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authorAlexey Dobriyan <adobriyan@gmail.com>2011-01-12 17:00:32 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 08:03:16 -0800
commita2ade7b6ca37c808128810687cd56e8a44443e65 (patch)
treed7ffb1be14e69f4ba22ca425c21369d4dd3a3032 /fs/proc
parent34e49d4f635d6a800c4089c40fd254e12e451449 (diff)
downloadop-kernel-dev-a2ade7b6ca37c808128810687cd56e8a44443e65.zip
op-kernel-dev-a2ade7b6ca37c808128810687cd56e8a44443e65.tar.gz
proc: use unsigned long inside /proc/*/statm
/proc/*/statm code needlessly truncates data from unsigned long to int. One needs only 8+ TB of RAM to make truncation visible. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/array.c6
-rw-r--r--fs/proc/internal.h3
-rw-r--r--fs/proc/task_mmu.c5
-rw-r--r--fs/proc/task_nommu.c7
4 files changed, 12 insertions, 9 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c
index fff6572..842a656 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -535,15 +535,15 @@ int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
struct pid *pid, struct task_struct *task)
{
- int size = 0, resident = 0, shared = 0, text = 0, lib = 0, data = 0;
+ unsigned long size = 0, resident = 0, shared = 0, text = 0, data = 0;
struct mm_struct *mm = get_task_mm(task);
if (mm) {
size = task_statm(mm, &shared, &text, &data, &resident);
mmput(mm);
}
- seq_printf(m, "%d %d %d %d %d %d %d\n",
- size, resident, shared, text, lib, data, 0);
+ seq_printf(m, "%lu %lu %lu %lu 0 %lu 0\n",
+ size, resident, shared, text, data);
return 0;
}
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 1f24a3e..659ea6a 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -96,7 +96,8 @@ extern spinlock_t proc_subdir_lock;
struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *);
int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
unsigned long task_vsize(struct mm_struct *);
-int task_statm(struct mm_struct *, int *, int *, int *, int *);
+unsigned long task_statm(struct mm_struct *,
+ unsigned long *, unsigned long *, unsigned long *, unsigned long *);
void task_mem(struct seq_file *, struct mm_struct *);
static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index c126c83..c3755bd 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -66,8 +66,9 @@ unsigned long task_vsize(struct mm_struct *mm)
return PAGE_SIZE * mm->total_vm;
}
-int task_statm(struct mm_struct *mm, int *shared, int *text,
- int *data, int *resident)
+unsigned long task_statm(struct mm_struct *mm,
+ unsigned long *shared, unsigned long *text,
+ unsigned long *data, unsigned long *resident)
{
*shared = get_mm_counter(mm, MM_FILEPAGES);
*text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index cb6306e..b535d3e 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -92,13 +92,14 @@ unsigned long task_vsize(struct mm_struct *mm)
return vsize;
}
-int task_statm(struct mm_struct *mm, int *shared, int *text,
- int *data, int *resident)
+unsigned long task_statm(struct mm_struct *mm,
+ unsigned long *shared, unsigned long *text,
+ unsigned long *data, unsigned long *resident)
{
struct vm_area_struct *vma;
struct vm_region *region;
struct rb_node *p;
- int size = kobjsize(mm);
+ unsigned long size = kobjsize(mm);
down_read(&mm->mmap_sem);
for (p = rb_first(&mm->mm_rb); p; p = rb_next(p)) {
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