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wrappers for ->i_mutex access

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parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
inode_foo(inode) being mutex_foo(&inode->i_mutex).

Please, use those for access to ->i_mutex; over the coming cycle
->i_mutex will become rwsem, with ->lookup() done with it held
only shared.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2016-01-22 15:40:57 -05:00
parent 57b8f112cf
commit 5955102c99
177 changed files with 908 additions and 883 deletions
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10
fs/namespace.c
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@@ -1961,9 +1961,9 @@ static struct mountpoint *lock_mount(struct path *path)
struct vfsmount *mnt;
struct dentry *dentry = path->dentry;
retry:
mutex_lock(&dentry->d_inode->i_mutex);
inode_lock(dentry->d_inode);
if (unlikely(cant_mount(dentry))) {
mutex_unlock(&dentry->d_inode->i_mutex);
inode_unlock(dentry->d_inode);
return ERR_PTR(-ENOENT);
}
namespace_lock();
@@ -1974,13 +1974,13 @@ retry:
mp = new_mountpoint(dentry);
if (IS_ERR(mp)) {
namespace_unlock();
mutex_unlock(&dentry->d_inode->i_mutex);
inode_unlock(dentry->d_inode);
return mp;
}
return mp;
}
namespace_unlock();
mutex_unlock(&path->dentry->d_inode->i_mutex);
inode_unlock(path->dentry->d_inode);
path_put(path);
path->mnt = mnt;
dentry = path->dentry = dget(mnt->mnt_root);
@@ -1992,7 +1992,7 @@ static void unlock_mount(struct mountpoint *where)
struct dentry *dentry = where->m_dentry;
put_mountpoint(where);
namespace_unlock();
mutex_unlock(&dentry->d_inode->i_mutex);
inode_unlock(dentry->d_inode);
}
static int graft_tree(struct mount *mnt, struct mount *p, struct mountpoint *mp)