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mm/migrate: clean up some minor coding style 

Fix some comment typos and coding style clean up in preparation for the
next patch.  No functional changes.

Link: http://lkml.kernel.org/r/20200107211208.24595-3-rcampbell@nvidia.com
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Acked-by: Chris Down <chris@chrisdown.name>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Bharata B Rao <bharata@linux.ibm.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ralph Campbell 2020-01-30 22:14:41 -08:00 committed by Linus Torvalds
parent 872ea70751
commit c23a0c9979
1 changed files with 13 additions and 21 deletions
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34
mm/migrate.c
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@ -986,7 +986,7 @@ static int move_to_new_page(struct page *newpage, struct page *page,
}
/*
* Anonymous and movable page->mapping will be cleard by
* Anonymous and movable page->mapping will be cleared by
* free_pages_prepare so don't reset it here for keeping
* the type to work PageAnon, for example.
*/
@ -1199,8 +1199,7 @@ out:
/*
* A page that has been migrated has all references
* removed and will be freed. A page that has not been
* migrated will have kepts its references and be
* restored.
* migrated will have kept its references and be restored.
*/
list_del(&page->lru);
@ -2779,27 +2778,18 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate,
if (pte_present(*ptep)) {
unsigned long pfn = pte_pfn(*ptep);
if (!is_zero_pfn(pfn)) {
pte_unmap_unlock(ptep, ptl);
mem_cgroup_cancel_charge(page, memcg, false);
goto abort;
}
if (!is_zero_pfn(pfn))
goto unlock_abort;
flush = true;
} else if (!pte_none(*ptep)) {
pte_unmap_unlock(ptep, ptl);
mem_cgroup_cancel_charge(page, memcg, false);
goto abort;
}
} else if (!pte_none(*ptep))
goto unlock_abort;
/*
* Check for usefaultfd but do not deliver the fault. Instead,
* Check for userfaultfd but do not deliver the fault. Instead,
* just back off.
*/
if (userfaultfd_missing(vma)) {
pte_unmap_unlock(ptep, ptl);
mem_cgroup_cancel_charge(page, memcg, false);
goto abort;
}
if (userfaultfd_missing(vma))
goto unlock_abort;
inc_mm_counter(mm, MM_ANONPAGES);
page_add_new_anon_rmap(page, vma, addr, false);
@ -2823,6 +2813,9 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate,
*src = MIGRATE_PFN_MIGRATE;
return;
unlock_abort:
pte_unmap_unlock(ptep, ptl);
mem_cgroup_cancel_charge(page, memcg, false);
abort:
*src &= ~MIGRATE_PFN_MIGRATE;
}
@ -2855,9 +2848,8 @@ void migrate_vma_pages(struct migrate_vma *migrate)
}
if (!page) {
if (!(migrate->src[i] & MIGRATE_PFN_MIGRATE)) {
if (!(migrate->src[i] & MIGRATE_PFN_MIGRATE))
continue;
}
if (!notified) {
notified = true;