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authorEric W. Biederman <ebiederm@xmission.com>2020-12-09 15:42:57 -0600
committerEric W. Biederman <ebiederm@xmission.com>2020-12-10 12:39:00 -0600
commit878f12dbb8f514799d126544d59be4d2675caac3 (patch)
treeec5a16bc7ca1fd440c8aa9f2bf29c21cd3189c62 /kernel/fork.c
parent3650b228f83adda7e5ee532e2b90429c03f7b9ec (diff)
exec: Don't open code get_close_on_exec
Al Viro pointed out that using the phrase "close_on_exec(fd, rcu_dereference_raw(current->files->fdt))" instead of wrapping it in rcu_read_lock(), rcu_read_unlock() is a very questionable optimization[1]. Once wrapped with rcu_read_lock()/rcu_read_unlock() that phrase becomes equivalent the helper function get_close_on_exec so simplify the code and make it more robust by simply using get_close_on_exec. [1] https://lkml.kernel.org/r/20201207222214.GA4115853@ZenIV.linux.org.uk Suggested-by: Al Viro <viro@ftp.linux.org.uk> Link: https://lkml.kernel.org/r/87k0tqr6zi.fsf_-_@x220.int.ebiederm.org Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'kernel/fork.c')
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