linux-toradex.git/include/linux, branch v2.6.16.15

[PATCH] Simplify proc/devices and fix early termination regression

2006-05-01T19:03:43+00:00

Repair /proc/devices early-termination regression.

2.6.16 broke /proc/devices.  An application often gets an
EOF before the end of data is reached, if that application
uses a series of short read(2)s to access the data.  I have
used read buffers of varying sizes with varying degrees
of unsuccess (larger sizes get further into the data than
smaller sizes, following a simple pattern).  It appears
that the only safe way to get the data is to use a single
read buffer larger than all the data in /proc/devices.

The following example demonstates the problem:

    # dd if=/proc/devices bs=1
    Character devices:
      1 mem
    27+0 records in
    27+0 records out

This patch is a backport of the fix recently accepted to
Linus's tree:

    commit 68eef3b4791572ecb70249c7fb145bb3742dd899
    [PATCH] Simplify proc/devices and fix early termination regression

It replaces the complex, state-machine algorithm introduced
in 2.6.16 with a simple algorithm, modeled on the implementation
of /proc/interrupts.

[akpm@osdl.org: cleanups, simplifications]

Signed-off-by: Joe Korty 
Signed-off-by: Greg Kroah-Hartman

[PATCH] for_each_possible_cpu

2006-05-01T19:03:42+00:00

Backport for_each_possible_cpu() into 2.6.16.  Fixes the alpha build, and any
future occurrences.

Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

[PATCH] Fix buddy list race that could lead to page lru list corruptions

2006-04-17T20:16:05+00:00

Rohit found an obscure bug causing buddy list corruption.

page_is_buddy is using a non-atomic test (PagePrivate && page_count == 0)
to determine whether or not a free page's buddy is itself free and in the
buddy lists.

Each of the conjuncts may be true at different times due to unrelated
conditions, so the non-atomic page_is_buddy test may find each conjunct to
be true even if they were not both true at the same time (ie. the page was
not on the buddy lists).

Signed-off-by: Martin Bligh 
Signed-off-by: Rohit Seth 
Signed-off-by: Nick Piggin 
Signed-off-by: KAMEZAWA Hiroyuki 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

[PATCH] kdump proc vmcore size oveflow fix

2006-04-07T16:44:30+00:00

A couple of /proc/vmcore data structures overflow with 32bit systems having
memory more than 4G.  This patch fixes those.

Signed-off-by: Ken'ichi Ohmichi 
Signed-off-by: Vivek Goyal 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

[PATCH] fbcon: Fix big-endian bogosity in slow_imageblit()

2006-04-07T16:44:29+00:00

The monochrome->color expansion routine that handles bitmaps which have
(widths % 8) != 0 (slow_imageblit) produces corrupt characters in big-endian.
This is caused by a bogus bit test in slow_imageblit().

Fix.

Signed-off-by: Antonino Daplas 
Acked-by: Herbert Poetzl 
Signed-off-by: Greg Kroah-Hartman

[PATCH] DM: Fix bug: BIO_RW_BARRIER requests to md/raid1 hang.

2006-03-28T06:47:31+00:00

Both R1BIO_Barrier and R1BIO_Returned are 4 !!!!

This means that barrier requests don't get returned (i.e.  b_endio called)
because it looks like they already have been.

Signed-off-by: Neil Brown 
Signed-off-by: Andrew Morton 
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

[PATCH] rtc.h broke strace(1) builds

2006-03-28T06:47:31+00:00

Git patch 52dfa9a64cfb3dd01fa1ee1150d589481e54e28e

	[PATCH] move rtc_interrupt() prototype to rtc.h

broke strace(1) builds.  The below moves the kernel-only additions lower,
under the already provided #ifdef __KERNEL__ statement.

Signed-off-by: Andrew Morton 
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

[PATCH] get_cpu_sysdev() signedness fix

2006-03-28T06:47:30+00:00

Doing (int < NR_CPUS) doesn't dtrt if it's negative..

Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

[TG3]: 40-bit DMA workaround part 2

2006-03-19T21:21:12+00:00

The 40-bit DMA workaround recently implemented for 5714, 5715, and
5780 needs to be expanded because there may be other tg3 devices
behind the EPB Express to PCIX bridge in the 5780 class device.

For example, some 4-port card or mother board designs have 5704 behind
the 5714.

All devices behind the EPB require the 40-bit DMA workaround.

Thanks to Chris Elmquist again for reporting the problem and testing
the patch.

Signed-off-by: Michael Chan 
Signed-off-by: David S. Miller

[PATCH] remove __put_task_struct_cb export again

2006-03-11T17:19:34+00:00

The patch '[PATCH] RCU signal handling' [1] added an export for
__put_task_struct_cb, a put_task_struct helper newly introduced in that
patch.  But the put_task_struct couldn't be used modular previously as
__put_task_struct wasn't exported.  There are not callers of it in modular
code, and it shouldn't be exported because we don't want drivers to hold
references to task_structs.

This patch removes the export and folds __put_task_struct into
__put_task_struct_cb as there's no other caller.

[1] http://www2.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e56d090310d7625ecb43a1eeebd479f04affb48b

Signed-off-by: Christoph Hellwig 
Acked-by: Paul E. McKenney 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds