mm: optimize acorn partition truncate

invalidate_bdev() is superfluous when truncate_inode_pages() is also
called.  do call invalidate_bh_lrus() though, to avoid stale pointers.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/partitions/acorn.c b/fs/partitions/acorn.c
index 9a6826c63818..e3491328596b 100644
--- a/fs/partitions/acorn.c
+++ b/fs/partitions/acorn.c
@@ -271,7 +271,7 @@ adfspart_check_ADFS(struct parsed_partitions *state, struct block_device *bdev)
                 extern void xd_set_geometry(struct block_device *,
                         unsigned char, unsigned char, unsigned int);
                 xd_set_geometry(bdev, dr->secspertrack, heads, 1);
-                invalidate_bdev(bdev);
+                invalidate_bh_lrus();
                 truncate_inode_pages(bdev->bd_inode->i_mapping, 0);
         }
 #endif