JFS: switch to seq_files

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>

1 files changed, 31 insertions, 37 deletions

diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
index e7c60ae6b5b2..f26e4d03ada5 100644
--- a/fs/jfs/jfs_txnmgr.c
+++ b/fs/jfs/jfs_txnmgr.c
@@ -49,6 +49,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/kthread.h>
+#include <linux/seq_file.h>
 #include "jfs_incore.h"
 #include "jfs_inode.h"
 #include "jfs_filsys.h"
@@ -3009,11 +3010,8 @@ int jfs_sync(void *arg)
 }
 
 #if defined(CONFIG_PROC_FS) && defined(CONFIG_JFS_DEBUG)
-int jfs_txanchor_read(char *buffer, char **start, off_t offset, int length,
-                      int *eof, void *data)
+static int jfs_txanchor_proc_show(struct seq_file *m, void *v)
 {
-        int len = 0;
-        off_t begin;
         char *freewait;
         char *freelockwait;
         char *lowlockwait;
@@ -3025,7 +3023,7 @@ int jfs_txanchor_read(char *buffer, char **start, off_t offset, int length,
         lowlockwait =
             waitqueue_active(&TxAnchor.lowlockwait) ? "active" : "empty";
 
-        len += sprintf(buffer,
+        seq_printf(m,
                        "JFS TxAnchor\n"
                        "============\n"
                        "freetid = %d\n"
@@ -3044,31 +3042,27 @@ int jfs_txanchor_read(char *buffer, char **start, off_t offset, int length,
                        TxAnchor.tlocksInUse,
                        jfs_tlocks_low,
                        list_empty(&TxAnchor.unlock_queue) ? "" : "not ");
+        return 0;
+}
 
-        begin = offset;
-        *start = buffer + begin;
-        len -= begin;
-
-        if (len > length)
-                len = length;
-        else
-                *eof = 1;
-
-        if (len < 0)
-                len = 0;
-
-        return len;
+static int jfs_txanchor_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, jfs_txanchor_proc_show, NULL);
 }
+
+const struct file_operations jfs_txanchor_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = jfs_txanchor_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
 #endif
 
 #if defined(CONFIG_PROC_FS) && defined(CONFIG_JFS_STATISTICS)
-int jfs_txstats_read(char *buffer, char **start, off_t offset, int length,
-                     int *eof, void *data)
+static int jfs_txstats_proc_show(struct seq_file *m, void *v)
 {
-        int len = 0;
-        off_t begin;
-
-        len += sprintf(buffer,
+        seq_printf(m,
                        "JFS TxStats\n"
                        "===========\n"
                        "calls to txBegin = %d\n"
@@ -3089,19 +3083,19 @@ int jfs_txstats_read(char *buffer, char **start, off_t offset, int length,
                        TxStat.txBeginAnon_lockslow,
                        TxStat.txLockAlloc,
                        TxStat.txLockAlloc_freelock);
+        return 0;
+}
 
-        begin = offset;
-        *start = buffer + begin;
-        len -= begin;
-
-        if (len > length)
-                len = length;
-        else
-                *eof = 1;
-
-        if (len < 0)
-                len = 0;
-
-        return len;
+static int jfs_txstats_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, jfs_txstats_proc_show, NULL);
 }
+
+const struct file_operations jfs_txstats_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = jfs_txstats_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
 #endif