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| Started by | James Simmons <jsimmons@infradead.org> |
|---|---|
| First post | 2016-07-11 19:20 +0200 |
| Last post | 2016-07-18 17:30 +0200 |
| Articles | 4 — 3 participants |
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[PATCH] staging: lustre: o2iblnd: iov fixes for kiblnd_send James Simmons <jsimmons@infradead.org> - 2016-07-11 19:20 +0200
Re: [PATCH] staging: lustre: o2iblnd: iov fixes for kiblnd_send Oleg Drokin <oleg.drokin@intel.com> - 2016-07-15 07:10 +0200
Re: [PATCH] staging: lustre: o2iblnd: iov fixes for kiblnd_send Al Viro <viro@ZenIV.linux.org.uk> - 2016-07-15 07:20 +0200
Re: [PATCH] staging: lustre: o2iblnd: iov fixes for kiblnd_send James Simmons <jsimmons@infradead.org> - 2016-07-18 17:30 +0200
| From | James Simmons <jsimmons@infradead.org> |
|---|---|
| Date | 2016-07-11 19:20 +0200 |
| Subject | [PATCH] staging: lustre: o2iblnd: iov fixes for kiblnd_send |
| Message-ID | <rTN29-1BX-17@gated-at.bofh.it> |
With the move to iov_iter handling two issues merged
for the ko2iblnd driver. The first fix address a simple
typo of the wrong flag being used with iov_iter_kvec.
The second fix adds the payload offset to the payload
size.
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
index 3d597dc..437e149 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
@@ -1519,12 +1519,15 @@ kiblnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg)
/* payload is either all vaddrs or all pages */
LASSERT(!(payload_kiov && payload_iov));
- if (payload_kiov)
+ if (payload_kiov) {
iov_iter_bvec(&from, ITER_BVEC | WRITE,
- payload_kiov, payload_niov, payload_nob);
- else
- iov_iter_kvec(&from, ITER_BVEC | WRITE,
- payload_iov, payload_niov, payload_nob);
+ payload_kiov, payload_niov,
+ payload_nob + payload_offset);
+ } else {
+ iov_iter_kvec(&from, ITER_KVEC | WRITE,
+ payload_iov, payload_niov,
+ payload_nob + payload_offset);
+ }
iov_iter_advance(&from, payload_offset);
switch (type) {
--
2.7.4
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| From | Oleg Drokin <oleg.drokin@intel.com> |
|---|---|
| Date | 2016-07-15 07:10 +0200 |
| Message-ID | <rV3xT-2IL-3@gated-at.bofh.it> |
| In reply to | #1440782 |
On Jul 11, 2016, at 1:18 PM, James Simmons wrote:
> With the move to iov_iter handling two issues merged
> for the ko2iblnd driver. The first fix address a simple
> typo of the wrong flag being used with iov_iter_kvec.
> The second fix adds the payload offset to the payload
> size.
>
> Signed-off-by: James Simmons <jsimmons@infradead.org>
> ---
> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c | 13 ++++++++-----
> 1 file changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
> index 3d597dc..437e149 100644
> --- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
> +++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
> @@ -1519,12 +1519,15 @@ kiblnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg)
> /* payload is either all vaddrs or all pages */
> LASSERT(!(payload_kiov && payload_iov));
>
> - if (payload_kiov)
> + if (payload_kiov) {
The braces are in fact going to make checkpatch complain that we do not
need them here.
> iov_iter_bvec(&from, ITER_BVEC | WRITE,
> - payload_kiov, payload_niov, payload_nob);
> - else
> - iov_iter_kvec(&from, ITER_BVEC | WRITE,
> - payload_iov, payload_niov, payload_nob);
> + payload_kiov, payload_niov,
> + payload_nob + payload_offset);
Why are we adding the offset to number of bytes here?
> + } else {
> + iov_iter_kvec(&from, ITER_KVEC | WRITE,
> + payload_iov, payload_niov,
> + payload_nob + payload_offset);
> + }
> iov_iter_advance(&from, payload_offset);
Ah, I guess we added it there to then subtract here?
Do you mind if I just merge this change into Al's patch with you as another
Signed-off-by line instead?
Since we caught this early, probably no point in having a breakage point in
the history as it might break a future bisect.
> switch (type) {
> --
> 2.7.4
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| From | Al Viro <viro@ZenIV.linux.org.uk> |
|---|---|
| Date | 2016-07-15 07:20 +0200 |
| Message-ID | <rV3HA-2Ms-15@gated-at.bofh.it> |
| In reply to | #1443944 |
On Fri, Jul 15, 2016 at 01:01:35AM -0400, Oleg Drokin wrote:
> > + } else {
> > + iov_iter_kvec(&from, ITER_KVEC | WRITE,
> > + payload_iov, payload_niov,
> > + payload_nob + payload_offset);
> > + }
> > iov_iter_advance(&from, payload_offset);
>
> Ah, I guess we added it there to then subtract here?
Yes (and that actually fixes a real bug there).
> Do you mind if I just merge this change into Al's patch with you as another
> Signed-off-by line instead?
> Since we caught this early, probably no point in having a breakage point in
> the history as it might break a future bisect.
No objections from me. FWIW, I'd rather have all of that go through your
tree - it's independent from everything else in vfs.git and pulls quite
a bit from yours, so...
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| From | James Simmons <jsimmons@infradead.org> |
|---|---|
| Date | 2016-07-18 17:30 +0200 |
| Message-ID | <rWiEy-7XO-3@gated-at.bofh.it> |
| In reply to | #1443944 |
> On Jul 11, 2016, at 1:18 PM, James Simmons wrote:
>
> > With the move to iov_iter handling two issues merged
> > for the ko2iblnd driver. The first fix address a simple
> > typo of the wrong flag being used with iov_iter_kvec.
> > The second fix adds the payload offset to the payload
> > size.
> >
> > Signed-off-by: James Simmons <jsimmons@infradead.org>
> > ---
> > drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c | 13 ++++++++-----
> > 1 file changed, 8 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
> > index 3d597dc..437e149 100644
> > --- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
> > +++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
> > @@ -1519,12 +1519,15 @@ kiblnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg)
> > /* payload is either all vaddrs or all pages */
> > LASSERT(!(payload_kiov && payload_iov));
> >
> > - if (payload_kiov)
> > + if (payload_kiov) {
>
> The braces are in fact going to make checkpatch complain that we do not
> need them here.
>
> > iov_iter_bvec(&from, ITER_BVEC | WRITE,
> > - payload_kiov, payload_niov, payload_nob);
> > - else
> > - iov_iter_kvec(&from, ITER_BVEC | WRITE,
> > - payload_iov, payload_niov, payload_nob);
> > + payload_kiov, payload_niov,
> > + payload_nob + payload_offset);
>
> Why are we adding the offset to number of bytes here?
>
> > + } else {
> > + iov_iter_kvec(&from, ITER_KVEC | WRITE,
> > + payload_iov, payload_niov,
> > + payload_nob + payload_offset);
> > + }
> > iov_iter_advance(&from, payload_offset);
>
> Ah, I guess we added it there to then subtract here?
>
> Do you mind if I just merge this change into Al's patch with you as another
> Signed-off-by line instead?
Sure, I'm fine with that. All I care is that this is merged.
> Since we caught this early, probably no point in having a breakage point in
> the history as it might break a future bisect.
>
>
> > switch (type) {
> > --
> > 2.7.4
>
>
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