From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 23 Mar 2006 11:00:37 +0000 (-0800)
Subject: [PATCH] sem2mutex: fs/seq_file.c
X-Git-Tag: v2.6.17-rc1~1038
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0ac1759abc69fb62438c30a7e422f628a1120d67;p=platform%2Fkernel%2Flinux-3.10.git

[PATCH] sem2mutex: fs/seq_file.c

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/seq_file.c b/fs/seq_file.c
index 7c40570..555b9ac 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -37,7 +37,7 @@ int seq_open(struct file *file, struct seq_operations *op)
 		file->private_data = p;
 	}
 	memset(p, 0, sizeof(*p));
-	sema_init(&p->sem, 1);
+	mutex_init(&p->lock);
 	p->op = op;
 
 	/*
@@ -71,7 +71,7 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
 	void *p;
 	int err = 0;
 
-	down(&m->sem);
+	mutex_lock(&m->lock);
 	/*
 	 * seq_file->op->..m_start/m_stop/m_next may do special actions
 	 * or optimisations based on the file->f_version, so we want to
@@ -164,7 +164,7 @@ Done:
 	else
 		*ppos += copied;
 	file->f_version = m->version;
-	up(&m->sem);
+	mutex_unlock(&m->lock);
 	return copied;
 Enomem:
 	err = -ENOMEM;
@@ -237,7 +237,7 @@ loff_t seq_lseek(struct file *file, loff_t offset, int origin)
 	struct seq_file *m = (struct seq_file *)file->private_data;
 	long long retval = -EINVAL;
 
-	down(&m->sem);
+	mutex_lock(&m->lock);
 	m->version = file->f_version;
 	switch (origin) {
 		case 1:
@@ -260,7 +260,7 @@ loff_t seq_lseek(struct file *file, loff_t offset, int origin)
 				}
 			}
 	}
-	up(&m->sem);
+	mutex_unlock(&m->lock);
 	file->f_version = m->version;
 	return retval;
 }
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index 850a974..b95f6eb 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -4,7 +4,7 @@
 
 #include <linux/types.h>
 #include <linux/string.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 
 struct seq_operations;
 struct file;
@@ -19,7 +19,7 @@ struct seq_file {
 	size_t count;
 	loff_t index;
 	loff_t version;
-	struct semaphore sem;
+	struct mutex lock;
 	struct seq_operations *op;
 	void *private;
 };