[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 7c40570b71dc02317a6963a1beed8d983700669a..555b9ac04c25be9ac5354bea2810ef79290ab92e 100644 (file)
--- 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 850a974ee505e614060bd48d2cd9ee1958405a55..b95f6eb7254cd889bfc5c9db9ab2d6029e0f2994 100644 (file)
--- 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;
 };