xfs: add more statics & drop some unused functions

A lot more functions could be made static, but they need
forward declarations; this does some easy ones, and also
found a few unused functions in the process.

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

23 files changed, 22 insertions, 159 deletions

diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index a220d36f789b..c709ed61a53e 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -687,7 +687,7 @@ xfs_barrier_test(
         return error;
 }
 
-void
+STATIC void
 xfs_mountfs_check_barriers(xfs_mount_t *mp)
 {
         int error;
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index 98ef624d9baf..320be6aea492 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -749,21 +749,6 @@ __xfs_inode_clear_reclaim_tag(
                         XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG);
 }
 
-void
-xfs_inode_clear_reclaim_tag(
-        xfs_inode_t     *ip)
-{
-        xfs_mount_t     *mp = ip->i_mount;
-        xfs_perag_t     *pag = xfs_get_perag(mp, ip->i_ino);
-
-        read_lock(&pag->pag_ici_lock);
-        spin_lock(&ip->i_flags_lock);
-        __xfs_inode_clear_reclaim_tag(mp, pag, ip);
-        spin_unlock(&ip->i_flags_lock);
-        read_unlock(&pag->pag_ici_lock);
-        xfs_put_perag(mp, pag);
-}
-
 STATIC int
 xfs_reclaim_inode_now(
         struct xfs_inode        *ip,
diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h
index 59120602588a..27920eb7a820 100644
--- a/fs/xfs/linux-2.6/xfs_sync.h
+++ b/fs/xfs/linux-2.6/xfs_sync.h
@@ -49,7 +49,6 @@ int xfs_reclaim_inodes(struct xfs_mount *mp, int mode);
 
 void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
 void __xfs_inode_set_reclaim_tag(struct xfs_perag *pag, struct xfs_inode *ip);
-void xfs_inode_clear_reclaim_tag(struct xfs_inode *ip);
 void __xfs_inode_clear_reclaim_tag(struct xfs_mount *mp, struct xfs_perag *pag,
                                 struct xfs_inode *ip);
 
diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h
index f24b50b68d03..af3cfeb18b0d 100644
--- a/fs/xfs/xfs_ag.h
+++ b/fs/xfs/xfs_ag.h
@@ -91,9 +91,6 @@ typedef struct xfs_agf {
 #define XFS_AGF_BLOCK(mp)       XFS_HDR_BLOCK(mp, XFS_AGF_DADDR(mp))
 #define XFS_BUF_TO_AGF(bp)      ((xfs_agf_t *)XFS_BUF_PTR(bp))
 
-extern int xfs_read_agf(struct xfs_mount *mp, struct xfs_trans *tp,
-                        xfs_agnumber_t agno, int flags, struct xfs_buf **bpp);
-
 /*
  * Size of the unlinked inode hash table in the agi.
  */
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index 2cf944eb796d..6316004922d7 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -2248,7 +2248,7 @@ xfs_alloc_put_freelist(
 /*
  * Read in the allocation group header (free/alloc section).
  */
-int                                     /* error */
+STATIC int                              /* error */
 xfs_read_agf(
         struct xfs_mount        *mp,    /* mount point structure */
         struct xfs_trans        *tp,    /* transaction pointer */
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 8ee5b5a76a2a..8971fb09d387 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -3713,7 +3713,7 @@ done:
  * entry (null if none).  Else, *lastxp will be set to the index
  * of the found entry; *gotp will contain the entry.
  */
-xfs_bmbt_rec_host_t *                   /* pointer to found extent entry */
+STATIC xfs_bmbt_rec_host_t *            /* pointer to found extent entry */
 xfs_bmap_search_multi_extents(
         xfs_ifork_t     *ifp,           /* inode fork pointer */
         xfs_fileoff_t   bno,            /* block number searched for */
diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h
index 1b8ff9256bd0..56f62d2edc35 100644
--- a/fs/xfs/xfs_bmap.h
+++ b/fs/xfs/xfs_bmap.h
@@ -392,17 +392,6 @@ xfs_bmap_count_blocks(
         int                     whichfork,
         int                     *count);
 
