d_path: Make seq_path() use a struct path argument

seq_path() is always called with a dentry and a vfsmount from a struct path.
Make seq_path() take it directly as an argument.

Signed-off-by: Jan Blunck <jblunck@suse.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 files changed, 16 insertions, 17 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 5fc326d3970e..7da6ec244e15 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5197,8 +5197,7 @@ static int md_seq_show(struct seq_file *seq, void *v)
                                 chunk_kb ? "KB" : "B");
                         if (bitmap->file) {
                                 seq_printf(seq, ", file: ");
-                                seq_path(seq, bitmap->file->f_path.mnt,
-                                         bitmap->file->f_path.dentry," \t\n");
+                                seq_path(seq, &bitmap->file->f_path, " \t\n");
                         }
 
                         seq_printf(seq, "\n");
diff --git a/fs/namespace.c b/fs/namespace.c
index eef57635ee07..7953c96a2071 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -408,10 +408,11 @@ static int show_vfsmnt(struct seq_file *m, void *v)
                 { 0, NULL }
         };
         struct proc_fs_info *fs_infop;
+        struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
 
         mangle(m, mnt->mnt_devname ? mnt->mnt_devname : "none");
         seq_putc(m, ' ');
-        seq_path(m, mnt, mnt->mnt_root, " \t\n\\");
+        seq_path(m, &mnt_path, " \t\n\\");
         seq_putc(m, ' ');
         mangle(m, mnt->mnt_sb->s_type->name);
         if (mnt->mnt_sb->s_subtype && mnt->mnt_sb->s_subtype[0]) {
@@ -443,6 +444,7 @@ struct seq_operations mounts_op = {
 static int show_vfsstat(struct seq_file *m, void *v)
 {
         struct vfsmount *mnt = list_entry(v, struct vfsmount, mnt_list);
+        struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
         int err = 0;
 
         /* device */
@@ -454,7 +456,7 @@ static int show_vfsstat(struct seq_file *m, void *v)
 
         /* mount point */
         seq_puts(m, " mounted on ");
-        seq_path(m, mnt, mnt->mnt_root, " \t\n\\");
+        seq_path(m, &mnt_path, " \t\n\\");
         seq_putc(m, ' ');
 
         /* file system type */
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index b59f8590af47..4a85b40eef4f 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -203,7 +203,7 @@ static int expkey_show(struct seq_file *m,
         if (test_bit(CACHE_VALID, &h->flags) && 
             !test_bit(CACHE_NEGATIVE, &h->flags)) {
                 seq_printf(m, " ");
-                seq_path(m, ek->ek_path.mnt, ek->ek_path.dentry, "\\ \t\n");
+                seq_path(m, &ek->ek_path, "\\ \t\n");
         }
         seq_printf(m, "\n");
         return 0;
@@ -649,7 +649,7 @@ static int svc_export_show(struct seq_file *m,
                 return 0;
         }
         exp = container_of(h, struct svc_export, h);
-        seq_path(m, exp->ex_path.mnt, exp->ex_path.dentry, " \t\n\\");
+        seq_path(m, &exp->ex_path, " \t\n\\");
         seq_putc(m, '\t');
         seq_escape(m, exp->ex_client->name, " \t\n\\");
         seq_putc(m, '(');
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index 5d9147b9d738..941e95114b5a 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -67,7 +67,7 @@ int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma)
                 if (len < 1)
                         len = 1;
                 seq_printf(m, "%*c", len, ' ');
-                seq_path(m, file->f_path.mnt, file->f_path.dentry, "");
+                seq_path(m, &file->f_path, "");
         }
 
         seq_putc(m, '\n');
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 4c4f99fb1bfc..49958cffbd8d 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -271,7 +271,7 @@ static int show_map(struct seq_file *m, void *v)
          */
         if (file) {
                 pad_len_spaces(m, len);
-                seq_path(m, file->f_path.mnt, file->f_path.dentry, "\n");
+                seq_path(m, &file->f_path, "\n");
         } else {
                 const char *name = arch_vma_name(vma);
                 if (!name) {
diff --git a/fs/seq_file.c b/fs/seq_file.c
index ca71c115bdaa..8d862907f060 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -342,13 +342,12 @@ int seq_printf(struct seq_file *m, const char *f, ...)
 }
 EXPORT_SYMBOL(seq_printf);
 
-int seq_path(struct seq_file *m,
-             struct vfsmount *mnt, struct dentry *dentry,
-             char *esc)
+int seq_path(struct seq_file *m, struct path *path, char *esc)
 {
         if (m->count < m->size) {
                 char *s = m->buf + m->count;
-                char *p = d_path(dentry, mnt, s, m->size - m->count);
+                char *p = d_path(path->dentry, path->mnt, s,
+                                 m->size - m->count);
                 if (!IS_ERR(p)) {
                         while (s <= p) {
                                 char c = *p++;
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index 648dfeb444db..67c2563961f3 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -8,8 +8,7 @@
 
 struct seq_operations;
 struct file;
-struct vfsmount;
-struct dentry;
+struct path;
 struct inode;
 
 struct seq_file {
@@ -42,7 +41,7 @@ int seq_puts(struct seq_file *m, const char *s);
 int seq_printf(struct seq_file *, const char *, ...)
         __attribute__ ((format (printf,2,3)));
 
-int seq_path(struct seq_file *, struct vfsmount *, struct dentry *, char *);
+int seq_path(struct seq_file *, struct path *, char *);
 
 int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
 int single_release(struct inode *, struct file *);
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 8d246c3b340f..6c7ba1a63d23 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1996,7 +1996,7 @@ int show_numa_map(struct seq_file *m, void *v)
 
         if (file) {
                 seq_printf(m, " file=");
-                seq_path(m, file->f_path.mnt, file->f_path.dentry, "\n\t= ");
+                seq_path(m, &file->f_path, "\n\t= ");
         } else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) {
                 seq_printf(m, " heap");
         } else if (vma->vm_start <= mm->start_stack &&
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 02ccab5ad9d9..2da149cfc9ac 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1394,7 +1394,7 @@ static int swap_show(struct seq_file *swap, void *v)
         }
 
         file = ptr->swap_file;
-        len = seq_path(swap, file->f_path.mnt, file->f_path.dentry, " \t\n\\");
+        len = seq_path(swap, &file->f_path, " \t\n\\");
         seq_printf(swap, "%*s%s\t%u\t%u\t%d\n",
                        len < 40 ? 40 - len : 1, " ",
                        S_ISBLK(file->f_path.dentry->d_inode->i_mode) ?