Re: [PATCH 00/14] GFS

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi David,

On 8/2/05, David Teigland <[email protected]> wrote:
> Hi, GFS (Global File System) is a cluster file system that we'd like to
> see added to the kernel.  The 14 patches total about 900K so I won't send
> them to the list unless that's requested.  Comments and suggestions are
> welcome.  Thanks

> +#define kmalloc_nofail(size, flags) \
> +	gmalloc_nofail((size), (flags), __FILE__, __LINE__)

[snip]

> +void *gmalloc_nofail_real(unsigned int size, int flags, char *file,
> +			  unsigned int line)
> +{
> +	void *x;
> +	for (;;) {
> +		x = kmalloc(size, flags);
> +		if (x)
> +			return x;
> +		if (time_after_eq(jiffies, gfs2_malloc_warning + 5 * HZ)) {
> +			printk("GFS2: out of memory: %s, %u\n",
> +			       __FILE__, __LINE__);
> +			gfs2_malloc_warning = jiffies;
> +		}
> +		yield();

This does not belong in a filesystem. It also seems like a very bad
idea. What are you trying to do here? If you absolutely must not fail,
use __GFP_NOFAIL instead.

> +	}
> +}
> +
> +#if defined(GFS2_MEMORY_SIMPLE)
> +
> +atomic_t gfs2_memory_count;
> +
> +void gfs2_memory_add_i(void *data, char *file, unsigned int line)
> +{
> +	atomic_inc(&gfs2_memory_count);
> +}
> +
> +void gfs2_memory_rm_i(void *data, char *file, unsigned int line)
> +{
> +	if (data)
> +		atomic_dec(&gfs2_memory_count);
> +}
> +
> +void *gmalloc(unsigned int size, int flags, char *file, unsigned int line)
> +{
> +	void *data = kmalloc(size, flags);
> +	if (data)
> +		atomic_inc(&gfs2_memory_count);
> +	return data;
> +}
> +
> +void *gmalloc_nofail(unsigned int size, int flags, char *file,
> +		     unsigned int line)
> +{
> +	atomic_inc(&gfs2_memory_count);
> +	return gmalloc_nofail_real(size, flags, file, line);
> +}
> +
> +void gfree(void *data, char *file, unsigned int line)
> +{
> +	if (data) {
> +		atomic_dec(&gfs2_memory_count);
> +		kfree(data);
> +	}
> +}

-mm has memory leak detection patches and there are others floating
around. Please do not introduce yet another subsystem-specific debug allocator.

                                    Pekka
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux