[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
This patch converts the inode semaphore to a mutex. I have tested it on
XFS and compiled as much as one can consider on an ia64. Anyway your
luck with it might be different.
Modified-by: Ingo Molnar <mingo@elte.hu>
(finished the conversion)
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index df4019f..bb36b43 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -390,12 +390,12 @@
error = -EOPNOTSUPP;
if (inode->i_op && inode->i_op->setxattr) {
- down(&inode->i_sem);
+ mutex_lock(&inode->i_mutex);
security_inode_setxattr(dentry, key, buf, len, 0);
error = inode->i_op->setxattr(dentry, key, buf, len, 0);
if (!error)
security_inode_post_setxattr(dentry, key, buf, len, 0);
- up(&inode->i_sem);
+ mutex_unlock(&inode->i_mutex);
}
out:
kfree(buf);
@@ -739,9 +739,9 @@
int err;
struct inode *inode = filp->f_dentry->d_inode;
dprintk("nfsd: sync file %s\n", filp->f_dentry->d_name.name);
- down(&inode->i_sem);
+ mutex_lock(&inode->i_mutex);
err=nfsd_dosync(filp, filp->f_dentry, filp->f_op);
- up(&inode->i_sem);
+ mutex_unlock(&inode->i_mutex);
return err;
}
@@ -885,9 +885,9 @@
struct iattr ia;
ia.ia_valid = ATTR_KILL_SUID | ATTR_KILL_SGID;
- down(&dentry->d_inode->i_sem);
+ mutex_lock(&dentry->d_inode->i_mutex);
notify_change(dentry, &ia);
- up(&dentry->d_inode->i_sem);
+ mutex_unlock(&dentry->d_inode->i_mutex);
}
static inline int