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[GFS2] Fix bmap to map extents properly

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This fix means that bmap will map extents of the length requested
by the VFS rather than guessing at it, or just mapping one block
at a time. The other callers of gfs2_block_map are audited to ensure
they send the correct max extent lengths (i.e. set bh->b_size correctly).

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse
2006-10-13 17:25:45 -04:00
parent 42fb00838a
commit 23591256d6
6 changed files with 21 additions and 16 deletions
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5
fs/gfs2/quota.c
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@ -251,7 +251,7 @@ static int bh_get(struct gfs2_quota_data *qd)
unsigned int block, offset;
struct buffer_head *bh;
int error;
struct buffer_head bh_map;
struct buffer_head bh_map = { .b_state = 0, .b_blocknr = 0 };
mutex_lock(&sdp->sd_quota_mutex);
@ -263,7 +263,8 @@ static int bh_get(struct gfs2_quota_data *qd)
block = qd->qd_slot / sdp->sd_qc_per_block;
offset = qd->qd_slot % sdp->sd_qc_per_block;;
error = gfs2_block_map(&ip->i_inode, block, 0, &bh_map, 1);
bh_map.b_size = 1 << ip->i_inode.i_blkbits;
error = gfs2_block_map(&ip->i_inode, block, 0, &bh_map);
if (error)
goto fail;
error = gfs2_meta_read(ip->i_gl, bh_map.b_blocknr, DIO_WAIT, &bh);