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Date: Tue, 17 Jul 2012 09:28:09 -0500 (CDT) From: Christoph Lameter <cl@...ux.com> To: Joonsoo Kim <js1304@...il.com> cc: akpm@...ux-foundation.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org, Sasha Levin <levinsasha928@...il.com> Subject: Re: [PATCH 2/4 v2] mm: fix possible incorrect return value of migrate_pages() syscall On Tue, 17 Jul 2012, Joonsoo Kim wrote: > @@ -1382,6 +1382,8 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode, > > err = do_migrate_pages(mm, old, new, > capable(CAP_SYS_NICE) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE); > + if (err > 0) > + err = -EBUSY; > > mmput(mm); > out: Why not have do_migrate_pages() return EBUSY if we do not need the number of failed/retried pages? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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