-/*
- * Search the extent records for the entry containing block bno.
- * If bno lies in a hole, point to the next entry.  If bno lies
- * past eof, *eofp will be set, and *prevp will contain the last
- * entry (null if none).  Else, *lastxp will be set to the index
- * of the found entry; *gotp will contain the entry.
- */
-xfs_bmbt_rec_host_t *
-xfs_bmap_search_multi_extents(struct xfs_ifork *, xfs_fileoff_t, int *,
-                        xfs_extnum_t *, xfs_bmbt_irec_t *, xfs_bmbt_irec_t *);
-
 #endif  /* __KERNEL__ */
 
 #endif  /* __XFS_BMAP_H__ */
diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c
index 5c1ade06578e..eb7b702d0690 100644
--- a/fs/xfs/xfs_bmap_btree.c
+++ b/fs/xfs/xfs_bmap_btree.c
@@ -202,16 +202,6 @@ xfs_bmbt_get_state(
                                 ext_flag);
 }
 
-/* Endian flipping versions of the bmbt extraction functions */
-void
-xfs_bmbt_disk_get_all(
-        xfs_bmbt_rec_t  *r,
-        xfs_bmbt_irec_t *s)
-{
-        __xfs_bmbt_get_all(get_unaligned_be64(&r->l0),
-                                get_unaligned_be64(&r->l1), s);
-}
-
 /*
  * Extract the blockcount field from an on disk bmap extent record.
  */
@@ -816,6 +806,16 @@ xfs_bmbt_trace_key(
         *l1 = 0;
 }
 
+/* Endian flipping versions of the bmbt extraction functions */
+STATIC void
+xfs_bmbt_disk_get_all(
+        xfs_bmbt_rec_t  *r,
+        xfs_bmbt_irec_t *s)
+{
+        __xfs_bmbt_get_all(get_unaligned_be64(&r->l0),
+                                get_unaligned_be64(&r->l1), s);
+}
+
 STATIC void
 xfs_bmbt_trace_record(
         struct xfs_btree_cur    *cur,
diff --git a/fs/xfs/xfs_bmap_btree.h b/fs/xfs/xfs_bmap_btree.h
index 0e8df007615e..5549d495947f 100644
--- a/fs/xfs/xfs_bmap_btree.h
+++ b/fs/xfs/xfs_bmap_btree.h
@@ -220,7 +220,6 @@ extern xfs_fsblock_t xfs_bmbt_get_startblock(xfs_bmbt_rec_host_t *r);
 extern xfs_fileoff_t xfs_bmbt_get_startoff(xfs_bmbt_rec_host_t *r);
 extern xfs_exntst_t xfs_bmbt_get_state(xfs_bmbt_rec_host_t *r);
 
-extern void xfs_bmbt_disk_get_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s);
 extern xfs_filblks_t xfs_bmbt_disk_get_blockcount(xfs_bmbt_rec_t *r);
 extern xfs_fileoff_t xfs_bmbt_disk_get_startoff(xfs_bmbt_rec_t *r);
 
diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c
index 26717388acf5..52b5f14d0c32 100644
--- a/fs/xfs/xfs_btree.c
+++ b/fs/xfs/xfs_btree.c
@@ -646,46 +646,6 @@ xfs_btree_read_bufl(
 }
 
