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authorIngo Molnar <mingo@elte.hu>2006-03-23 12:00:36 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-23 16:38:12 +0100
commit7cf34c761db8827818a27e23c50756f8b821a9b0 (patch)
treec8cb1a4973aae6203e50164a479a77d244378c8d /fs/libfs.c
parent[PATCH] sem2mutex: kprobes (diff)
downloadlinux-7cf34c761db8827818a27e23c50756f8b821a9b0.tar.xz
linux-7cf34c761db8827818a27e23c50756f8b821a9b0.zip
[PATCH] sem2mutex: fs/libfs.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>
Diffstat (limited to '')
-rw-r--r--fs/libfs.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/libfs.c b/fs/libfs.c
index 71fd08fa4103..4fdeaceb892c 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -7,6 +7,8 @@
#include <linux/pagemap.h>
#include <linux/mount.h>
#include <linux/vfs.h>
+#include <linux/mutex.h>
+
#include <asm/uaccess.h>
int simple_getattr(struct vfsmount *mnt, struct dentry *dentry,
@@ -530,7 +532,7 @@ struct simple_attr {
char set_buf[24];
void *data;
const char *fmt; /* format for read operation */
- struct semaphore sem; /* protects access to these buffers */
+ struct mutex mutex; /* protects access to these buffers */
};
/* simple_attr_open is called by an actual attribute open file operation
@@ -549,7 +551,7 @@ int simple_attr_open(struct inode *inode, struct file *file,
attr->set = set;
attr->data = inode->u.generic_ip;
attr->fmt = fmt;
- init_MUTEX(&attr->sem);
+ mutex_init(&attr->mutex);
file->private_data = attr;
@@ -575,7 +577,7 @@ ssize_t simple_attr_read(struct file *file, char __user *buf,
if (!attr->get)
return -EACCES;
- down(&attr->sem);
+ mutex_lock(&attr->mutex);
if (*ppos) /* continued read */
size = strlen(attr->get_buf);
else /* first read */
@@ -584,7 +586,7 @@ ssize_t simple_attr_read(struct file *file, char __user *buf,
(unsigned long long)attr->get(attr->data));
ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size);
- up(&attr->sem);
+ mutex_unlock(&attr->mutex);
return ret;
}
@@ -602,7 +604,7 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
if (!attr->set)
return -EACCES;
- down(&attr->sem);
+ mutex_lock(&attr->mutex);
ret = -EFAULT;
size = min(sizeof(attr->set_buf) - 1, len);
if (copy_from_user(attr->set_buf, buf, size))
@@ -613,7 +615,7 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
val = simple_strtol(attr->set_buf, NULL, 0);
attr->set(attr->data, val);
out:
- up(&attr->sem);
+ mutex_unlock(&attr->mutex);
return ret;
}