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Old 03-01-2010, 02:08 PM
Steven Whitehouse
 
Default GFS2: Remove old, unused linked list code from quota

From: Abhijith Das <adas@redhat.com>

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: Abhi Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---
include/linux/gfs2_ondisk.h | 30 +-----------------------------
1 files changed, 1 insertions(+), 29 deletions(-)

diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h
index 81f90a5..4f44629 100644
--- a/include/linux/gfs2_ondisk.h
+++ b/include/linux/gfs2_ondisk.h
@@ -180,33 +180,6 @@ struct gfs2_rgrp {
};

/*
- * 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];
};

/*
--
1.6.2.5
 

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