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[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem

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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>
This commit is contained in:
Jes Sorensen
2006-01-09 15:59:24 -08:00
committed by Ingo Molnar
parent 794ee1baee
commit 1b1dcc1b57
113 changed files with 563 additions and 573 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
net/sunrpc/rpc_pipe.c
View File

@@ -69,13 +69,13 @@ rpc_timeout_upcall_queue(void *data)
struct rpc_inode *rpci = (struct rpc_inode *)data;
struct inode *inode = &rpci->vfs_inode;
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
if (rpci->ops == NULL)
goto out;
if (rpci->nreaders == 0 && !list_empty(&rpci->pipe))
__rpc_purge_upcall(inode, -ETIMEDOUT);
out:
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
}
int
@@ -84,7 +84,7 @@ rpc_queue_upcall(struct inode *inode, struct rpc_pipe_msg *msg)
struct rpc_inode *rpci = RPC_I(inode);
int res = -EPIPE;
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
if (rpci->ops == NULL)
goto out;
if (rpci->nreaders) {
@@ -100,7 +100,7 @@ rpc_queue_upcall(struct inode *inode, struct rpc_pipe_msg *msg)
res = 0;
}
out:
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
wake_up(&rpci->waitq);
return res;
}
@@ -116,7 +116,7 @@ rpc_close_pipes(struct inode *inode)
{
struct rpc_inode *rpci = RPC_I(inode);
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
if (rpci->ops != NULL) {
rpci->nreaders = 0;
__rpc_purge_list(rpci, &rpci->in_upcall, -EPIPE);
@@ -127,7 +127,7 @@ rpc_close_pipes(struct inode *inode)
rpci->ops = NULL;
}
rpc_inode_setowner(inode, NULL);
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
cancel_delayed_work(&rpci->queue_timeout);
flush_scheduled_work();
}
@@ -154,7 +154,7 @@ rpc_pipe_open(struct inode *inode, struct file *filp)
struct rpc_inode *rpci = RPC_I(inode);
int res = -ENXIO;
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
if (rpci->ops != NULL) {
if (filp->f_mode & FMODE_READ)
rpci->nreaders ++;
@@ -162,7 +162,7 @@ rpc_pipe_open(struct inode *inode, struct file *filp)
rpci->nwriters ++;
res = 0;
}
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
return res;
}
@@ -172,7 +172,7 @@ rpc_pipe_release(struct inode *inode, struct file *filp)
struct rpc_inode *rpci = RPC_I(inode);
struct rpc_pipe_msg *msg;
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
if (rpci->ops == NULL)
goto out;
msg = (struct rpc_pipe_msg *)filp->private_data;
@@ -190,7 +190,7 @@ rpc_pipe_release(struct inode *inode, struct file *filp)
if (rpci->ops->release_pipe)
rpci->ops->release_pipe(inode);
out:
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
return 0;
}
@@ -202,7 +202,7 @@ rpc_pipe_read(struct file *filp, char __user *buf, size_t len, loff_t *offset)
struct rpc_pipe_msg *msg;
int res = 0;
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
if (rpci->ops == NULL) {
res = -EPIPE;
goto out_unlock;
@@ -229,7 +229,7 @@ rpc_pipe_read(struct file *filp, char __user *buf, size_t len, loff_t *offset)
rpci->ops->destroy_msg(msg);
}
out_unlock:
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
return res;
}
@@ -240,11 +240,11 @@ rpc_pipe_write(struct file *filp, const char __user *buf, size_t len, loff_t *of
struct rpc_inode *rpci = RPC_I(inode);
int res;
