3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Steven Whitehouse <swhiteho@xxxxxxxxxx>
commit 1b2ad41214c9bf6e8befa000f0522629194bf540 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/gfs2/meta_io.c | 5 +++++
fs/gfs2/meta_io.h | 3 +++
fs/gfs2/ops_fstype.c | 2 +-
3 files changed, 9 insertions(+), 1 deletion(-)
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -97,6 +97,11 @@ const struct address_space_operations gf
.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
--- a/fs/gfs2/meta_io.h
+++ b/fs/gfs2/meta_io.h
@@ -38,12 +38,15 @@ static inline void gfs2_buffer_copy_tail
}
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;
}
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -104,7 +104,7 @@ static struct gfs2_sbd *init_sbd(struct
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);
--
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