linux-master/mm/ksm.c

191  * @anon_vma: pointer to anon_vma for this mm,address, when in stable tree
205 		struct anon_vma *anon_vma;	/* when stable */
745 	if (!vma || !(vma->vm_flags & VM_MERGEABLE) || !vma->anon_vma)
758 	 * to undo, we also need to drop a reference to the anon_vma.
760 	put_anon_vma(rmap_item->anon_vma);
870 		put_anon_vma(rmap_item->anon_vma);
1022 		put_anon_vma(rmap_item->anon_vma);
1226 			if (!(vma->vm_flags & VM_MERGEABLE) || !vma->anon_vma)
1394 	 * without holding anon_vma lock for write.  So when looking for a
1512 			 * PageAnon+anon_vma to PageKsm+NULL stable_node:
1556 	/* Unstable nid is in union with stable anon_vma: remove first */
1559 	/* Must get reference to anon_vma while still holding mmap_lock */
1560 	rmap_item->anon_vma = vma->anon_vma;
1561 	get_anon_vma(vma->anon_vma);
2645 		if (!vma->anon_vma)
2814 	if (vma->anon_vma) {
2952 		if (vma->anon_vma) {
3056 	struct anon_vma *anon_vma = folio_anon_vma(folio);
3066 	} else if (!anon_vma) {
3069 			anon_vma->root == vma->anon_vma->root) {
3120 		struct anon_vma *anon_vma = rmap_item->anon_vma;
3125 		if (!anon_vma_trylock_read(anon_vma)) {
3130 			anon_vma_lock_read(anon_vma);
3132 		anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root,
3157 				anon_vma_unlock_read(anon_vma);
3161 				anon_vma_unlock_read(anon_vma);
3165 		anon_vma_unlock_read(anon_vma);
3188 		struct anon_vma *av = rmap_item->anon_vma;