Re: [PATCH v2 1/2] open: add close_range()
From: Oleg Nesterov <oleg@redhat.com>
Date: 2019-05-23 16:20:53
Also in:
linux-alpha, linux-api, linux-arch, linux-arm-kernel, linux-fsdevel, linux-kselftest, linux-mips, linux-s390, linux-sh, lkml, sparclinux
On 05/23, Christian Brauner wrote:
+int __close_range(struct files_struct *files, unsigned fd, unsigned max_fd)
+{
+ unsigned int cur_max;
+
+ if (fd > max_fd)
+ return -EINVAL;
+
+ rcu_read_lock();
+ cur_max = files_fdtable(files)->max_fds;
+ rcu_read_unlock();
+
+ /* cap to last valid index into fdtable */
+ max_fd = max(max_fd, (cur_max - 1));^^^ Hmm. min() ? Oleg.