Re: [RFC] vfs: don't bother clearing close_on_exec bit for unused fds

From: Eric Dumazet
Date: Tue Nov 03 2015 - 20:31:21 EST


On Tue, 2015-11-03 at 10:41 +0100, Rasmus Villemoes wrote:

> @@ -667,7 +667,7 @@ void do_close_on_exec(struct files_struct *files)
> fdt = files_fdtable(files);
> if (fd >= fdt->max_fds)
> break;
> - set = fdt->close_on_exec[i];
> + set = fdt->close_on_exec[i] & fdt->open_fds[i];
> if (!set)
> continue;
> fdt->close_on_exec[i] = 0;

If you don't bother, why leaving this final fdt->close_on_exec[i] = 0 ?



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