migration: migrate_vmas should check "vma"
migrate_vmas() should check "vma" not "vma->vm_next" for for-loop condition. Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -1129,7 +1129,7 @@ int migrate_vmas(struct mm_struct *mm, const nodemask_t *to,
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struct vm_area_struct *vma;
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int err = 0;
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for(vma = mm->mmap; vma->vm_next && !err; vma = vma->vm_next) {
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for (vma = mm->mmap; vma && !err; vma = vma->vm_next) {
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if (vma->vm_ops && vma->vm_ops->migrate) {
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err = vma->vm_ops->migrate(vma, to, from, flags);
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if (err)
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