[GFS2] Readpages support

This adds readpages support (and also corrects a small bug in
the readpage error path at the same time). Hopefully this will
improve performance by allowing GFS to submit larger lumps of
I/O at a time.

In order to simplify the setting of BH_Boundary, it currently gets
set when we hit the end of a indirect pointer block. There is
always a boundary at this point with the current allocation code.
It doesn't get all the boundaries right though, so there is still
room for improvement in this.

See comments in fs/gfs2/ops_address.c for further information about
readpages with GFS2.

Signed-off-by: Steven Whitehouse

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 134fc57e21d3..02d31e35f0ca 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -211,9 +211,9 @@ static uint64_t log_bmap(struct gfs2_sbd *sdp, unsigned int lbn)
         int new = 0;
         uint64_t dbn;
         int error;
+        int bdy;
 
-        error = gfs2_block_map(sdp->sd_jdesc->jd_inode->u.generic_ip,
-                               lbn, &new, &dbn, NULL);
+        error = gfs2_block_map(sdp->sd_jdesc->jd_inode, lbn, &new, &dbn, &bdy);
         gfs2_assert_withdraw(sdp, !error && dbn);
 
         return dbn;