[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, 4 insertions, 4 deletions

diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index 0404783f39b3..7f8b27e40916 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -197,8 +197,8 @@ static int gfs2_dir_write_data(struct gfs2_inode *ip, const char *buf,
 
                 if (!extlen) {
                         new = 1;
-                        error = gfs2_block_map(ip, lblock, &new, &dblock,
-                                               &extlen);
+                        error = gfs2_extent_map(ip->i_vnode, lblock, &new,
+                                                &dblock, &extlen);
                         if (error)
                                 goto fail;
                         error = -EIO;
@@ -314,8 +314,8 @@ static int gfs2_dir_read_data(struct gfs2_inode *ip, char *buf,
 
                 if (!extlen) {
                         new = 0;
-                        error = gfs2_block_map(ip, lblock, &new, &dblock,
-                                               &extlen);
+                        error = gfs2_extent_map(ip->i_vnode, lblock, &new,
+                                                &dblock, &extlen);
                         if (error)
                                 goto fail;
                 }