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Sat, 17 Feb 2024 07:31:39 +0000 (GMT) From: Donet Tom To: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Aneesh Kumar , Huang Ying , Dave Hansen , Mel Gorman , Ben Widawsky , Feng Tang , Michal Hocko , Andrea Arcangeli , Peter Zijlstra , Ingo Molnar , Rik van Riel , Johannes Weiner , Matthew Wilcox , Mike Kravetz , Vlastimil Babka , Dan Williams , Hugh Dickins , Kefeng Wang , Suren Baghdasaryan Subject: [PATCH 2/3] mm/mempolicy: Avoid the fallthrough with MPOLD_BIND in mpol_misplaced. Date: Sat, 17 Feb 2024 01:31:34 -0600 Message-Id: X-Mailer: git-send-email 2.39.3 In-Reply-To: <9c3f7b743477560d1c5b12b8c111a584a2cc92ee.1708097962.git.donettom@linux.ibm.com> References: <9c3f7b743477560d1c5b12b8c111a584a2cc92ee.1708097962.git.donettom@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: RFIikoKL5ffHBWAyVD9mrafMHgu0IRNd X-Proofpoint-ORIG-GUID: sLIiKqq1v8CAfDTE3aGBn-xbDlUw40Kv X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-17_04,2024-02-16_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 mlxscore=0 phishscore=0 spamscore=0 malwarescore=0 bulkscore=0 adultscore=0 mlxlogscore=999 impostorscore=0 clxscore=1015 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402170058 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791130540280480071 X-GMAIL-MSGID: 1791130540280480071 We will update MPOL_PREFERRED_MANY in the follow up patch. This change is required for that. Signed-off-by: Aneesh Kumar K.V (IBM) Signed-off-by: Donet Tom --- mm/mempolicy.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 8478574c000c..73d698e21dae 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2515,7 +2515,15 @@ int mpol_misplaced(struct folio *folio, struct vm_area_struct *vma, break; goto out; } - fallthrough; + + if (node_isset(curnid, pol->nodes)) + goto out; + z = first_zones_zonelist( + node_zonelist(thisnid, GFP_HIGHUSER), + gfp_zone(GFP_HIGHUSER), + &pol->nodes); + polnid = zone_to_nid(z->zone); + break; case MPOL_PREFERRED_MANY: /*