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pass a struct path to vfs_statfs

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We'll need the path to implement the flags field for statvfs support.
We do have it available in all callers except:

 - ecryptfs_statfs.  This one doesn't actually need vfs_statfs but just
   needs to do a caller to the lower filesystem statfs method.
 - sys_ustat.  Add a non-exported statfs_by_dentry helper for it which
   doesn't won't be able to fill out the flags field later on.

In addition rename the helpers for statfs vs fstatfs to do_*statfs instead
of the misleading vfs prefix.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Christoph Hellwig 2010-07-07 18:53:11 +02:00 • committed by Al Viro
commit ebabe9a900
11 changed files with 67 additions and 46 deletions
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6
fs/ecryptfs/super.c
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@ -118,7 +118,11 @@ void ecryptfs_init_inode(struct inode *inode, struct inode *lower_inode)
*/
static int ecryptfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
return vfs_statfs(ecryptfs_dentry_to_lower(dentry), buf);
struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
if (!lower_dentry->d_sb->s_op->statfs)
return -ENOSYS;
return lower_dentry->d_sb->s_op->statfs(lower_dentry, buf);
}
/**