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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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12
fs/devpts/inode.c
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@@ -255,7 +255,7 @@ static int mknod_ptmx(struct super_block *sb)
if (!uid_valid(root_uid) || !gid_valid(root_gid))
return -EINVAL;
mutex_lock(&d_inode(root)->i_mutex);
inode_lock(d_inode(root));
/* If we have already created ptmx node, return */
if (fsi->ptmx_dentry) {
@@ -292,7 +292,7 @@ static int mknod_ptmx(struct super_block *sb)
fsi->ptmx_dentry = dentry;
rc = 0;
out:
mutex_unlock(&d_inode(root)->i_mutex);
inode_unlock(d_inode(root));
return rc;
}
@@ -615,7 +615,7 @@ struct inode *devpts_pty_new(struct inode *ptmx_inode, dev_t device, int index,
sprintf(s, "%d", index);
mutex_lock(&d_inode(root)->i_mutex);
inode_lock(d_inode(root));
dentry = d_alloc_name(root, s);
if (dentry) {
@@ -626,7 +626,7 @@ struct inode *devpts_pty_new(struct inode *ptmx_inode, dev_t device, int index,
inode = ERR_PTR(-ENOMEM);
}
mutex_unlock(&d_inode(root)->i_mutex);
inode_unlock(d_inode(root));
return inode;
}
@@ -671,7 +671,7 @@ void devpts_pty_kill(struct inode *inode)
BUG_ON(inode->i_rdev == MKDEV(TTYAUX_MAJOR, PTMX_MINOR));
mutex_lock(&d_inode(root)->i_mutex);
inode_lock(d_inode(root));
dentry = d_find_alias(inode);
@@ -680,7 +680,7 @@ void devpts_pty_kill(struct inode *inode)
dput(dentry); /* d_alloc_name() in devpts_pty_new() */
dput(dentry); /* d_find_alias above */
mutex_unlock(&d_inode(root)->i_mutex);
inode_unlock(d_inode(root));
}
static int __init init_devpts_fs(void)