proc: introduce proc_create_seq_private

Variant of proc_create_data that directly take a struct seq_operations
argument + a private state size and drastically reduces the boilerplate
code in the callers.

All trivial callers converted over.

Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 3 insertions, 15 deletions

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index bc43c7838778..63a5f502da08 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2751,24 +2751,12 @@ static const struct seq_operations vmalloc_op = {
         .show = s_show,
 };
 
-static int vmalloc_open(struct inode *inode, struct file *file)
-{
-        return seq_open_private(file, &vmalloc_op,
-                                        nr_node_ids * sizeof(unsigned int));
-}
-
-static const struct file_operations proc_vmalloc_operations = {
-        .open           = vmalloc_open,
-        .read           = seq_read,
-        .llseek         = seq_lseek,
-        .release        = seq_release_private,
-};
-
 static int __init proc_vmalloc_init(void)
 {
         if (IS_ENABLED(CONFIG_NUMA))
-                proc_create("vmallocinfo", S_IRUSR, NULL,
-                                &proc_vmalloc_operations);
+                proc_create_seq_private("vmallocinfo", S_IRUSR, NULL,
+                                &vmalloc_op,
+                                nr_node_ids * sizeof(unsigned int), NULL);
         else
                 proc_create_seq("vmallocinfo", S_IRUSR, NULL, &vmalloc_op);
         return 0;