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[PATCH] Drop page table lock before calling migrate_page_add() 

migrate_page_add cannot be called with a spinlock held (calls
isolate_lru_page which calles schedule_on_each_cpu).  Drop ptl lock in
check_pte_range before calling migrate_page_add().

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
hifive-unleashed-5.1
Christoph Lameter 2006-01-08 01:01:02 -08:00 committed by Linus Torvalds
parent 1a75a6c825
commit 132beacf97
1 changed files with 4 additions and 1 deletions
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5
mm/mempolicy.c
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@ -259,8 +259,11 @@ static int check_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
if (flags & MPOL_MF_STATS)
gather_stats(page, private);
else if (flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL))
else if (flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL)) {
spin_unlock(ptl);
migrate_page_add(vma, page, private, flags);
spin_lock(ptl);
}
else
break;
} while (pte++, addr += PAGE_SIZE, addr != end);