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Old 12-17-2010, 11:24 AM
Steven Whitehouse
Default GFS2: fsck.gfs2 reported statfs error after gfs2_grow

From: Bob Peterson <rpeterso@redhat.com>

When you do gfs2_grow it failed to take the very last
rgrp into account when adding up the new free space due
to an off-by-one error. It was not reading the last
rgrp from the rindex because of a check for "<=" that
should have been "<". Therefore, fsck.gfs2 was finding
(and fixing) an error with the system statfs file.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>

diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 25dbe5c..7293ea2 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -500,7 +500,7 @@ u64 gfs2_ri_total(struct gfs2_sbd *sdp)
for (rgrps = 0;; rgrps++) {
loff_t pos = rgrps * sizeof(struct gfs2_rindex);

- if (pos + sizeof(struct gfs2_rindex) >= i_size_read(inode))
+ if (pos + sizeof(struct gfs2_rindex) > i_size_read(inode))
error = gfs2_internal_read(ip, &ra_state, buf, &pos,
sizeof(struct gfs2_rindex));

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