Re: suppress page allocation failure warnings from sys_listxattr

From: Joe Perches
Date: Wed Mar 28 2012 - 21:28:47 EST


On Wed, 2012-03-28 at 18:10 -0700, Andrew Morton wrote:
> On Wed, 28 Mar 2012 20:54:42 -0400 Dave Jones <davej@xxxxxxxxxx> wrote:
> > > Yup. How does the below look?
> > Don't see anything immediately wrong with it.
> > Any thoughts on what to do about the similar problem in setxattr ? (memdup_user)
[]
> diff -puN fs/xattr.c~fs-xattrc-setxattr-improve-handling-of-allocation-failures fs/xattr.c
[]
> @@ -334,13 +335,25 @@ setxattr(struct dentry *d, const char __
[]
> + kvalue = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
> + if (!kvalue) {
> + vvalue = vmalloc(size);
[]
> + if (vvalue)
> + vfree(vvalue);
> + else
> + kfree(kvalue);
> return error;

These patterns are pretty common, maybe create a standard helper?

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