 /*
- * Get a buffer for the block, return it read in.
- * Short-form addressing.
- */
-int                                     /* error */
-xfs_btree_read_bufs(
-        xfs_mount_t     *mp,            /* file system mount point */
-        xfs_trans_t     *tp,            /* transaction pointer */
-        xfs_agnumber_t  agno,           /* allocation group number */
-        xfs_agblock_t   agbno,          /* allocation group block number */
-        uint            lock,           /* lock flags for read_buf */
-        xfs_buf_t       **bpp,          /* buffer for agno/agbno */
-        int             refval)         /* ref count value for buffer */
-{
-        xfs_buf_t       *bp;            /* return value */
-        xfs_daddr_t     d;              /* real disk block address */
-        int             error;
-
-        ASSERT(agno != NULLAGNUMBER);
-        ASSERT(agbno != NULLAGBLOCK);
-        d = XFS_AGB_TO_DADDR(mp, agno, agbno);
-        if ((error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, d,
-                                        mp->m_bsize, lock, &bp))) {
-                return error;
-        }
-        ASSERT(!bp || !XFS_BUF_GETERROR(bp));
-        if (bp != NULL) {
-                switch (refval) {
-                case XFS_ALLOC_BTREE_REF:
-                        XFS_BUF_SET_VTYPE_REF(bp, B_FS_MAP, refval);
-                        break;
-                case XFS_INO_BTREE_REF:
-                        XFS_BUF_SET_VTYPE_REF(bp, B_FS_INOMAP, refval);
-                        break;
-                }
-        }
-        *bpp = bp;
-        return 0;
-}
-
-/*
  * Read-ahead the block, don't wait for it, don't return a buffer.
  * Long-form addressing.
  */
@@ -2951,7 +2911,7 @@ error0:
  * inode we have to copy the single block it was pointing to into the
  * inode.
  */
-int
+STATIC int
 xfs_btree_kill_iroot(
         struct xfs_btree_cur    *cur)
 {
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index 4f852b735b96..7fa07062bdda 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -379,20 +379,6 @@ xfs_btree_read_bufl(
         int                     refval);/* ref count value for buffer */
 
 /*
- * Get a buffer for the block, return it read in.
- * Short-form addressing.
- */
-int                                     /* error */
-xfs_btree_read_bufs(
-        struct xfs_mount        *mp,    /* file system mount point */
-        struct xfs_trans        *tp,    /* transaction pointer */
-        xfs_agnumber_t          agno,   /* allocation group number */
-        xfs_agblock_t           agbno,  /* allocation group block number */
-        uint                    lock,   /* lock flags for read_buf */
-        struct xfs_buf          **bpp,  /* buffer for agno/agbno */
-        int                     refval);/* ref count value for buffer */
-
-/*
  * Read-ahead the block, don't wait for it, don't return a buffer.
  * Long-form addressing.
  */
@@ -432,7 +418,6 @@ int xfs_btree_decrement(struct xfs_btree_cur *, int, int *);
 int xfs_btree_lookup(struct xfs_btree_cur *, xfs_lookup_t, int *);
 int xfs_btree_update(struct xfs_btree_cur *, union xfs_btree_rec *);
 int xfs_btree_new_iroot(struct xfs_btree_cur *, int *, int *);
-int xfs_btree_kill_iroot(struct xfs_btree_cur *);
 int xfs_btree_insert(struct xfs_btree_cur *, int *);
 int xfs_btree_delete(struct xfs_btree_cur *, int *);
 int xfs_btree_get_rec(struct xfs_btree_cur *, union xfs_btree_rec **, int *);
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index da428b3fe0f5..c1dc7ef5a1d8 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -651,7 +651,7 @@ xfs_iformat_btree(
         return 0;
 }
 
-void
+STATIC void
 xfs_dinode_from_disk(
         xfs_icdinode_t          *to,
         xfs_dinode_t            *from)
@@ -1247,7 +1247,7 @@ xfs_isize_check(
  * In that case the pages will still be in memory, but the inode size
  * will never have been updated.
  */
-xfs_fsize_t
+STATIC xfs_fsize_t
 xfs_file_last_byte(
         xfs_inode_t     *ip)
 {
@@ -3837,7 +3837,7 @@ xfs_iext_inline_to_direct(
 /*
  * Resize an extent indirection array to new_size bytes.
  */
-void
+STATIC void
 xfs_iext_realloc_indirect(
         xfs_ifork_t     *ifp,           /* inode fork pointer */
         int             new_size)       /* new indirection array size */
@@ -3862,7 +3862,7 @@ xfs_iext_realloc_indirect(
 /*
  * Switch from indirection array to linear (direct) extent allocations.
  */
-void
+STATIC void
 xfs_iext_indirect_to_direct(
          xfs_ifork_t    *ifp)           /* inode fork pointer */
 {
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 65f24a3cc992..00e8505bde2d 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -504,7 +504,6 @@ void		xfs_ipin(xfs_inode_t *);
 void            xfs_iunpin(xfs_inode_t *);
 int             xfs_iflush(xfs_inode_t *, uint);
 void            xfs_ichgtime(xfs_inode_t *, int);
-xfs_fsize_t     xfs_file_last_byte(xfs_inode_t *);
 void            xfs_lock_inodes(xfs_inode_t **, int, uint);
 void            xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint);
 
