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authorTejun Heo <htejun@gmail.com>2007-06-13 15:27:23 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-11 19:09:08 -0400
commit3007e997de91ec59af39a3f9c91595b31ae6e08b (patch)
tree4ed4df3ef3a249d2a4b562e36876fc8d4a3fabd9 /fs/sysfs/sysfs.h
parent5f9953237f684ea1778adb9d26162da00b282225 (diff)
sysfs: use sysfs_mutex to protect the sysfs_dirent tree
As kobj sysfs dentries and inodes are gonna be made reclaimable, i_mutex can't be used to protect sysfs_dirent tree. Use sysfs_mutex globally instead. As the whole tree is protected with sysfs_mutex, there is no reason to keep sysfs_rename_sem. Drop it. While at it, add docbook comments to functions which require sysfs_mutex locking. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs/sysfs.h')
-rw-r--r--fs/sysfs/sysfs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 457267721f4..26051616ed1 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -82,7 +82,7 @@ extern void sysfs_drop_dentry(struct sysfs_dirent *sd);
82extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr); 82extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
83 83
84extern spinlock_t sysfs_assoc_lock; 84extern spinlock_t sysfs_assoc_lock;
85extern struct rw_semaphore sysfs_rename_sem; 85extern struct mutex sysfs_mutex;
86extern struct super_block * sysfs_sb; 86extern struct super_block * sysfs_sb;
87extern const struct file_operations sysfs_dir_operations; 87extern const struct file_operations sysfs_dir_operations;
88extern const struct file_operations sysfs_file_operations; 88extern const struct file_operations sysfs_file_operations;