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Old 08-03-2012, 11:30 AM
Steven Whitehouse
 
Default GFS2: Update gfs2_get_block_type() to use rbm

>From 266cb9a5b59bd6fefa9d302c03fbde46308957db Mon Sep 17 00:00:00 2001
From: Steven Whitehouse <swhiteho@redhat.com>
Date: Fri, 3 Aug 2012 11:10:30 +0100
Subject: GFS2: Update gfs2_get_block_type() to use rbm

Use the new gfs2_rbm_from_block() function to replace an open
coded version of the same code.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index bd3b926..0c1be38 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -1824,27 +1824,14 @@ void gfs2_inplace_release(struct gfs2_inode *ip)

static unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block)
{
- struct gfs2_bitmap *bi = NULL;
- u32 length, rgrp_block, buf_block;
- unsigned int buf;
- unsigned char type;
-
- length = rgd->rd_length;
- rgrp_block = block - rgd->rd_data0;
-
- for (buf = 0; buf < length; buf++) {
- bi = rgd->rd_bits + buf;
- if (rgrp_block < (bi->bi_start + bi->bi_len) * GFS2_NBBY)
- break;
- }
-
- gfs2_assert(rgd->rd_sbd, buf < length);
- buf_block = rgrp_block - bi->bi_start * GFS2_NBBY;
+ struct gfs2_rbm rbm = { .rgd = rgd, };
+ int ret;

- type = gfs2_testbit(rgd, bi->bi_bh->b_data + bi->bi_offset,
- bi->bi_len, buf_block);
+ ret = gfs2_rbm_from_block(&rbm, block);
+ WARN_ON_ONCE(ret != 0);

- return type;
+ return gfs2_testbit(rgd, rbm.bi->bi_bh->b_data + rbm.bi->bi_offset,
+ rbm.bi->bi_len, rbm.offset);
}


--
1.7.4
 

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