[CRIU] [PATCH 15/17] file: In f_dupfd read RLIMIT_NOFILE once.

[Christian Brauner]

On Mon, Aug 17, 2020 at 05:04:23PM -0500, Eric W. Biederman wrote:
> Simplify the code, and remove the chance of races by reading
> RLIMIT_NOFILE only once in f_dupfd.
> 
> Pass the read value of RLIMIT_NOFILE into alloc_fd which is the other
> location the rlimit was read in f_dupfd.  As f_dupfd is the only
> caller of alloc_fd this changing alloc_fd is trivially safe.
> 
> Further this causes alloc_fd to take all of the same arguments as
> __alloc_fd except for the files_struct argument.
> 
> Signed-off-by: "Eric W. Biederman" <ebiederm at xmission.com>
> ---

Acked-by: Christian Brauner <christian.brauner at ubuntu.com>