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path: root/arch/powerpc/platforms/cell/spufs/inode.c
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Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/inode.c')
-rw-r--r--arch/powerpc/platforms/cell/spufs/inode.c123
1 files changed, 42 insertions, 81 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index 66519d263da..dba1ce235da 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -186,10 +186,13 @@ static void spufs_prune_dir(struct dentry *dir)
static int spufs_rmdir(struct inode *parent, struct dentry *dir)
{
/* remove all entries */
+ int res;
spufs_prune_dir(dir);
d_drop(dir);
-
- return simple_rmdir(parent, dir);
+ res = simple_rmdir(parent, dir);
+ /* We have to give up the mm_struct */
+ spu_forget(SPUFS_I(dir->d_inode)->i_ctx);
+ return res;
}
static int spufs_fill_dir(struct dentry *dir,
@@ -245,9 +248,6 @@ static int spufs_dir_close(struct inode *inode, struct file *file)
mutex_unlock(&parent->i_mutex);
WARN_ON(ret);
- /* We have to give up the mm_struct */
- spu_forget(ctx);
-
return dcache_dir_close(inode, file);
}
@@ -317,28 +317,23 @@ out:
return ret;
}
-static int spufs_context_open(struct dentry *dentry, struct vfsmount *mnt)
+static int spufs_context_open(struct path *path)
{
int ret;
struct file *filp;
ret = get_unused_fd();
- if (ret < 0) {
- dput(dentry);
- mntput(mnt);
- goto out;
- }
+ if (ret < 0)
+ return ret;
- filp = dentry_open(dentry, mnt, O_RDONLY, current_cred());
+ filp = dentry_open(path, O_RDONLY, current_cred());
if (IS_ERR(filp)) {
put_unused_fd(ret);
- ret = PTR_ERR(filp);
- goto out;
+ return PTR_ERR(filp);
}
filp->f_op = &spufs_context_fops;
fd_install(ret, filp);
-out:
return ret;
}
@@ -453,29 +448,26 @@ spufs_create_context(struct inode *inode, struct dentry *dentry,
int affinity;
struct spu_gang *gang;
struct spu_context *neighbor;
+ struct path path = {.mnt = mnt, .dentry = dentry};
- ret = -EPERM;
if ((flags & SPU_CREATE_NOSCHED) &&
!capable(CAP_SYS_NICE))
- goto out_unlock;
+ return -EPERM;
- ret = -EINVAL;
if ((flags & (SPU_CREATE_NOSCHED | SPU_CREATE_ISOLATE))
== SPU_CREATE_ISOLATE)
- goto out_unlock;
+ return -EINVAL;
- ret = -ENODEV;
if ((flags & SPU_CREATE_ISOLATE) && !isolated_loader)
- goto out_unlock;
+ return -ENODEV;
gang = NULL;
neighbor = NULL;
affinity = flags & (SPU_CREATE_AFFINITY_MEM | SPU_CREATE_AFFINITY_SPU);
if (affinity) {
gang = SPUFS_I(inode)->i_gang;
- ret = -EINVAL;
if (!gang)
- goto out_unlock;
+ return -EINVAL;
mutex_lock(&gang->aff_mutex);
neighbor = spufs_assert_affinity(flags, gang, aff_filp);
if (IS_ERR(neighbor)) {
@@ -495,27 +487,13 @@ spufs_create_context(struct inode *inode, struct dentry *dentry,
put_spu_context(neighbor);
}
- /*
- * get references for dget and mntget, will be released
- * in error path of *_open().