@@ -572,8 +571,6 @@ int		xfs_itobp(struct xfs_mount *, struct xfs_trans *,
                           struct xfs_buf **, uint);
 int             xfs_iread(struct xfs_mount *, struct xfs_trans *,
                           struct xfs_inode *, xfs_daddr_t, uint);
-void            xfs_dinode_from_disk(struct xfs_icdinode *,
-                                     struct xfs_dinode *);
 void            xfs_dinode_to_disk(struct xfs_dinode *,
                                    struct xfs_icdinode *);
 void            xfs_idestroy_fork(struct xfs_inode *, int);
@@ -592,8 +589,6 @@ void		xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
 void            xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
 void            xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);
 void            xfs_iext_realloc_direct(xfs_ifork_t *, int);
-void            xfs_iext_realloc_indirect(xfs_ifork_t *, int);
-void            xfs_iext_indirect_to_direct(xfs_ifork_t *);
 void            xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t);
 void            xfs_iext_inline_to_direct(xfs_ifork_t *, int);
 void            xfs_iext_destroy(xfs_ifork_t *);
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index aeb2d2221c7d..c471122d2234 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -39,7 +39,7 @@
 #include "xfs_error.h"
 #include "xfs_btree.h"
 
-int
+STATIC int
 xfs_internal_inum(
         xfs_mount_t     *mp,
         xfs_ino_t       ino)
diff --git a/fs/xfs/xfs_itable.h b/fs/xfs/xfs_itable.h
index 1fb04e7deb61..20792bf45946 100644
--- a/fs/xfs/xfs_itable.h
+++ b/fs/xfs/xfs_itable.h
@@ -99,11 +99,6 @@ xfs_bulkstat_one(
         void                    *dibuff,
         int                     *stat);
 
-int
-xfs_internal_inum(
-        xfs_mount_t             *mp,
-        xfs_ino_t               ino);
-
 typedef int (*inumbers_fmt_pf)(
         void                    __user *ubuffer, /* buffer to write to */
         const xfs_inogrp_t      *buffer,        /* buffer to read from */
diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h
index bcad5f4c1fd1..679c7c4926a2 100644
--- a/fs/xfs/xfs_log_priv.h
+++ b/fs/xfs/xfs_log_priv.h
@@ -451,8 +451,6 @@ extern int	 xlog_find_tail(xlog_t	*log,
 extern int       xlog_recover(xlog_t *log);
 extern int       xlog_recover_finish(xlog_t *log);
 extern void      xlog_pack_data(xlog_t *log, xlog_in_core_t *iclog, int);
-extern void      xlog_recover_process_iunlinks(xlog_t *log);
-
 extern struct xfs_buf *xlog_get_bp(xlog_t *, int);
 extern void      xlog_put_bp(struct xfs_buf *);
 
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 47da2fb45377..1099395d7d6c 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -3263,7 +3263,7 @@ xlog_recover_process_one_iunlink(
  * freeing of the inode and its removal from the list must be
  * atomic.
  */
-void
+STATIC void
 xlog_recover_process_iunlinks(
         xlog_t          *log)
 {
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 5c6f092659c1..8b6c9e807efb 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -1568,7 +1568,7 @@ xfs_mod_sb(xfs_trans_t *tp, __int64_t fields)
  *
  * The m_sb_lock must be held when this routine is called.
  */
-int
+STATIC int
 xfs_mod_incore_sb_unlocked(
         xfs_mount_t     *mp,
         xfs_sb_field_t  field,
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index a5122382afde..a6c023bc0fb2 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -414,13 +414,10 @@ typedef struct xfs_mod_sb {
 
