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fs: Convert kiocb rw_hint from enum to u16

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In order to avoid kiocb bloat for per command iopriority support, rw_hint
is converted from enum to a u16. Added a guard around ki_hint assignment.

Signed-off-by: Adam Manzanares <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Adam Manzanares 2018-05-22 10:52:18 -07:00 • committed by Al Viro
commit fc28724d67
2 changed files with 12 additions and 3 deletions
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2
fs/aio.c
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@ -1434,7 +1434,7 @@ static int aio_prep_rw(struct kiocb *req, struct iocb *iocb)
req->ki_flags = iocb_flags(req->ki_filp);
if (iocb->aio_flags & IOCB_FLAG_RESFD)
req->ki_flags |= IOCB_EVENTFD;
req->ki_hint = file_write_hint(req->ki_filp);
req->ki_hint = ki_hint_validate(file_write_hint(req->ki_filp));
ret = kiocb_set_rw_flags(req, iocb->aio_rw_flags);
if (unlikely(ret))
fput(req->ki_filp);