From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: stable@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
patches@lists.linux.dev,
Dean Luick <dean.luick@cornelisnetworks.com>,
Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>,
Leon Romanovsky <leon@kernel.org>,
Jason Gunthorpe <jgg@nvidia.com>, Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.15 09/22] IB/hfi1: Assign npages earlier
Date: Wed, 1 Mar 2023 19:08:42 +0100 [thread overview]
Message-ID: <20230301180653.026876800@linuxfoundation.org> (raw)
In-Reply-To: <20230301180652.658125575@linuxfoundation.org>
From: Dean Luick <dean.luick@cornelisnetworks.com>
[ Upstream commit f9c47b2caa7ffc903ec950b454b59c209afe3182 ]
Improve code clarity and enable earlier use of
tidbuf->npages by moving its assignment to
structure creation time.
Signed-off-by: Dean Luick <dean.luick@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Link: https://lore.kernel.org/r/167329104884.1472990.4639750192433251493.stgit@awfm-02.cornelisnetworks.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/hfi1/user_exp_rcv.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.c b/drivers/infiniband/hw/hfi1/user_exp_rcv.c
index ba930112c1624..1d2020c30ef3b 100644
--- a/drivers/infiniband/hw/hfi1/user_exp_rcv.c
+++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.c
@@ -160,16 +160,11 @@ static void unpin_rcv_pages(struct hfi1_filedata *fd,
static int pin_rcv_pages(struct hfi1_filedata *fd, struct tid_user_buf *tidbuf)
{
int pinned;
- unsigned int npages;
+ unsigned int npages = tidbuf->npages;
unsigned long vaddr = tidbuf->vaddr;
struct page **pages = NULL;
struct hfi1_devdata *dd = fd->uctxt->dd;
- /* Get the number of pages the user buffer spans */
- npages = num_user_pages(vaddr, tidbuf->length);
- if (!npages)
- return -EINVAL;
-
if (npages > fd->uctxt->expected_count) {
dd_dev_err(dd, "Expected buffer too big\n");
return -EINVAL;
@@ -196,7 +191,6 @@ static int pin_rcv_pages(struct hfi1_filedata *fd, struct tid_user_buf *tidbuf)
return pinned;
}
tidbuf->pages = pages;
- tidbuf->npages = npages;
fd->tid_n_pinned += pinned;
return pinned;
}
@@ -274,6 +268,7 @@ int hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd,
mutex_init(&tidbuf->cover_mutex);
tidbuf->vaddr = tinfo->vaddr;
tidbuf->length = tinfo->length;
+ tidbuf->npages = num_user_pages(tidbuf->vaddr, tidbuf->length);
tidbuf->psets = kcalloc(uctxt->expected_count, sizeof(*tidbuf->psets),
GFP_KERNEL);
if (!tidbuf->psets) {
--
2.39.0
next prev parent reply other threads:[~2023-03-01 18:11 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-01 18:08 [PATCH 5.15 00/22] 5.15.97-rc1 review Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 01/22] ionic: refactor use of ionic_rx_fill() Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 02/22] Fix XFRM-I support for nested ESP tunnels Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 03/22] arm64: dts: rockchip: drop unused LED mode property from rk3328-roc-cc Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 04/22] ARM: dts: rockchip: add power-domains property to dp node on rk3288 Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 05/22] HID: elecom: add support for TrackBall 056E:011C Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 06/22] ACPI: NFIT: fix a potential deadlock during NFIT teardown Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 07/22] btrfs: send: limit number of clones and allocated memory size Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 08/22] ASoC: rt715-sdca: fix clock stop prepare timeout issue Greg Kroah-Hartman
2023-03-01 18:08 ` Greg Kroah-Hartman [this message]
2023-03-01 18:08 ` [PATCH 5.15 10/22] neigh: make sure used and confirmed times are valid Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 11/22] HID: core: Fix deadloop in hid_apply_multiplier Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 12/22] x86/cpu: Add Lunar Lake M Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 13/22] staging: mt7621-dts: change palmbus address to lower case Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 14/22] bpf: bpf_fib_lookup should not return neigh in NUD_FAILED state Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 15/22] net: Remove WARN_ON_ONCE(sk->sk_forward_alloc) from sk_stream_kill_queues() Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 16/22] vc_screen: dont clobber return value in vcs_read Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 17/22] scripts/tags.sh: Invoke realpath via xargs Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 18/22] scripts/tags.sh: fix incompatibility with PCRE2 Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 19/22] usb: dwc3: pci: add support for the Intel Meteor Lake-M Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 20/22] USB: serial: option: add support for VW/Skoda "Carstick LTE" Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 21/22] usb: gadget: u_serial: Add null pointer check in gserial_resume Greg Kroah-Hartman
2023-03-01 18:08 ` [PATCH 5.15 22/22] USB: core: Dont hold device lock while reading the "descriptors" sysfs file Greg Kroah-Hartman
2023-03-01 21:27 ` [PATCH 5.15 00/22] 5.15.97-rc1 review Slade Watkins
2023-03-01 21:50 ` Florian Fainelli
2023-03-02 1:46 ` Shuah Khan
2023-03-02 7:27 ` Jon Hunter
2023-03-02 9:20 ` Bagas Sanjaya
2023-03-02 11:35 ` Sudip Mukherjee (Codethink)
2023-03-02 13:32 ` Naresh Kamboju
2023-03-03 1:30 ` Guenter Roeck
2023-03-03 6:30 ` Ron Economos
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