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authorOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>2008-11-06 12:53:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-06 15:41:21 -0800
commit1c13a243a461dd5b089d29e5d57f260c990e462c (patch)
tree2d9e6be66c1854cdc172708357d95800ec8e93ed
parent1b52467243c7167b3a267ddbcbb14d550f28eb4a (diff)
downloadlinux-2.6.38-lt-ux500-1c13a243a461dd5b089d29e5d57f260c990e462c.tar.gz
fat: Kill d_invalidate() in vfat_lookup()
d_invalidate() for positive dentry doesn't work in some cases (vfsmount, nfsd, and maybe others). shrink_dcache_parent() by d_invalidate() is pointless for vfat usage at all. So, this kills it, and intead of it uses d_move(). To save old behavior, this returns alias simply for directory (don't change pwd, etc..). the directory lookup shouldn't be important for performance. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/fat/namei_vfat.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index d585398f9f6..bf326d4356a 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -745,13 +745,12 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
*
* Switch to new one for reason of locality if possible.
*/
- if (d_invalidate(alias) == 0)
- dput(alias);
- else {
- iput(inode);
- unlock_super(sb);
- return alias;
- }
+ BUG_ON(d_unhashed(alias));
+ if (!S_ISDIR(inode->i_mode))
+ d_move(alias, dentry);
+ iput(inode);
+ unlock_super(sb);
+ return alias;
}
out:
unlock_super(sb);