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authorSteven Whitehouse <swhiteho@redhat.com>2008-08-08 13:45:13 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2008-08-13 09:59:40 +0100
commit9b8df98fc8973ad1c5f0d7c4cf71c7fb84fe22c5 (patch)
tree6a0445afd83d0f7a63a301c2e146647abf59ad82 /fs/gfs2/super.h
parentc1e817d03a7de57a963654c35e6e80af9a5dbff5 (diff)
downloadlwn-9b8df98fc8973ad1c5f0d7c4cf71c7fb84fe22c5.tar.gz
lwn-9b8df98fc8973ad1c5f0d7c4cf71c7fb84fe22c5.zip
GFS2: Fix metafs mounts
This patch is intended to fix the issues reported in bz #457798. Instead of having the metafs as a separate filesystem, it becomes a second root of gfs2. As a result it will appear as type gfs2 in /proc/mounts, but it is still possible (for backwards compatibility purposes) to mount it as type gfs2meta. A new mount flag "meta" is introduced so that its possible to tell the two cases apart in /proc/mounts. As a result it becomes possible to mount type gfs2 with -o meta and get the same result as mounting type gfs2meta. So it is possible to mount just the metafs on its own. Currently if you do this, its then impossible to mount the "normal" root of the gfs2 filesystem without first unmounting the metafs root. I'm not sure if thats a feature or a bug :-) Either way, this is a great improvement on the previous scheme and I've verified that it works ok with bind mounts on both the "normal" root and the metafs root in various combinations. There were also a bunch of functions in super.c which didn't belong there, so this moves them into ops_fstype.c where they can be static. Hopefully the mount/umount sequence is now more obvious as a result. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Alexander Viro <aviro@redhat.com>
Diffstat (limited to 'fs/gfs2/super.h')
-rw-r--r--fs/gfs2/super.h6
1 files changed, 0 insertions, 6 deletions
diff --git a/fs/gfs2/super.h b/fs/gfs2/super.h
index 44361ecc44f7..50a4c9b1215e 100644
--- a/fs/gfs2/super.h
+++ b/fs/gfs2/super.h
@@ -12,11 +12,6 @@
#include "incore.h"
-void gfs2_tune_init(struct gfs2_tune *gt);
-
-int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent);
-int gfs2_read_sb(struct gfs2_sbd *sdp, struct gfs2_glock *gl, int silent);
-int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector);
void gfs2_lm_unmount(struct gfs2_sbd *sdp);
static inline unsigned int gfs2_jindex_size(struct gfs2_sbd *sdp)
@@ -40,7 +35,6 @@ int gfs2_lookup_in_master_dir(struct gfs2_sbd *sdp, char *filename,
struct gfs2_inode **ipp);
int gfs2_make_fs_rw(struct gfs2_sbd *sdp);
-int gfs2_make_fs_ro(struct gfs2_sbd *sdp);
int gfs2_statfs_init(struct gfs2_sbd *sdp);
void gfs2_statfs_change(struct gfs2_sbd *sdp,