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mm, migrate: remove reason argument from new_page_t

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No allocation callback is using this argument anymore.  new_page_node
used to use this parameter to convey node_id resp.  migration error up
to move_pages code (do_move_page_to_node_array).  The error status never
made it into the final status field and we have a better way to
communicate node id to the status field now.  All other allocation
callbacks simply ignored the argument so we can drop it finally.

[mhocko@suse.com: fix migration callback]
  Link: http://lkml.kernel.org/r/20180105085259.GH2801@dhcp22.suse.cz
[akpm@linux-foundation.org: fix alloc_misplaced_dst_page()]
[mhocko@kernel.org: fix build]
  Link: http://lkml.kernel.org/r/20180103091134.GB11319@dhcp22.suse.cz
Link: http://lkml.kernel.org/r/20180103082555.14592-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Zi Yan <zi.yan@cs.rutgers.edu>
Cc: Andrea Reale <ar@linux.vnet.ibm.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michal Hocko
2018-04-10 16:30:03 -07:00
committed by Linus Torvalds
parent a49bd4d716
commit 666feb21a0
10 changed files with 14 additions and 35 deletions
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21
mm/migrate.c
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@@ -1137,10 +1137,9 @@ static ICE_noinline int unmap_and_move(new_page_t get_new_page,
enum migrate_reason reason)
{
int rc = MIGRATEPAGE_SUCCESS;
int *result = NULL;
struct page *newpage;
newpage = get_new_page(page, private, &result);
newpage = get_new_page(page, private);
if (!newpage)
return -ENOMEM;
@@ -1231,12 +1230,6 @@ put_new:
put_page(newpage);
}
if (result) {
if (rc)
*result = rc;
else
*result = page_to_nid(newpage);
}
return rc;
}
@@ -1264,7 +1257,6 @@ static int unmap_and_move_huge_page(new_page_t get_new_page,
enum migrate_mode mode, int reason)
{
int rc = -EAGAIN;
int *result = NULL;
int page_was_mapped = 0;
struct page *new_hpage;
struct anon_vma *anon_vma = NULL;
@@ -1281,7 +1273,7 @@ static int unmap_and_move_huge_page(new_page_t get_new_page,
return -ENOSYS;
}
new_hpage = get_new_page(hpage, private, &result);
new_hpage = get_new_page(hpage, private);
if (!new_hpage)
return -ENOMEM;
@@ -1345,12 +1337,6 @@ out:
else
putback_active_hugepage(new_hpage);
if (result) {
if (rc)
*result = rc;
else
*result = page_to_nid(new_hpage);
}
return rc;
}
@@ -1828,8 +1814,7 @@ static bool migrate_balanced_pgdat(struct pglist_data *pgdat,
}
static struct page *alloc_misplaced_dst_page(struct page *page,
unsigned long data,
int **result)
unsigned long data)
{
int nid = (int) data;
struct page *newpage;