From a2ade7b6ca37c808128810687cd56e8a44443e65 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Wed, 12 Jan 2011 17:00:32 -0800 Subject: [PATCH] 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 Reviewed-by: WANG Cong Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/proc/array.c | 6 +++--- fs/proc/internal.h | 3 ++- fs/proc/task_mmu.c | 5 +++-- fs/proc/task_nommu.c | 7 ++++--- 4 files changed, 12 insertions(+), 9 deletions(-) diff --git a/fs/proc/array.c b/fs/proc/array.c index fff6572676ae..842a6564f2ce 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 1f24a3eddd12..659ea6af379a 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 c126c83b9a45..c3755bd8dd3e 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 cb6306e63843..b535d3e5d5f1 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)) { -- 2.34.1