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Wed, 11 Nov 2026 20:31:25 +0000 (UTC) Received: from dhowells-thinkpadp1gen8.rmtgb.csb (headnet04.pony-001.prod.iad2.dc.redhat.com [10.2.32.116]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id CD2C11966650; Wed, 11 Nov 2026 20:31:20 +0000 (UTC) From: David Howells To: Christian Brauner Cc: David Howells , Paulo Alcantara , Matthew Wilcox , Namjae Jeon , Marc Dionne , Stefan Metzmacher , Eric Van Hensbergen , Dominique Martinet , Ilya Dryomov , netfs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Christoph Hellwig Subject: [PATCH v17 07/17] afs: Fix an inconsistency in the symlink code Date: Wed, 11 Nov 2026 20:30:20 +0000 Message-ID: <20261111203034.2126314-8-dhowells@redhat.com> In-Reply-To: <20261111203034.2126314-1-dhowells@redhat.com> References: <20261111203034.2126314-1-dhowells@redhat.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Fix the afs symlink code to set ->directory_size to the size of the buffer, not PAGE_SIZE-1 or i_size. This doesn't actually change the operation since the value is ignored by the symlink writeback path (which writes to the cache). This was spotted by Claude. Signed-off-by: David Howells cc: Paulo Alcantara cc: Matthew Wilcox cc: Marc Dionne cc: Christoph Hellwig cc: linux-afs@lists.infradead.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org --- fs/afs/symlink.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/afs/symlink.c b/fs/afs/symlink.c index 6b8c122877ca..a1dbd552ddff 100644 --- a/fs/afs/symlink.c +++ b/fs/afs/symlink.c @@ -99,7 +99,7 @@ static ssize_t afs_do_read_symlink(struct afs_vnode *vnode) ret = netfs_alloc_folioq_buffer(NULL, &vnode->directory, &cur_size, PAGE_SIZE, mapping_gfp_mask(vnode->netfs.inode.i_mapping)); - vnode->directory_size = PAGE_SIZE - 1; + vnode->directory_size = PAGE_SIZE; if (ret < 0) return ret; } @@ -116,7 +116,6 @@ static ssize_t afs_do_read_symlink(struct afs_vnode *vnode) trace_afs_file_error(vnode, -EFBIG, afs_file_error_dir_big); return -EFBIG; } - vnode->directory_size = i_size; /* Copy the symlink. */ symlink = kmalloc_flex(struct afs_symlink, content, i_size + 1);