xfs: Kill filestreams cache flush

The filestreams cache flush is not needed in the sync code as it
does not affect data writeback, and it is now not used by the growfs
code, either, so kill it.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

5 files changed, 1 insertions, 20 deletions

diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index cc964faf12e9..b58f8412dfe2 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -451,9 +451,6 @@ xfs_quiesce_data(
         xfs_sync_data(mp, SYNC_WAIT);
         xfs_qm_sync(mp, SYNC_WAIT);
 
-        /* drop inode references pinned by filestreams */
-        xfs_filestream_flush(mp);
-
         /* write superblock and hoover up shutdown errors */
         error = xfs_sync_fsdata(mp, SYNC_WAIT);
 
diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c
index 914d00d0f119..390850ee6603 100644
--- a/fs/xfs/xfs_filestream.c
+++ b/fs/xfs/xfs_filestream.c
@@ -455,20 +455,6 @@ xfs_filestream_unmount(
 }
 
 /*
- * If the mount point's m_perag tree is going to be modified, all
- * outstanding cache entries must be flushed to avoid accessing reference count
- * addresses that have been freed.  The call to xfs_filestream_flush() must be
- * made inside the block that holds the m_perag_lock in write mode to do the
- * reallocation.
- */
-void
-xfs_filestream_flush(
-        xfs_mount_t     *mp)
-{
-        xfs_mru_cache_flush(mp->m_filestream);
-}
-
-/*
  * Return the AG of the filestream the file or directory belongs to, or
  * NULLAGNUMBER otherwise.
  */
diff --git a/fs/xfs/xfs_filestream.h b/fs/xfs/xfs_filestream.h
index 58378b2ea033..260f757bbc5d 100644
--- a/fs/xfs/xfs_filestream.h
+++ b/fs/xfs/xfs_filestream.h
@@ -135,7 +135,6 @@ int xfs_filestream_init(void);
 void xfs_filestream_uninit(void);
 int xfs_filestream_mount(struct xfs_mount *mp);
 void xfs_filestream_unmount(struct xfs_mount *mp);
-void xfs_filestream_flush(struct xfs_mount *mp);
 xfs_agnumber_t xfs_filestream_lookup_ag(struct xfs_inode *ip);
 int xfs_filestream_associate(struct xfs_inode *dip, struct xfs_inode *ip);
 void xfs_filestream_deassociate(struct xfs_inode *ip);
diff --git a/fs/xfs/xfs_mru_cache.c b/fs/xfs/xfs_mru_cache.c
index 4b0613d99faa..45ce15dc5b2b 100644
--- a/fs/xfs/xfs_mru_cache.c
+++ b/fs/xfs/xfs_mru_cache.c
@@ -398,7 +398,7 @@ exit:
  * guaranteed that all the free functions for all the elements have finished
  * executing and the reaper is not running.
  */
-void
+static void
 xfs_mru_cache_flush(
         xfs_mru_cache_t         *mru)
 {
diff --git a/fs/xfs/xfs_mru_cache.h b/fs/xfs/xfs_mru_cache.h
index 5d439f34b0c9..36dd3ec8b4eb 100644
--- a/fs/xfs/xfs_mru_cache.h
+++ b/fs/xfs/xfs_mru_cache.h
@@ -42,7 +42,6 @@ void xfs_mru_cache_uninit(void);
 int xfs_mru_cache_create(struct xfs_mru_cache **mrup, unsigned int lifetime_ms,
                              unsigned int grp_count,
                              xfs_mru_cache_free_func_t free_func);
-void xfs_mru_cache_flush(xfs_mru_cache_t *mru);
 void xfs_mru_cache_destroy(struct xfs_mru_cache *mru);
 int xfs_mru_cache_insert(struct xfs_mru_cache *mru, unsigned long key,
                                 void *value);