[PATCH] xfs: fix bad dquot buffer size in log recovery readahead

[Ben Myers]

On Tue, Aug 27, 2013 at 01:25:43PM +1000, Dave Chinner wrote:
> From: Dave Chinner <dchinner at redhat.com>
> 
> xfstests xfs/087 fails 100% reliably with this assert:
> 
> XFS (vdb): Mounting Filesystem
> XFS (vdb): Starting recovery (logdev: internal)
> XFS: Assertion failed: bp->b_flags & XBF_STALE, file: fs/xfs/xfs_buf.c, line: 548
> 
> while trying to read a dquot buffer in xlog_recover_dquot_ra_pass2().
> 
> The issue is that the buffer length to read that is passed to
> xfs_buf_readahead is in units of filesystem blocks, not disk blocks.
> (i.e. FSB, not daddr). Fix it but putting the correct conversion in
> place.
> 
> Signed-off-by: Dave Chinner <dchinner at redhat.com>

Looks good.

Reviewed-by: Ben Myers <bpm at sgi.com>