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Commit 1ccaba30 authored by Abhijith Das's avatar Abhijith Das Committed by Steven Whitehouse
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GFS2: Remove old, unused linked list code from quota 



This is the kernel portion of the patch-set for upstream gfs2,
to remove the quota-linked-list stuff and replace it with
fiemap-based traversal of the quota file.

The corresponding userland fixes have been pushed to
STABLE3 and master branches of cluster.git and gfs2-utils.git
respectively (Refer Red Hat bug #536902).

Signed-off-by: default avatarAbhi Das <adas@redhat.com>
Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
parent c1184f8a

include/linux/gfs2_ondisk.h

+1 −29
Original line number Diff line number Diff line
@@ -179,33 +179,6 @@ struct gfs2_rgrp { 
	__u8 rg_reserved[80]; /* Several fields from gfs1 now reserved */

};



/*

 * quota linked list: user quotas and group quotas form two separate 

 * singly linked lists. ll_next stores uids or gids of next quotas in the 

 * linked list.



Given the uid/gid, how to calculate the quota file offsets for the corresponding

gfs2_quota structures on disk:



for user quotas, given uid,

offset = uid * sizeof(struct gfs2_quota);



for group quotas, given gid,

offset = (gid * sizeof(struct gfs2_quota)) + sizeof(struct gfs2_quota);





  uid:0   gid:0       uid:12   gid:12      uid:17   gid:17     uid:5142 gid:5142

+-------+-------+    +-------+-------+    +-------+- - - -+    +- - - -+-------+

| valid | valid | :: | valid | valid | :: | valid | inval | :: | inval | valid |

+-------+-------+    +-------+-------+    +-------+- - - -+    +- - - -+-------+

next:12   next:12    next:17 next:5142    next:NULL                    next:NULL

    |       |            |       |            |<-- user quota list         |

     \______|___________/ \______|___________/         group quota list -->|

            |                    |                                         |

             \__________________/ \_______________________________________/



*/



/*

 * quota structure

 */
@@ -214,8 +187,7 @@ struct gfs2_quota { 
	__be64 qu_limit;

	__be64 qu_warn;

	__be64 qu_value;

	__be32 qu_ll_next; /* location of next quota in list */

	__u8 qu_reserved[60];

	__u8 qu_reserved[64];

};



/*