- */
- ret = spufs_context_open(dget(dentry), mntget(mnt));
- if (ret < 0) {
+ ret = spufs_context_open(&path);
+ if (ret < 0)
WARN_ON(spufs_rmdir(inode, dentry));
- if (affinity)
- mutex_unlock(&gang->aff_mutex);
- mutex_unlock(&inode->i_mutex);
- spu_forget(SPUFS_I(dentry->d_inode)->i_ctx);
- goto out;
- }
out_aff_unlock:
if (affinity)
mutex_unlock(&gang->aff_mutex);
-out_unlock:
- mutex_unlock(&inode->i_mutex);
-out:
- dput(dentry);
return ret;
}
@@ -556,28 +534,27 @@ out:
return ret;
}
-static int spufs_gang_open(struct dentry *dentry, struct vfsmount *mnt)
+static int spufs_gang_open(struct path *path)
{
int ret;
struct file *filp;
ret = get_unused_fd();
- if (ret < 0) {
- dput(dentry);
- mntput(mnt);
- goto out;
- }
+ if (ret < 0)
+ return ret;
- filp = dentry_open(dentry, mnt, O_RDONLY, current_cred());
+ /*
+ * get references for dget and mntget, will be released
+ * in error path of *_open().
+ */
+ filp = dentry_open(path, O_RDONLY, current_cred());
if (IS_ERR(filp)) {
put_unused_fd(ret);
- ret = PTR_ERR(filp);
- goto out;
+ return PTR_ERR(filp);
}
filp->f_op = &simple_dir_operations;
fd_install(ret, filp);
-out:
return ret;
}
@@ -585,25 +562,17 @@ static int spufs_create_gang(struct inode *inode,
struct dentry *dentry,
struct vfsmount *mnt, umode_t mode)
{
+ struct path path = {.mnt = mnt, .dentry = dentry};
int ret;
ret = spufs_mkgang(inode, dentry, mode & S_IRWXUGO);
- if (ret)
- goto out;
-
- /*
- * get references for dget and mntget, will be released
- * in error path of *_open().
- */
- ret = spufs_gang_open(dget(dentry), mntget(mnt));
- if (ret < 0) {
- int err = simple_rmdir(inode, dentry);
- WARN_ON(err);
+ if (!ret) {
+ ret = spufs_gang_open(&path);
+ if (ret < 0) {
+ int err = simple_rmdir(inode, dentry);
+ WARN_ON(err);
+ }
}
-
-out:
- mutex_unlock(&inode->i_mutex);
- dput(dentry);
return ret;
}
@@ -613,40 +582,32 @@ static struct file_system_type spufs_type;
long spufs_create(struct path *path, struct dentry *dentry,
unsigned int flags, umode_t mode, struct file *filp)
{
+ struct inode *dir = path->dentry->d_inode;
int ret;
- ret = -EINVAL;
/* check if we are on spufs */
if (path->dentry->d_sb->s_type != &spufs_type)
- goto out;
+ return -EINVAL;
/* don't accept undefined flags */
if (flags & (~SPU_CREATE_FLAG_ALL))
- goto out;
+ return -EINVAL;
/* only threads can be underneath a gang */
- if (path->dentry != path->dentry->d_sb->s_root) {
- if ((flags & SPU_CREATE_GANG) ||
- !SPUFS_I(path->dentry->d_inode)->i_gang)
- goto out;
- }
+ if (path->dentry != path->dentry->d_sb->s_root)
+ if ((flags & SPU_CREATE_GANG) || !SPUFS_I(dir)->i_gang)
+ return -EINVAL;
mode &= ~current_umask();
if (flags & SPU_CREATE_GANG)
- ret = spufs_create_gang(path->dentry->d_inode,
- dentry, path->mnt, mode);
+ ret = spufs_create_gang(dir, dentry, path->mnt, mode);
else
- ret = spufs_create_context(path->dentry->d_inode,
- dentry, path->mnt, flags, mode,
+ ret = spufs_create_context(dir, dentry, path->mnt, flags, mode,
filp);
if (ret >= 0)
- fsnotify_mkdir(path->dentry->d_inode, dentry);
- return ret;
+ fsnotify_mkdir(dir, dentry);
-out:
- mutex_unlock(&path->dentry->d_inode->i_mutex);
- dput(dentry);
return ret;
}