proc: introduce proc_create_seq{,_data}

Variants of proc_create{,_data} that directly take a struct seq_operations
argument 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, 4 insertions, 52 deletions

diff --git a/mm/vmstat.c b/mm/vmstat.c
index a2b9518980ce..75eda9c2b260 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1516,18 +1516,6 @@ static const struct seq_operations fragmentation_op = {
 	.show	= frag_show,
 };
 
-static int fragmentation_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &fragmentation_op);
-}
-
-static const struct file_operations buddyinfo_file_operations = {
-	.open		= fragmentation_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= seq_release,
-};
-
 static const struct seq_operations pagetypeinfo_op = {
 	.start	= frag_start,
 	.next	= frag_next,
@@ -1535,18 +1523,6 @@ static const struct seq_operations pagetypeinfo_op = {
 	.show	= pagetypeinfo_show,
 };
 
-static int pagetypeinfo_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &pagetypeinfo_op);
-}
-
-static const struct file_operations pagetypeinfo_file_operations = {
-	.open		= pagetypeinfo_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= seq_release,
-};
-
 static bool is_zone_first_populated(pg_data_t *pgdat, struct zone *zone)
 {
 	int zid;
@@ -1663,18 +1639,6 @@ static const struct seq_operations zoneinfo_op = {
 	.show	= zoneinfo_show,
 };
 
-static int zoneinfo_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &zoneinfo_op);
-}
-
-static const struct file_operations zoneinfo_file_operations = {
-	.open		= zoneinfo_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= seq_release,
-};
-
 enum writeback_stat_item {
 	NR_DIRTY_THRESHOLD,
 	NR_DIRTY_BG_THRESHOLD,
@@ -1762,18 +1726,6 @@ static const struct seq_operations vmstat_op = {
 	.stop	= vmstat_stop,
 	.show	= vmstat_show,
 };
-
-static int vmstat_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &vmstat_op);
-}
-
-static const struct file_operations vmstat_file_operations = {
-	.open		= vmstat_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= seq_release,
-};
 #endif /* CONFIG_PROC_FS */
 
 #ifdef CONFIG_SMP
@@ -2020,10 +1972,10 @@ void __init init_mm_internals(void)
 	start_shepherd_timer();
 #endif
 #ifdef CONFIG_PROC_FS
-	proc_create("buddyinfo", 0444, NULL, &buddyinfo_file_operations);
-	proc_create("pagetypeinfo", 0444, NULL, &pagetypeinfo_file_operations);
-	proc_create("vmstat", 0444, NULL, &vmstat_file_operations);
-	proc_create("zoneinfo", 0444, NULL, &zoneinfo_file_operations);
+	proc_create_seq("buddyinfo", 0444, NULL, &fragmentation_op);
+	proc_create_seq("pagetypeinfo", 0444, NULL, &pagetypeinfo_op);
+	proc_create_seq("vmstat", 0444, NULL, &vmstat_op);
+	proc_create_seq("zoneinfo", 0444, NULL, &zoneinfo_op);
 #endif
 }