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
res = -EPIPE;
if (rpci->ops != NULL)
res = rpci->ops->downcall(filp, buf, len);
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
return res;
}
@@ -322,7 +322,7 @@ rpc_info_open(struct inode *inode, struct file *file)
if (!ret) {
struct seq_file *m = file->private_data;
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
clnt = RPC_I(inode)->private;
if (clnt) {
atomic_inc(&clnt->cl_users);
@@ -331,7 +331,7 @@ rpc_info_open(struct inode *inode, struct file *file)
single_release(inode, file);
ret = -EINVAL;
}
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
}
return ret;
}
@@ -491,7 +491,7 @@ rpc_depopulate(struct dentry *parent)
struct dentry *dentry, *dvec[10];
int n = 0;
down(&dir->i_sem);
mutex_lock(&dir->i_mutex);
repeat:
spin_lock(&dcache_lock);
list_for_each_safe(pos, next, &parent->d_subdirs) {
@@ -519,7 +519,7 @@ repeat:
} while (n);
goto repeat;
}
up(&dir->i_sem);
mutex_unlock(&dir->i_mutex);
}
static int
@@ -532,7 +532,7 @@ rpc_populate(struct dentry *parent,
struct dentry *dentry;
int mode, i;
down(&dir->i_sem);
mutex_lock(&dir->i_mutex);
for (i = start; i < eof; i++) {
dentry = d_alloc_name(parent, files[i].name);
if (!dentry)
@@ -552,10 +552,10 @@ rpc_populate(struct dentry *parent,
dir->i_nlink++;
d_add(dentry, inode);
}
up(&dir->i_sem);
mutex_unlock(&dir->i_mutex);
return 0;
out_bad:
up(&dir->i_sem);
mutex_unlock(&dir->i_mutex);
printk(KERN_WARNING "%s: %s failed to populate directory %s\n",
__FILE__, __FUNCTION__, parent->d_name.name);
return -ENOMEM;
@@ -609,7 +609,7 @@ rpc_lookup_negative(char *path, struct nameidata *nd)
if ((error = rpc_lookup_parent(path, nd)) != 0)
return ERR_PTR(error);
dir = nd->dentry->d_inode;
down(&dir->i_sem);
mutex_lock(&dir->i_mutex);
dentry = lookup_hash(nd);
if (IS_ERR(dentry))
goto out_err;
@@ -620,7 +620,7 @@ rpc_lookup_negative(char *path, struct nameidata *nd)
}
return dentry;
out_err:
up(&dir->i_sem);
mutex_unlock(&dir->i_mutex);
rpc_release_path(nd);
return dentry;
}
@@ -646,7 +646,7 @@ rpc_mkdir(char *path, struct rpc_clnt *rpc_client)
if (error)
goto err_depopulate;
out:
up(&dir->i_sem);
mutex_unlock(&dir->i_mutex);
rpc_release_path(&nd);
return dentry;
err_depopulate:
@@ -671,7 +671,7 @@ rpc_rmdir(char *path)
if ((error = rpc_lookup_parent(path, &nd)) != 0)
return error;
dir = nd.dentry->d_inode;
down(&dir->i_sem);
mutex_lock(&dir->i_mutex);
dentry = lookup_hash(&nd);
if (IS_ERR(dentry)) {
error = PTR_ERR(dentry);
@@ -681,7 +681,7 @@ rpc_rmdir(char *path)
error = __rpc_rmdir(dir, dentry);
dput(dentry);
out_release:
up(&dir->i_sem);
mutex_unlock(&dir->i_mutex);
rpc_release_path(&nd);
return error;
}
@@ -710,7 +710,7 @@ rpc_mkpipe(char *path, void *private, struct rpc_pipe_ops *ops, int flags)
rpci->ops = ops;
inode_dir_notify(dir, DN_CREATE);
out:
up(&dir->i_sem);
mutex_unlock(&dir->i_mutex);
rpc_release_path(&nd);
return dentry;
err_dput:
@@ -732,7 +732,7 @@ rpc_unlink(char *path)
if ((error = rpc_lookup_parent(path, &nd)) != 0)
return error;
dir = nd.dentry->d_inode;
down(&dir->i_sem);
mutex_lock(&dir->i_mutex);
dentry = lookup_hash(&nd);
if (IS_ERR(dentry)) {
error = PTR_ERR(dentry);
@@ -746,7 +746,7 @@ rpc_unlink(char *path)
dput(dentry);
inode_dir_notify(dir, DN_DELETE);
out_release:
up(&dir->i_sem);
mutex_unlock(&dir->i_mutex);
rpc_release_path(&nd);
return error;
}