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Btrfs: fix how we set max_size for free space clusters 

This patch fixes a problem where max_size can be set to 0 even though we
filled the cluster properly.  We set max_size to 0 if we restart the cluster
window, but if the new start entry is big enough to be our new cluster then we
could return with a max_size set to 0, which will mean the next time we try to
allocate from this cluster it will fail.  So set max_extent to the entry's
size.  Tested this on my box and now we actually allocate from the cluster
after we fill it.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Josef Bacik 2009-11-10 21:23:48 -05:00 committed by Chris Mason
parent 249ac1e55c
commit 01dea1efc2
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/free-space-cache.c
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@ -1296,7 +1296,7 @@ again:
window_start = entry->offset; window_start = entry->offset;
window_free = entry->bytes; window_free = entry->bytes;
last = entry; last = entry;
max_extent = 0; max_extent = entry->bytes;
} else { } else {
last = next; last = next;
window_free += next->bytes; window_free += next->bytes;