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vm_area_operations: kill ->migrate()

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the only instance this method has ever grown was one in kernfs -
one that call ->migrate() of another vm_ops if it exists.

Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2014-05-15 05:06:42 -04:00
commit 50062175ff
5 changed files with 0 additions and 60 deletions
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5
mm/mempolicy.c
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@ -1047,10 +1047,6 @@ int do_migrate_pages(struct mm_struct *mm, const nodemask_t *from,
down_read(&mm->mmap_sem);
err = migrate_vmas(mm, from, to, flags);
if (err)
goto out;
/*
* Find a 'source' bit set in 'tmp' whose corresponding 'dest'
* bit in 'to' is not also set in 'tmp'. Clear the found 'source'
@ -1130,7 +1126,6 @@ int do_migrate_pages(struct mm_struct *mm, const nodemask_t *from,
if (err < 0)
break;
}
out:
up_read(&mm->mmap_sem);
if (err < 0)
return err;