diff options
| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2009-04-07 04:00:30 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-07 17:31:03 +0200 |
| commit | 6260a4b0521a41189b2c2a8119096c1e21dbdf2c (patch) | |
| tree | 90e3c16cfde493503292b128fc3e275d58ccb037 /fs/proc/task_nommu.c | |
| parent | mm: add /proc controls for pdflush threads (diff) | |
| download | linux-6260a4b0521a41189b2c2a8119096c1e21dbdf2c.tar.xz linux-6260a4b0521a41189b2c2a8119096c1e21dbdf2c.zip | |
/proc/pid/maps: don't show pgoff of pure ANON VMAs
Recently, it's argued that what proc/pid/maps shows is ugly when a 32bit
binary runs on 64bit host.
/proc/pid/maps outputs vma's pgoff member but vma->pgoff is of no use
information is the vma is for ANON. With this patch, /proc/pid/maps shows
just 0 if no file backing store.
[akpm@linux-foundation.org: coding-style fixes]
[kamezawa.hiroyu@jp.fujitsu.com: coding-style fixes]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mike Waychison <mikew@google.com>
Reported-by: Ying Han <yinghan@google.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/task_nommu.c')
| -rw-r--r-- | fs/proc/task_nommu.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c index 863464d5519c..12c20377772d 100644 --- a/fs/proc/task_nommu.c +++ b/fs/proc/task_nommu.c @@ -126,6 +126,7 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) struct file *file; dev_t dev = 0; int flags, len; + unsigned long long pgoff = 0; flags = vma->vm_flags; file = vma->vm_file; @@ -134,6 +135,7 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) struct inode *inode = vma->vm_file->f_path.dentry->d_inode; dev = inode->i_sb->s_dev; ino = inode->i_ino; + pgoff = (loff_t)vma->pg_off << PAGE_SHIFT; } seq_printf(m, @@ -144,7 +146,7 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) flags & VM_WRITE ? 'w' : '-', flags & VM_EXEC ? 'x' : '-', flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p', - (unsigned long long) vma->vm_pgoff << PAGE_SHIFT, + pgoff, MAJOR(dev), MINOR(dev), ino, &len); if (file) { |