 extern int      xfs_log_sbcount(xfs_mount_t *, uint);
 extern int      xfs_mountfs(xfs_mount_t *mp);
-extern void     xfs_mountfs_check_barriers(xfs_mount_t *mp);
 
 extern void     xfs_unmountfs(xfs_mount_t *);
 extern int      xfs_unmountfs_writesb(xfs_mount_t *);
 extern int      xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
-extern int      xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
-                        int64_t, int);
 extern int      xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
                         uint, int);
 extern int      xfs_mount_log_sb(xfs_mount_t *, __int64_t);
diff --git a/fs/xfs/xfs_mru_cache.c b/fs/xfs/xfs_mru_cache.c
index afee7eb24323..4b0613d99faa 100644
--- a/fs/xfs/xfs_mru_cache.c
+++ b/fs/xfs/xfs_mru_cache.c
@@ -564,35 +564,6 @@ xfs_mru_cache_lookup(
 }
 
 /*
- * To look up an element using its key, but leave its location in the internal
- * lists alone, call xfs_mru_cache_peek().  If the element isn't found, this
- * function returns NULL.
- *
- * See the comments above the declaration of the xfs_mru_cache_lookup() function
- * for important locking information pertaining to this call.
- */
-void *
-xfs_mru_cache_peek(
-        xfs_mru_cache_t *mru,
-        unsigned long   key)
-{
-        xfs_mru_cache_elem_t *elem;
-
-        ASSERT(mru && mru->lists);
-        if (!mru || !mru->lists)
-                return NULL;
-
-        spin_lock(&mru->lock);
-        elem = radix_tree_lookup(&mru->store, key);
-        if (!elem)
-                spin_unlock(&mru->lock);
-        else
-                __release(mru_lock); /* help sparse not be stupid */
-
-        return elem ? elem->value : NULL;
-}
-
-/*
  * To release the internal data structure spinlock after having performed an
  * xfs_mru_cache_lookup() or an xfs_mru_cache_peek(), call xfs_mru_cache_done()
  * with the data store pointer.
diff --git a/fs/xfs/xfs_mru_cache.h b/fs/xfs/xfs_mru_cache.h
index dd58ea1bbebe..5d439f34b0c9 100644
--- a/fs/xfs/xfs_mru_cache.h
+++ b/fs/xfs/xfs_mru_cache.h
@@ -49,7 +49,6 @@ int xfs_mru_cache_insert(struct xfs_mru_cache *mru, unsigned long key,
 void * xfs_mru_cache_remove(struct xfs_mru_cache *mru, unsigned long key);
 void xfs_mru_cache_delete(struct xfs_mru_cache *mru, unsigned long key);
 void *xfs_mru_cache_lookup(struct xfs_mru_cache *mru, unsigned long key);
-void *xfs_mru_cache_peek(struct xfs_mru_cache *mru, unsigned long key);
 void xfs_mru_cache_done(struct xfs_mru_cache *mru);
 
 #endif /* __XFS_MRU_CACHE_H__ */
diff --git a/fs/xfs/xfs_rw.h b/fs/xfs/xfs_rw.h
index f76c003ec55d..ae65f0df87da 100644
--- a/fs/xfs/xfs_rw.h
+++ b/fs/xfs/xfs_rw.h
@@ -78,10 +78,4 @@ extern int xfs_read_buf(struct xfs_mount *mp, xfs_buftarg_t *btp,
 extern void xfs_ioerror_alert(char *func, struct xfs_mount *mp,
                                 xfs_buf_t *bp, xfs_daddr_t blkno);
 
-/*
- * Prototypes for functions in xfs_vnodeops.c.
- */
-extern int xfs_free_eofblocks(struct xfs_mount *mp, struct xfs_inode *ip,
-                        int flags);
-
 #endif /* __XFS_RW_H__ */
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 492d75bae2bf..ceecafd1f9c1 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -718,7 +718,7 @@ xfs_fsync(
  * when the link count isn't zero and by xfs_dm_punch_hole() when
  * punching a hole to EOF.
  */
-int
+STATIC int
 xfs_free_eofblocks(
         xfs_mount_t     *mp,
         xfs_inode_t     *ip,