From: Dave Chinner <dchinner@xxxxxxxxxx>
For RT and external log devices, we never use hashed buffers on them
now. Remove the buftarg hash tables that are set up for them.
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
fs/xfs/linux-2.6/xfs_buf.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 304515b..1c6206e 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -1456,7 +1456,11 @@ xfs_alloc_bufhash(
{
unsigned int i;
- btp->bt_hashshift = external ? 3 : 12; /* 8 or 4096 buckets */
+ if (external) {
+ btp->bt_hash = NULL;
+ return;
+ }
+ btp->bt_hashshift = 12; /* 4096 buckets */
btp->bt_hash = kmem_zalloc_large((1 << btp->bt_hashshift) *
sizeof(xfs_bufhash_t));
for (i = 0; i < (1 << btp->bt_hashshift); i++) {
--
1.7.1
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