From: NeilBrown <neilb@suse.de>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 08/10] VFS: tiny optimisation in open_other handling.
Date: Mon, 06 Sep 2010 10:50:29 +1000 [thread overview]
Message-ID: <20100906005029.20775.19530.stgit@localhost.localdomain> (raw)
In-Reply-To: <20100906004829.20775.68828.stgit@localhost.localdomain>
If IS_ERR(ret), then ret != NULL, so if we are performing the second
test we don't need the first.
Signed-off-by: NeilBrown <neilb@suse.de>
---
fs/open.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/open.c b/fs/open.c
index 89e4f34..b986ca1 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -687,7 +687,7 @@ static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt,
if (!open && f->f_op && f->f_op->open_other) {
/* NULL means keep f, non-error non-null means replace */
ret = f->f_op->open_other(f);
- if (IS_ERR(ret) || ret != NULL)
+ if (ret)
goto cleanup_all;
} else {
if (!open && f->f_op)
next prev parent reply other threads:[~2010-09-06 0:52 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-06 0:50 [PATCH 00/10] Assorted fixes/enhancements for overlayfs NeilBrown
2010-09-06 0:50 ` [PATCH 02/10] ovl: minimal remount support NeilBrown
2010-09-06 0:50 ` [PATCH 01/10] ovl: small optimisation for ovl_lookup NeilBrown
2010-09-06 16:57 ` Miklos Szeredi
2010-09-06 0:50 ` [PATCH 03/10] ovl: use correct seek function for directories NeilBrown
2010-09-06 0:50 ` [PATCH 07/10] ovl: add initial revalidate support NeilBrown
2010-09-16 14:47 ` Miklos Szeredi
2010-09-21 2:40 ` Neil Brown
2010-09-06 0:50 ` [PATCH 09/10] VFS: Remove read-only checks from dentry_permission NeilBrown
2010-09-06 19:10 ` Miklos Szeredi
2010-09-08 7:47 ` Neil Brown
2010-09-08 8:58 ` Miklos Szeredi
2010-09-07 15:58 ` Dave Hansen
2010-09-06 0:50 ` [PATCH 05/10] ovl: make sure fsync is never called on the lower filesystem NeilBrown
2010-09-06 17:16 ` Miklos Szeredi
2010-09-06 0:50 ` NeilBrown [this message]
2010-09-06 0:50 ` [PATCH 06/10] ovl: rename ovl_fill_cache to ovl_dir_read NeilBrown
2010-09-06 0:50 ` [PATCH 10/10] ovl: Assorted updates to Documentation/filesystems/overlayfs.txt NeilBrown
2010-09-06 0:50 ` [PATCH 04/10] ovl: initialise is_real before use NeilBrown
2010-09-06 19:23 ` [PATCH 00/10] Assorted fixes/enhancements for overlayfs Miklos Szeredi
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