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GFS2: Stop looking for free blocks at end of rgrp 

This patch adds a return code check after calling function
gfs2_rbm_from_block while determining the free extent size.
That way, when the end of an rgrp is reached, it won't try
to process unaligned blocks after the end.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Bob Peterson 2012-12-20 13:21:07 -05:00 committed by Steven Whitehouse
parent f1213cacc7
commit 15bd50ad82
1 changed files with 7 additions and 3 deletions
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10
fs/gfs2/rgrp.c
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@ -350,10 +350,14 @@ static u32 gfs2_free_extlen(const struct gfs2_rbm *rrbm, u32 len)
BUG_ON(len < chunk_size);
len -= chunk_size;
block = gfs2_rbm_to_block(&rbm);
gfs2_rbm_from_block(&rbm, block + chunk_size);
n_unaligned = 3;
if (ptr)
if (gfs2_rbm_from_block(&rbm, block + chunk_size)) {
n_unaligned = 0;
break;
}
if (ptr) {
n_unaligned = 3;
break;
}
n_unaligned = len & 3;
}