From: john.hubbard@gmail.com
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Christoph Hellwig" <hch@infradead.org>,
"Dan Williams" <dan.j.williams@intel.com>,
"Dave Chinner" <david@fromorbit.com>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Ira Weiny" <ira.weiny@intel.com>, "Jan Kara" <jack@suse.cz>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"Jérôme Glisse" <jglisse@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
amd-gfx@lists.freedesktop.org, ceph-devel@vger.kernel.org,
devel@driverdev.osuosl.org, devel@lists.orangefs.org,
dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-block@vger.kernel.org, linux-crypto@vger.kernel.org,
linux-fbdev@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-media@vger.kernel.org, linux-mm@kvack.org,
linux-nfs@vger.kernel.org, linux-rdma@vger.kernel.org,
linux-rpi-kernel@lists.infradead.org, linux-xfs@vger.kernel.org,
netdev@vger.kernel.org, rds-devel@oss.oracle.com,
sparclinux@vger.kernel.org, x86@kernel.org,
xen-devel@lists.xenproject.org,
"John Hubbard" <jhubbard@nvidia.com>,
"Daniel Black" <daniel@linux.ibm.com>,
"Matthew Wilcox" <willy@infradead.org>,
"Mike Kravetz" <mike.kravetz@oracle.com>
Subject: [PATCH v3 41/41] mm/ksm: convert put_page() to put_user_page*()
Date: Tue, 6 Aug 2019 18:33:40 -0700 [thread overview]
Message-ID: <20190807013340.9706-42-jhubbard@nvidia.com> (raw)
In-Reply-To: <20190807013340.9706-1-jhubbard@nvidia.com>
From: John Hubbard <jhubbard@nvidia.com>
For pages that were retained via get_user_pages*(), release those pages
via the new put_user_page*() routines, instead of via put_page() or
release_pages().
This is part a tree-wide conversion, as described in commit fc1d8e7cca2d
("mm: introduce put_user_page*(), placeholder versions").
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Daniel Black <daniel@linux.ibm.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
mm/ksm.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/mm/ksm.c b/mm/ksm.c
index 3dc4346411e4..e10ee4d5fdd8 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -456,7 +456,7 @@ static inline bool ksm_test_exit(struct mm_struct *mm)
* We use break_ksm to break COW on a ksm page: it's a stripped down
*
* if (get_user_pages(addr, 1, 1, 1, &page, NULL) == 1)
- * put_page(page);
+ * put_user_page(page);
*
* but taking great care only to touch a ksm page, in a VM_MERGEABLE vma,
* in case the application has unmapped and remapped mm,addr meanwhile.
@@ -483,7 +483,7 @@ static int break_ksm(struct vm_area_struct *vma, unsigned long addr)
FAULT_FLAG_WRITE | FAULT_FLAG_REMOTE);
else
ret = VM_FAULT_WRITE;
- put_page(page);
+ put_user_page(page);
} while (!(ret & (VM_FAULT_WRITE | VM_FAULT_SIGBUS | VM_FAULT_SIGSEGV | VM_FAULT_OOM)));
/*
* We must loop because handle_mm_fault() may back out if there's
@@ -568,7 +568,7 @@ static struct page *get_mergeable_page(struct rmap_item *rmap_item)
flush_anon_page(vma, page, addr);
flush_dcache_page(page);
} else {
- put_page(page);
+ put_user_page(page);
out:
page = NULL;
}
@@ -1974,10 +1974,10 @@ struct rmap_item *unstable_tree_search_insert(struct rmap_item *rmap_item,
parent = *new;
if (ret < 0) {
- put_page(tree_page);
+ put_user_page(tree_page);
new = &parent->rb_left;
} else if (ret > 0) {
- put_page(tree_page);
+ put_user_page(tree_page);
new = &parent->rb_right;
} else if (!ksm_merge_across_nodes &&
page_to_nid(tree_page) != nid) {
@@ -1986,7 +1986,7 @@ struct rmap_item *unstable_tree_search_insert(struct rmap_item *rmap_item,
* it will be flushed out and put in the right unstable
* tree next time: only merge with it when across_nodes.
*/
- put_page(tree_page);
+ put_user_page(tree_page);
return NULL;
} else {
*tree_pagep = tree_page;
@@ -2328,7 +2328,7 @@ static struct rmap_item *scan_get_next_rmap_item(struct page **page)
&rmap_item->rmap_list;
ksm_scan.address += PAGE_SIZE;
} else
- put_page(*page);
+ put_user_page(*page);
up_read(&mm->mmap_sem);
return rmap_item;
}
--
2.22.0
next prev parent reply other threads:[~2019-08-07 1:34 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-07 1:32 [PATCH v3 00/39] put_user_pages(): miscellaneous call sites john.hubbard
2019-08-07 1:33 ` [PATCH v3 01/41] mm/gup: add make_dirty arg to put_user_pages_dirty_lock() john.hubbard
2019-08-07 1:33 ` [PATCH v3 02/41] drivers/gpu/drm/via: convert put_page() to put_user_page*() john.hubbard
2019-08-07 1:33 ` [PATCH v3 03/41] net/xdp: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 04/41] net/rds: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 05/41] net/ceph: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 06/41] x86/kvm: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 07/41] drm/etnaviv: convert release_pages() to put_user_pages() john.hubbard
2019-08-07 1:33 ` [PATCH v3 08/41] drm/i915: convert put_page() to put_user_page*() john.hubbard
2019-08-07 1:33 ` [PATCH v3 09/41] drm/radeon: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 10/41] media/ivtv: " john.hubbard
2019-08-07 8:51 ` Hans Verkuil
2019-08-07 1:33 ` [PATCH v3 11/41] media/v4l2-core/mm: " john.hubbard
2019-08-07 7:20 ` Sakari Ailus
2019-08-07 8:07 ` Hans Verkuil
2019-08-07 1:33 ` [PATCH v3 12/41] genwqe: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 13/41] scif: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 14/41] vmci: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 15/41] rapidio: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 16/41] oradax: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 17/41] staging/vc04_services: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 18/41] drivers/tee: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 19/41] vfio: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 20/41] fbdev/pvr2fb: " john.hubbard
2019-08-09 11:38 ` Bartlomiej Zolnierkiewicz
2019-08-07 1:33 ` [PATCH v3 21/41] fsl_hypervisor: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 22/41] xen: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 23/41] fs/exec.c: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 24/41] orangefs: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 25/41] uprobes: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 26/41] futex: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 27/41] mm/frame_vector.c: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 28/41] mm/gup_benchmark.c: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 29/41] mm/memory.c: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 30/41] mm/madvise.c: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 31/41] mm/process_vm_access.c: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 32/41] crypt: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 33/41] fs/nfs: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 34/41] goldfish_pipe: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 35/41] kernel/events/core.c: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 36/41] fs/binfmt_elf: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 37/41] security/tomoyo: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 38/41] powerpc: " john.hubbard
2019-08-08 5:42 ` Michael Ellerman
2019-08-09 1:26 ` John Hubbard
2019-08-09 12:20 ` Michael Ellerman
2019-08-07 1:33 ` [PATCH v3 39/41] mm/mlock.c: " john.hubbard
2019-08-07 1:33 ` [PATCH v3 40/41] mm/mempolicy.c: " john.hubbard
2019-08-07 1:33 ` john.hubbard [this message]
2019-08-07 1:49 ` [PATCH v3 00/39] put_user_pages(): miscellaneous call sites John Hubbard
2019-08-30 1:29 ` Mike Marshall
2019-08-30 2:21 ` John Hubbard
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