The patch titled
mm: bdi: expose the BDI object in sysfs for NFS
has been added to the -mm tree. Its filename is
mm-bdi-expose-the-bdi-object-in-sysfs-for-nfs.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mm: bdi: expose the BDI object in sysfs for NFS
From: Miklos Szeredi <mszeredi@xxxxxxx>
Register NFS' backing_dev_info under sysfs with the name "nfs-MAJOR:MINOR"
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Trond Myklebust <trond.myklebust@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/nfs/super.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff -puN fs/nfs/super.c~mm-bdi-expose-the-bdi-object-in-sysfs-for-nfs fs/nfs/super.c
--- a/fs/nfs/super.c~mm-bdi-expose-the-bdi-object-in-sysfs-for-nfs
+++ a/fs/nfs/super.c
@@ -1462,6 +1462,12 @@ static int nfs_compare_super(struct supe
return nfs_compare_mount_options(sb, server, mntflags);
}
+static int nfs_bdi_register(struct nfs_server *server)
+{
+ return bdi_register(&server->backing_dev_info, NULL, "nfs-%u:%u",
+ MAJOR(server->s_dev), MINOR(server->s_dev));
+}
+
static int nfs_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt)
{
@@ -1502,6 +1508,10 @@ static int nfs_get_sb(struct file_system
if (s->s_fs_info != server) {
nfs_free_server(server);
server = NULL;
+ } else {
+ error = nfs_bdi_register(server);
+ if (error)
+ goto error_splat_super;
}
if (!s->s_root) {
@@ -1542,6 +1552,7 @@ static void nfs_kill_super(struct super_
{
struct nfs_server *server = NFS_SB(s);
+ bdi_unregister(&server->backing_dev_info);
kill_anon_super(s);
nfs_free_server(server);
}
@@ -1586,6 +1597,10 @@ static int nfs_xdev_get_sb(struct file_s
if (s->s_fs_info != server) {
nfs_free_server(server);
server = NULL;
+ } else {
+ error = nfs_bdi_register(server);
+ if (error)
+ goto error_splat_super;
}
if (!s->s_root) {
@@ -1876,6 +1891,10 @@ static int nfs4_get_sb(struct file_syste
if (s->s_fs_info != server) {
nfs_free_server(server);
server = NULL;
+ } else {
+ error = nfs_bdi_register(server);
+ if (error)
+ goto error_splat_super;
}
if (!s->s_root) {
@@ -1961,6 +1980,10 @@ static int nfs4_xdev_get_sb(struct file_
if (s->s_fs_info != server) {
nfs_free_server(server);
server = NULL;
+ } else {
+ error = nfs_bdi_register(server);
+ if (error)
+ goto error_splat_super;
}
if (!s->s_root) {
@@ -2040,6 +2063,10 @@ static int nfs4_referral_get_sb(struct f
if (s->s_fs_info != server) {
nfs_free_server(server);
server = NULL;
+ } else {
+ error = nfs_bdi_register(server);
+ if (error)
+ goto error_splat_super;
}
if (!s->s_root) {
_
Patches currently in -mm which might be from mszeredi@xxxxxxx are
origin.patch
git-x86.patch
fuse-fix-attribute-caching-after-create.patch
fuse-save-space-in-struct-fuse_req.patch
fuse-limit-queued-background-requests.patch
mount-options-add-documentation.patch
mount-options-add-generic_show_options.patch
mount-options-fix-adfs.patch
mount-options-fix-affs.patch
mount-options-fix-afs.patch
mount-options-fix-autofs4.patch
mount-options-fix-autofs.patch
mount-options-fix-befs.patch
mount-options-fix-capifs.patch
mount-options-fix-devpts.patch
mount-options-fix-ext2.patch
mount-options-fix-fat.patch
mount-options-fix-fuse.patch
mount-options-fix-hostfs.patch
mount-options-fix-hpfs.patch
mount-options-fix-hugetlbfs.patch
mount-options-fix-isofs.patch
mount-options-fix-ncpfs.patch
mount-options-fix-reiserfs.patch
mount-options-fix-spufs.patch
mount-options-fix-tmpfs.patch
mount-options-fix-udf.patch
vfs-create-proc-pid-mountinfo.patch
mm-bdi-export-bdi-attributes-in-sysfs.patch
mm-bdi-expose-the-bdi-object-in-sysfs-for-nfs.patch
mm-bdi-expose-the-bdi-object-in-sysfs-for-fuse.patch
mm-bdi-allow-setting-a-minimum-for-the-bdi-dirty-limit.patch
mm-bdi-allow-setting-a-maximum-for-the-bdi-dirty-limit.patch
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