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authorPatrick McHardy <kaber@trash.net>2011-01-19 23:51:37 +0100
committerPatrick McHardy <kaber@trash.net>2011-01-19 23:51:37 +0100
commit14f0290ba44de6ed435fea24bba26e7868421c66 (patch)
tree449d32e4848007e3edbcab14fa8e09fdc66608ed /fs/xfs/xfs_trans_extfree.c
parentf5c88f56b35599ab9ff2d3398e0153e4cd4a4c82 (diff)
parenta5db219f4cf9f67995eabd53b81a1232c82f5852 (diff)
Merge branch 'master' of /repos/git/net-next-2.6
Diffstat (limited to 'fs/xfs/xfs_trans_extfree.c')
-rw-r--r--fs/xfs/xfs_trans_extfree.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/xfs/xfs_trans_extfree.c b/fs/xfs/xfs_trans_extfree.c
index f783d5e9fa7..f7590f5bade 100644
--- a/fs/xfs/xfs_trans_extfree.c
+++ b/fs/xfs/xfs_trans_extfree.c
@@ -69,12 +69,16 @@ xfs_trans_log_efi_extent(xfs_trans_t *tp,
tp->t_flags |= XFS_TRANS_DIRTY;
efip->efi_item.li_desc->lid_flags |= XFS_LID_DIRTY;
- next_extent = efip->efi_next_extent;
+ /*
+ * atomic_inc_return gives us the value after the increment;
+ * we want to use it as an array index so we need to subtract 1 from
+ * it.
+ */
+ next_extent = atomic_inc_return(&efip->efi_next_extent) - 1;
ASSERT(next_extent < efip->efi_format.efi_nextents);
extp = &(efip->efi_format.efi_extents[next_extent]);
extp->ext_start = start_block;
extp->ext_len = ext_len;
- efip->efi_next_extent++;
}