Messages in this thread Patch in this message | | | From | Wanpeng Li <> | Subject | [PATCH 1/4] mm/pgtable: Fix continue to preallocate pmds even if failure occurrence | Date | Thu, 15 Aug 2013 08:31:40 +0800 |
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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 <liwanp@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
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