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Merge branch 'akpm' (fixes from Andrew Morton)
Merge three fixes from Andrew Morton. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: memcg: use __this_cpu_sub() to dec stats to avoid incorrect subtrahend casting percpu: fix this_cpu_sub() subtrahend casting for unsigneds mm/pagewalk.c: fix walk_page_range() access of wrong PTEs
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commit
12aee278b5
4 changed files with 8 additions and 7 deletions
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@ -128,7 +128,8 @@ do { \
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do { \
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typedef typeof(var) pao_T__; \
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const int pao_ID__ = (__builtin_constant_p(val) && \
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((val) == 1 || (val) == -1)) ? (val) : 0; \
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((val) == 1 || (val) == -1)) ? \
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(int)(val) : 0; \
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if (0) { \
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pao_T__ pao_tmp__; \
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pao_tmp__ = (val); \
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@ -332,7 +332,7 @@ do { \
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#endif
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#ifndef this_cpu_sub
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# define this_cpu_sub(pcp, val) this_cpu_add((pcp), -(val))
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# define this_cpu_sub(pcp, val) this_cpu_add((pcp), -(typeof(pcp))(val))
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#endif
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#ifndef this_cpu_inc
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@ -418,7 +418,7 @@ do { \
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# define this_cpu_add_return(pcp, val) __pcpu_size_call_return2(this_cpu_add_return_, pcp, val)
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#endif
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#define this_cpu_sub_return(pcp, val) this_cpu_add_return(pcp, -(val))
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#define this_cpu_sub_return(pcp, val) this_cpu_add_return(pcp, -(typeof(pcp))(val))
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#define this_cpu_inc_return(pcp) this_cpu_add_return(pcp, 1)
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#define this_cpu_dec_return(pcp) this_cpu_add_return(pcp, -1)
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@ -586,7 +586,7 @@ do { \
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#endif
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#ifndef __this_cpu_sub
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# define __this_cpu_sub(pcp, val) __this_cpu_add((pcp), -(val))
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# define __this_cpu_sub(pcp, val) __this_cpu_add((pcp), -(typeof(pcp))(val))
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#endif
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#ifndef __this_cpu_inc
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@ -668,7 +668,7 @@ do { \
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__pcpu_size_call_return2(__this_cpu_add_return_, pcp, val)
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#endif
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#define __this_cpu_sub_return(pcp, val) __this_cpu_add_return(pcp, -(val))
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#define __this_cpu_sub_return(pcp, val) __this_cpu_add_return(pcp, -(typeof(pcp))(val))
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#define __this_cpu_inc_return(pcp) __this_cpu_add_return(pcp, 1)
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#define __this_cpu_dec_return(pcp) __this_cpu_add_return(pcp, -1)
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@ -3774,7 +3774,7 @@ void mem_cgroup_move_account_page_stat(struct mem_cgroup *from,
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/* Update stat data for mem_cgroup */
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preempt_disable();
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WARN_ON_ONCE(from->stat->count[idx] < nr_pages);
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__this_cpu_add(from->stat->count[idx], -nr_pages);
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__this_cpu_sub(from->stat->count[idx], nr_pages);
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__this_cpu_add(to->stat->count[idx], nr_pages);
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preempt_enable();
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}
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@ -242,7 +242,7 @@ int walk_page_range(unsigned long addr, unsigned long end,
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if (err)
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break;
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pgd++;
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} while (addr = next, addr != end);
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} while (addr = next, addr < end);
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return err;
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}
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