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| author | Alan Cox <alan@redhat.com> | 2008-05-23 13:04:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-24 09:56:09 -0700 |
| commit | 80119ef5c8153e0a6cc5edf00c083dc98a9bd348 (patch) | |
| tree | a2af11a3991b1bebe9d764ab6d4d28891e86eda2 /fs/proc/proc_misc.c | |
| parent | 6c7c6afbb8c0e60d32a563cae7c6889211e9d9d8 (diff) | |
| download | op-kernel-dev-80119ef5c8153e0a6cc5edf00c083dc98a9bd348.zip op-kernel-dev-80119ef5c8153e0a6cc5edf00c083dc98a9bd348.tar.gz | |
mm: fix atomic_t overflow in vm
The atomic_t type is 32bit but a 64bit system can have more than 2^32
pages of virtual address space available. Without this we overflow on
ludicrously large mappings
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/proc_misc.c')
| -rw-r--r-- | fs/proc/proc_misc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c index 74a323d..32dc14c 100644 --- a/fs/proc/proc_misc.c +++ b/fs/proc/proc_misc.c @@ -139,7 +139,7 @@ static int meminfo_read_proc(char *page, char **start, off_t off, #define K(x) ((x) << (PAGE_SHIFT - 10)) si_meminfo(&i); si_swapinfo(&i); - committed = atomic_read(&vm_committed_space); + committed = atomic_long_read(&vm_committed_space); allowed = ((totalram_pages - hugetlb_total_pages()) * sysctl_overcommit_ratio / 100) + total_swap_pages; |
