diff options
author | Stefani Seibold <stefani@seibold.net> | 2013-11-05 16:57:49 +1100 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2013-11-05 16:57:49 +1100 |
commit | 3bbfe1d952cd4d2e29bfcb31f109b5d74d1aa847 (patch) | |
tree | 295370de2cdf00e7df17d5608a8db5b04c122027 /mm | |
parent | fd47e35536a2dca6a73e9f0a2a896ae6cd14e83c (diff) |
kfifo API type safety
This patch enhances the type safety for the kfifo API. It is now safe to
put const data into a non const FIFO and the API will now generate a
compiler warning when reading from the fifo where the destination address
is pointing to a const variable.
As a side effect the kfifo_put() does now expect the value of an element
instead a pointer to the element. This was suggested Russell King. It
make the handling of the kfifo_put easier since there is no need to create
a helper variable for getting the address of a pointer or to pass integers
of different sizes.
IMHO the API break is okay, since there are currently only six users of
kfifo_put().
The code is also cleaner by kicking out the "if (0)" expressions.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r-- | mm/memory-failure.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index f9d78ec7831f..b7c171602ba1 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1269,7 +1269,7 @@ void memory_failure_queue(unsigned long pfn, int trapno, int flags) mf_cpu = &get_cpu_var(memory_failure_cpu); spin_lock_irqsave(&mf_cpu->lock, proc_flags); - if (kfifo_put(&mf_cpu->fifo, &entry)) + if (kfifo_put(&mf_cpu->fifo, entry)) schedule_work_on(smp_processor_id(), &mf_cpu->work); else pr_err("Memory failure: buffer overflow when queuing memory failure at %#lx\n", |