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nfs: get rid of mount_info ->fill_super()

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The only possible values are nfs_fill_super and nfs_clone_super.  The
latter is used only when crossing into a submount and it is almost
identical to the former; the only differences are
	* ->s_time_gran unconditionally set to 1 (even for v2 mounts).
Regression dating back to 2012, actually.
	* ->s_blocksize/->s_blocksize_bits set to that of parent.

Rather than messing with the method, stash ->s_blocksize_bits in
mount_info in submount case and after the (now unconditional)
call of nfs_fill_super() override ->s_blocksize/->s_blocksize_bits
if that has been set.

Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Al Viro
2019-12-10 07:31:01 -05:00
committed by Anna Schumaker
parent 0c38f2131d
commit ab88dca311
4 changed files with 18 additions and 64 deletions
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4
fs/nfs/internal.h
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@@ -136,7 +136,7 @@ struct nfs_mount_request {
};
struct nfs_mount_info {
void (*fill_super)(struct super_block *, struct nfs_mount_info *);
unsigned int inherited_bsize;
int (*set_security)(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct nfs_parsed_mount_data *parsed;
struct nfs_clone_mount *cloned;
@@ -395,8 +395,6 @@ int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_
int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *);
void nfs_kill_super(struct super_block *);
void nfs_fill_super(struct super_block *, struct nfs_mount_info *);
void nfs_clone_super(struct super_block *, struct nfs_mount_info *);
extern struct rpc_stat nfs_rpcstat;