For 3.14 -stable
(already in 3.16 -stable)
-------------------------------------------------------------------
>From 1b2ad41214c9bf6e8befa000f0522629194bf540 Mon Sep 17 00:00:00 2001
From: Steven Whitehouse <swhiteho@xxxxxxxxxx>
Date: Mon, 31 Mar 2014 17:48:27 +0100
Subject: [PATCH] GFS2: Fix address space from page function
Now that rgrps use the address space which is part of the super
block, we need to update gfs2_mapping2sbd() to take account of
that. The only way to do that easily is to use a different set
of address_space_operations for rgrps.
Reported-by: Abhi Das <adas@xxxxxxxxxx>
Tested-by: Abhi Das <adas@xxxxxxxxxx>
Signed-off-by: Steven Whitehouse <swhiteho@xxxxxxxxxx>
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index 005e468..2cf09b6 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -97,6 +97,11 @@ const struct address_space_operations gfs2_meta_aops = {
.releasepage = gfs2_releasepage,
};
+const struct address_space_operations gfs2_rgrp_aops = {
+ .writepage = gfs2_aspace_writepage,
+ .releasepage = gfs2_releasepage,
+};
+
/**
* gfs2_getbuf - Get a buffer with a given address space
* @gl: the glock
diff --git a/fs/gfs2/meta_io.h b/fs/gfs2/meta_io.h
index 4823b93..ac5d802 100644
--- a/fs/gfs2/meta_io.h
+++ b/fs/gfs2/meta_io.h
@@ -38,12 +38,15 @@ static inline void gfs2_buffer_copy_tail(struct buffer_head *to_bh,
}
extern const struct address_space_operations gfs2_meta_aops;
+extern const struct address_space_operations gfs2_rgrp_aops;
static inline struct gfs2_sbd *gfs2_mapping2sbd(struct address_space *mapping)
{
struct inode *inode = mapping->host;
if (mapping->a_ops == &gfs2_meta_aops)
return (((struct gfs2_glock *)mapping) - 1)->gl_sbd;
+ else if (mapping->a_ops == &gfs2_rgrp_aops)
+ return container_of(mapping, struct gfs2_sbd, sd_aspace);
else
return inode->i_sb->s_fs_info;
}
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index fba74a2..22f9540 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -106,7 +106,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
mapping = &sdp->sd_aspace;
address_space_init_once(mapping);
- mapping->a_ops = &gfs2_meta_aops;
+ mapping->a_ops = &gfs2_rgrp_aops;
mapping->host = sb->s_bdev->bd_inode;
mapping->flags = 0;
mapping_set_gfp_mask(mapping, GFP_NOFS);
--
1.8.3.1
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html