fs: RWF_NOWAIT should imply IOCB_NOIO

With the change allowing read-ahead for IOCB_NOWAIT, we changed the RWF_NOWAIT semantics of only doing cached reads. Since we know have IOCB_NOIO to manage that specific side of it, just make RWF_NOWAIT imply IOCB_NOIO as well to restore the previous behavior.

Jens Axboe committed 6 years ago

Commit efa84801 parent 51a4cc11 file · +1 −1Browse files

Showing the changes to include/linux (1 of 1 file). Show all

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include/linux/fs.h+1−1

@@ -3293,7 +3293,7 @@ static inline int kiocb_set_rw_flags(struct kiocb *ki, rwf_t flags) · 3292 unmodified lines
3293	3293	if (flags & RWF_NOWAIT) {
3294	3294	if (!(ki->ki_filp->f_mode & FMODE_NOWAIT))
3295	3295	return -EOPNOTSUPP;
3296		− kiocb_flags \|= IOCB_NOWAIT;
	3296	+ kiocb_flags \|= IOCB_NOWAIT \| IOCB_NOIO;
3297	3297	}
3298	3298	if (flags & RWF_HIPRI)
3299	3299	kiocb_flags \|= IOCB_HIPRI;