[PATCH 4/4] kdump, oldmem: compare with saved_max_pfn exclusively

From: HATAYAMA Daisuke
Date: Mon Feb 04 2013 - 01:25:41 EST


Signed-off-by: HATAYAMA Daisuke <d.hatayama@xxxxxxxxxxxxxx>
---

drivers/char/mem.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index c6fa3bc..5da737c 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -369,7 +369,7 @@ static ssize_t read_oldmem(struct file *file, char __user *buf,

while (count) {
pfn = *ppos / PAGE_SIZE;
- if (pfn > saved_max_pfn)
+ if (!(pfn < saved_max_pfn))
return read;

offset = (unsigned long)(*ppos % PAGE_SIZE);

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