[PATCH V2] xfs: remove several unused and never-implemented declarations

[Zizhi Wo]

From: Zizhi Wo <wozizhi@xxxxxxxxxx>

Over time a number of function declarations in various headers have become
stale: either their implementations were removed when their last callers
went away, or they were never implemented in the first place. None of them
refer to anything anymore.

Remove the following dead declarations and the unused stub:

- xlog_assign_tail_lsn() and xlog_assign_tail_lsn_locked()
- xfs_iext_realloc()
- xfs_buf_iodone()
- xfs_scrub_tester() and xfs_scrub_setup_inode_bmap_data() (never
  implemented placeholders)
- the !CONFIG_XFS_ONLINE_REPAIR stub of xrep_tempfile_iolock_both()

Signed-off-by: Zizhi Wo <wozizhi@xxxxxxxxxx>
---
v2:
 - Squash the individual cleanup patches into a single patch, as suggested
   by Carlos.
 - Drop the former patch 4, since an equivalent change has already been
   merged upstream.
 - Remove the "Assisted-by:" tag.

v1: https://lore.kernel.org/all/20260904060648.1966130-1-wozizhi@xxxxxxxxxxxxxxx/

 fs/xfs/scrub/common.h   | 1 -
 fs/xfs/scrub/scrub.h    | 1 -
 fs/xfs/scrub/tempfile.h | 4 ----
 fs/xfs/xfs_buf_item.h   | 1 -
 fs/xfs/xfs_inode.h      | 1 -
 fs/xfs/xfs_log.h        | 2 --
 6 files changed, 10 deletions(-)

diff --git a/fs/xfs/scrub/common.h b/fs/xfs/scrub/common.h
index 9d627fd50687..f0f073a93413 100644
--- a/fs/xfs/scrub/common.h
+++ b/fs/xfs/scrub/common.h
@@ -74,7 +74,6 @@ int xchk_setup_ag_rmapbt(struct xfs_scrub *sc);
 int xchk_setup_ag_refcountbt(struct xfs_scrub *sc);
 int xchk_setup_inode(struct xfs_scrub *sc);
 int xchk_setup_inode_bmap(struct xfs_scrub *sc);
-int xchk_setup_inode_bmap_data(struct xfs_scrub *sc);
 int xchk_setup_directory(struct xfs_scrub *sc);
 int xchk_setup_xattr(struct xfs_scrub *sc);
 int xchk_setup_symlink(struct xfs_scrub *sc);
diff --git a/fs/xfs/scrub/scrub.h b/fs/xfs/scrub/scrub.h
index 6d7d3523b71f..737a5d6db15f 100644
--- a/fs/xfs/scrub/scrub.h
+++ b/fs/xfs/scrub/scrub.h
@@ -261,7 +261,6 @@ static inline int xchk_nothing(struct xfs_scrub *sc)
 }
 
 /* Metadata scrubbers */
-int xchk_tester(struct xfs_scrub *sc);
 int xchk_superblock(struct xfs_scrub *sc);
 int xchk_agf(struct xfs_scrub *sc);
 int xchk_agfl(struct xfs_scrub *sc);
diff --git a/fs/xfs/scrub/tempfile.h b/fs/xfs/scrub/tempfile.h
index 71c1b54599c3..d44ed43bafe0 100644
--- a/fs/xfs/scrub/tempfile.h
+++ b/fs/xfs/scrub/tempfile.h
@@ -39,10 +39,6 @@ int xrep_tempfile_roll_trans(struct xfs_scrub *sc);
 void xrep_tempfile_copyout_local(struct xfs_scrub *sc, int whichfork);
 bool xrep_is_tempfile(const struct xfs_inode *ip);
 #else
-static inline void xrep_tempfile_iolock_both(struct xfs_scrub *sc)
-{
-	xchk_ilock(sc, XFS_IOLOCK_EXCL);
-}
 # define xrep_is_tempfile(ip)		(false)
 # define xrep_tempfile_adjust_directory_tree(sc)	(0)
 # define xrep_tempfile_rele(sc)
diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h
index 3159325dd17b..28c79989d725 100644
--- a/fs/xfs/xfs_buf_item.h
+++ b/fs/xfs/xfs_buf_item.h
@@ -60,7 +60,6 @@ static inline void xfs_buf_dquot_iodone(struct xfs_buf *bp)
 {
 }
 #endif /* CONFIG_XFS_QUOTA */
-void	xfs_buf_iodone(struct xfs_buf *);
 bool	xfs_buf_log_check_iovec(struct kvec *iovec);
 
 unsigned int xfs_buf_inval_log_space(unsigned int map_count,
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 34c1038ebfcd..1602027cd0aa 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -585,7 +585,6 @@ uint		xfs_ilock_attr_map_shared(struct xfs_inode *);
 int		xfs_ifree(struct xfs_trans *, struct xfs_inode *);
 int		xfs_itruncate_extents_flags(struct xfs_trans **,
 				struct xfs_inode *, int, xfs_fsize_t, int);
-void		xfs_iext_realloc(xfs_inode_t *, int, int);
 
 int		xfs_log_force_inode(struct xfs_inode *ip);
 void		xfs_iunpin_wait(xfs_inode_t *);
diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h
index ca66429bf6c9..f715695e8fcb 100644
--- a/fs/xfs/xfs_log.h
+++ b/fs/xfs/xfs_log.h
@@ -105,8 +105,6 @@ int	  xfs_log_mount(struct xfs_mount	*mp,
 			int		 	num_bblocks);
 int	  xfs_log_mount_finish(struct xfs_mount *mp);
 void	xfs_log_mount_cancel(struct xfs_mount *);
-xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp);
-xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp);
 void	xfs_log_space_wake(struct xfs_mount *mp);
 int	xfs_log_reserve(struct xfs_mount *mp, int length, int count,
 			struct xlog_ticket **ticket, bool permanent);
-- 
2.52.0