preallocate_pmds will continue to preallocate pmds even if failure
occurrence, and then free all the preallocate pmds if there is
failure, this patch fix it by stop preallocate if failure occurrence
and go to free path.
Signed-off-by: Wanpeng Li <liw...@linux.vnet.ibm.com>
---
arch/x86/mm/pgtable.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index dfa537a..ad3397a 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -200,8 +200,10 @@ static int preallocate_pmds(pmd_t *pmds[])
for(i = 0; i < PREALLOCATED_PMDS; i++) {
pmd_t *pmd = (pmd_t *)__get_free_page(PGALLOC_GFP);
- if (pmd == NULL)
+ if (pmd == NULL) {
failed = true;
+ break;
+ }
pmds[i] = pmd;
}
--
1.8.1.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
