diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:55:21 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:55:21 -0700 |
| commit | bbb20089a3275a19e475dbc21320c3742e3ca423 (patch) | |
| tree | 216fdc1cbef450ca688135c5b8969169482d9a48 /fs/configfs/inode.c | |
| parent | 3e48e656903e9fd8bc805c6a2c4264d7808d315b (diff) | |
| parent | 657a77fa7284d8ae28dfa48f1dc5d919bf5b2843 (diff) | |
Merge branch 'dmaengine' into async-tx-next
Conflicts:
crypto/async_tx/async_xor.c
drivers/dma/ioat/dma_v2.h
drivers/dma/ioat/pci.c
drivers/md/raid5.c
Diffstat (limited to 'fs/configfs/inode.c')
| -rw-r--r-- | fs/configfs/inode.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c index 5d349d38e05..4921e7426d9 100644 --- a/fs/configfs/inode.c +++ b/fs/configfs/inode.c @@ -33,10 +33,15 @@ #include <linux/backing-dev.h> #include <linux/capability.h> #include <linux/sched.h> +#include <linux/lockdep.h> #include <linux/configfs.h> #include "configfs_internal.h" +#ifdef CONFIG_LOCKDEP +static struct lock_class_key default_group_class[MAX_LOCK_DEPTH]; +#endif + extern struct super_block * configfs_sb; static const struct address_space_operations configfs_aops = { @@ -150,6 +155,38 @@ struct inode * configfs_new_inode(mode_t mode, struct configfs_dirent * sd) return inode; } +#ifdef CONFIG_LOCKDEP + +static void configfs_set_inode_lock_class(struct configfs_dirent *sd, + struct inode *inode) +{ + int depth = sd->s_depth; + + if (depth > 0) { + if (depth <= ARRAY_SIZE(default_group_class)) { + lockdep_set_class(&inode->i_mutex, + &default_group_class[depth - 1]); + } else { + /* + * In practice the maximum level of locking depth is + * already reached. Just inform about possible reasons. + */ + printk(KERN_INFO "configfs: Too many levels of inodes" + " for the locking correctness validator.\n"); + printk(KERN_INFO "Spurious warnings may appear.\n"); + } + } +} + +#else /* CONFIG_LOCKDEP */ + +static void configfs_set_inode_lock_class(struct configfs_dirent *sd, + struct inode *inode) +{ +} + +#endif /* CONFIG_LOCKDEP */ + int configfs_create(struct dentry * dentry, int mode, int (*init)(struct inode *)) { int error = 0; @@ -162,6 +199,7 @@ int configfs_create(struct dentry * dentry, int mode, int (*init)(struct inode * struct inode *p_inode = dentry->d_parent->d_inode; p_inode->i_mtime = p_inode->i_ctime = CURRENT_TIME; } + configfs_set_inode_lock_class(sd, inode); goto Proceed; } else |