hold i_mutex for inode in zpl_aio_write

vpsfreecz · Sep 5, 2019 · 3089152 · 3089152
1 parent 267cb6b
commit 3089152
Showing 1 changed file with 10 additions and 4 deletions.
diff --git a/module/zfs/zpl_file.c b/module/zfs/zpl_file.c
@@ -468,16 +468,22 @@ zpl_aio_write(struct kiocb *kiocb, const struct iovec *iovp,
 	size_t count;
 	ssize_t ret;
 
+	mutex_lock(&ip->i_mutex);
+
 	ret = generic_segment_checks(iovp, &nr_segs, &count, VERIFY_READ);
 	if (ret)
-		return (ret);
+		goto out;
 
 	ret = generic_write_checks(file, &pos, &count, isblk);
 	if (ret)
-		return (ret);
+		goto out;
 
-	return (zpl_iter_write_common(kiocb, iovp, nr_segs, count,
-	    UIO_USERSPACE, 0));
+	ret = zpl_iter_write_common(kiocb, iovp, nr_segs, count,
+				    UIO_USERSPACE, 0);
+
+out:
+	mutex_unlock(&ip->i_mutex);
+	return (ret);
 }
 #endif /* HAVE_VFS_RW_ITERATE */