may only modify its own flags by setting PF_FREEZE. This is not clean
in an SMP environment. freeze(process) is therefore not SMP safe!

Signed-off-by: Christoph Lameter 
Signed-off-by: Linus Torvalds