From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Sun, 6 May 2007 21:49:55 +0000 (-0700)
Subject: mm: optimize acorn partition truncate
X-Git-Tag: v2.6.22-rc1~945
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=96018fdacbfcaf6a0694d066b525f67c24025688;p=linux-2.6

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>
---

diff --git a/fs/partitions/acorn.c b/fs/partitions/acorn.c
index 9a6826c638..e349132859 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