Use remove_proc_subtree to remove the whole subtree on cleanup, and
unwind the registration loop into individual calls.  Switch to use
proc_create_seq where applicable.

Signed-off-by: Christoph Hellwig <h...@lst.de>
---
 fs/jfs/jfs_debug.c    | 43 ++++++++++++++-----------------------------
 fs/jfs/jfs_debug.h    | 10 +++++-----
 fs/jfs/jfs_logmgr.c   | 14 +-------------
 fs/jfs/jfs_metapage.c | 14 +-------------
 fs/jfs/jfs_txnmgr.c   | 28 ++--------------------------
 fs/jfs/jfs_xtree.c    | 14 +-------------
 6 files changed, 24 insertions(+), 99 deletions(-)

diff --git a/fs/jfs/jfs_debug.c b/fs/jfs/jfs_debug.c
index a70907606025..35a5b2a81ae0 100644
--- a/fs/jfs/jfs_debug.c
+++ b/fs/jfs/jfs_debug.c
@@ -29,7 +29,6 @@
 
 #ifdef PROC_FS_JFS /* see jfs_debug.h */
 
-static struct proc_dir_entry *base;
 #ifdef CONFIG_JFS_DEBUG
 static int jfs_loglevel_proc_show(struct seq_file *m, void *v)
 {
@@ -66,43 +65,29 @@ static const struct file_operations jfs_loglevel_proc_fops 
= {
 };
 #endif
 
-static struct {
-       const char      *name;
-       const struct file_operations *proc_fops;
-} Entries[] = {
-#ifdef CONFIG_JFS_STATISTICS
-       { "lmstats",    &jfs_lmstats_proc_fops, },
-       { "txstats",    &jfs_txstats_proc_fops, },
-       { "xtstat",     &jfs_xtstat_proc_fops, },
-       { "mpstat",     &jfs_mpstat_proc_fops, },
-#endif
-#ifdef CONFIG_JFS_DEBUG
-       { "TxAnchor",   &jfs_txanchor_proc_fops, },
-       { "loglevel",   &jfs_loglevel_proc_fops }
-#endif
-};
-#define NPROCENT       ARRAY_SIZE(Entries)
-
 void jfs_proc_init(void)
 {
-       int i;
+       struct proc_dir_entry *base;
 
-       if (!(base = proc_mkdir("fs/jfs", NULL)))
+       base = proc_mkdir("fs/jfs", NULL);
+       if (!base)
                return;
 
-       for (i = 0; i < NPROCENT; i++)
-               proc_create(Entries[i].name, 0, base, Entries[i].proc_fops);
+#ifdef CONFIG_JFS_STATISTICS
+       proc_create_single("lmstats", 0, base, jfs_lmstats_proc_show);
+       proc_create_single("txstats", 0, base, jfs_txstats_proc_show);
+       proc_create_single("xtstat", 0, base, jfs_xtstat_proc_show);
+       proc_create_single("mpstat", 0, base, jfs_mpstat_proc_show);
+#endif
+#ifdef CONFIG_JFS_DEBUG
+       proc_create_single("TxAnchor", 0, base, jfs_txanchor_proc_show);
+       proc_create("loglevel", 0, base, &jfs_loglevel_proc_fops);
+#endif
 }
 
 void jfs_proc_clean(void)
 {
-       int i;
-
-       if (base) {
-               for (i = 0; i < NPROCENT; i++)
-                       remove_proc_entry(Entries[i].name, base);
-               remove_proc_entry("fs/jfs", NULL);
-       }
+       remove_proc_subtree("fs/jfs", NULL);
 }
 
 #endif /* PROC_FS_JFS */
diff --git a/fs/jfs/jfs_debug.h b/fs/jfs/jfs_debug.h
index eafd1300a00b..0d9e35da8462 100644
--- a/fs/jfs/jfs_debug.h
+++ b/fs/jfs/jfs_debug.h
@@ -62,7 +62,7 @@ extern void jfs_proc_clean(void);
 
 extern int jfsloglevel;
 
-extern const struct file_operations jfs_txanchor_proc_fops;
+int jfs_txanchor_proc_show(struct seq_file *m, void *v);
 
 /* information message: e.g., configuration, major event */
 #define jfs_info(fmt, arg...) do {                     \
@@ -105,10 +105,10 @@ extern const struct file_operations 
jfs_txanchor_proc_fops;
  *     ----------
  */
 #ifdef CONFIG_JFS_STATISTICS
-extern const struct file_operations jfs_lmstats_proc_fops;
-extern const struct file_operations jfs_txstats_proc_fops;
-extern const struct file_operations jfs_mpstat_proc_fops;
-extern const struct file_operations jfs_xtstat_proc_fops;
+int jfs_lmstats_proc_show(struct seq_file *m, void *v);
+int jfs_txstats_proc_show(struct seq_file *m, void *v);
+int jfs_mpstat_proc_show(struct seq_file *m, void *v);
+int jfs_xtstat_proc_show(struct seq_file *m, void *v);
 
