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* calculate at the time we set FMODE_OPENED (do_dentry_open() for normal opens, alloc_file() for pipe()/socket()/etc.) * update when handling F_SETFL * keep in a new field - file->f_iocb_flags; since that thing is needed only before the refcount reaches zero, we can put it into the same anon union where ->f_rcuhead and ->f_llist live - those are used only after refcount reaches zero. Reviewed-by: Christian Brauner (Microsoft) <brauner@kernel.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>