Commit ec86ff56 authored by Amir Goldstein's avatar Amir Goldstein Committed by Jan Kara
Browse files

vfs: add vfs_get_fsid() helper 



Wrapper around statfs() interface.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarAmir Goldstein <amir73il@gmail.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 77115225

fs/statfs.c

+14 −0
Original line number Diff line number Diff line
@@ -67,6 +67,20 @@ static int statfs_by_dentry(struct dentry *dentry, struct kstatfs *buf) 
	return retval;

}



int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid)

{

	struct kstatfs st;

	int error;



	error = statfs_by_dentry(dentry, &st);

	if (error)

		return error;



	*fsid = st.f_fsid;

	return 0;

}

EXPORT_SYMBOL(vfs_get_fsid);



int vfs_statfs(const struct path *path, struct kstatfs *buf)

{

	int error;

include/linux/statfs.h

+3 −0
Original line number Diff line number Diff line
@@ -41,4 +41,7 @@ struct kstatfs { 
#define ST_NODIRATIME	0x0800	/* do not update directory access times */

#define ST_RELATIME	0x1000	/* update atime relative to mtime/ctime */



struct dentry;

extern int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid);



#endif