 #define        INCREMENT(x)            ((x)++)
 #define        DECREMENT(x)            ((x)--)
diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c
index 0e5d412c0b01..6b68df395892 100644
--- a/fs/jfs/jfs_logmgr.c
+++ b/fs/jfs/jfs_logmgr.c
@@ -2493,7 +2493,7 @@ int lmLogFormat(struct jfs_log *log, s64 logAddress, int 
logSize)
 }
 
 #ifdef CONFIG_JFS_STATISTICS
-static int jfs_lmstats_proc_show(struct seq_file *m, void *v)
+int jfs_lmstats_proc_show(struct seq_file *m, void *v)
 {
        seq_printf(m,
                       "JFS Logmgr stats\n"
@@ -2510,16 +2510,4 @@ static int jfs_lmstats_proc_show(struct seq_file *m, 
void *v)
                       lmStat.partial_page);
        return 0;
 }
-
-static int jfs_lmstats_proc_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, jfs_lmstats_proc_show, NULL);
-}
-
-const struct file_operations jfs_lmstats_proc_fops = {
-       .open           = jfs_lmstats_proc_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
 #endif /* CONFIG_JFS_STATISTICS */
diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c
index 1a3b0cc22ad3..fa2c6824c7f2 100644
--- a/fs/jfs/jfs_metapage.c
+++ b/fs/jfs/jfs_metapage.c
@@ -815,7 +815,7 @@ void __invalidate_metapages(struct inode *ip, s64 addr, int 
len)
 }
 
 #ifdef CONFIG_JFS_STATISTICS
-static int jfs_mpstat_proc_show(struct seq_file *m, void *v)
+int jfs_mpstat_proc_show(struct seq_file *m, void *v)
 {
        seq_printf(m,
                       "JFS Metapage statistics\n"
@@ -828,16 +828,4 @@ static int jfs_mpstat_proc_show(struct seq_file *m, void 
*v)
                       mpStat.lockwait);
        return 0;
 }
-
-static int jfs_mpstat_proc_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, jfs_mpstat_proc_show, NULL);
-}
-
-const struct file_operations jfs_mpstat_proc_fops = {
-       .open           = jfs_mpstat_proc_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
 #endif
diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
index 4d973524c887..a5663cb621d8 100644
--- a/fs/jfs/jfs_txnmgr.c
+++ b/fs/jfs/jfs_txnmgr.c
@@ -2998,7 +2998,7 @@ int jfs_sync(void *arg)
 }
 
 #if defined(CONFIG_PROC_FS) && defined(CONFIG_JFS_DEBUG)
-static int jfs_txanchor_proc_show(struct seq_file *m, void *v)
+int jfs_txanchor_proc_show(struct seq_file *m, void *v)
 {
        char *freewait;
        char *freelockwait;
@@ -3032,22 +3032,10 @@ static int jfs_txanchor_proc_show(struct seq_file *m, 
void *v)
                       list_empty(&TxAnchor.unlock_queue) ? "" : "not ");
        return 0;
 }
-
-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 = {
-       .open           = jfs_txanchor_proc_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
 #endif
 
 #if defined(CONFIG_PROC_FS) && defined(CONFIG_JFS_STATISTICS)
-static int jfs_txstats_proc_show(struct seq_file *m, void *v)
+int jfs_txstats_proc_show(struct seq_file *m, void *v)
 {
        seq_printf(m,
                       "JFS TxStats\n"
@@ -3072,16 +3060,4 @@ static int jfs_txstats_proc_show(struct seq_file *m, 
void *v)
                       TxStat.txLockAlloc_freelock);
        return 0;
 }
-
-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 = {
-       .open           = jfs_txstats_proc_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
 #endif
diff --git a/fs/jfs/jfs_xtree.c b/fs/jfs/jfs_xtree.c
index 5cde6d2fcfca..2c200b5256a6 100644
--- a/fs/jfs/jfs_xtree.c
+++ b/fs/jfs/jfs_xtree.c
@@ -3874,7 +3874,7 @@ s64 xtTruncate_pmap(tid_t tid, struct inode *ip, s64 
committed_size)
 }
 
 #ifdef CONFIG_JFS_STATISTICS
-static int jfs_xtstat_proc_show(struct seq_file *m, void *v)
+int jfs_xtstat_proc_show(struct seq_file *m, void *v)
 {
        seq_printf(m,
                       "JFS Xtree statistics\n"
@@ -3887,16 +3887,4 @@ static int jfs_xtstat_proc_show(struct seq_file *m, void 
*v)
                       xtStat.split);
        return 0;
 }
-
-static int jfs_xtstat_proc_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, jfs_xtstat_proc_show, NULL);
-}
-
-const struct file_operations jfs_xtstat_proc_fops = {
-       .open           = jfs_xtstat_proc_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
 #endif
-- 
2.17.0

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