From: Arnd Bergmann <arnd@arndb.de>
To: Paul Mackerras <paulus@samba.org>
Cc: linuxppc64-dev@ozlabs.org, linux-kernel@vger.kernel.org,
Al Viro <viro@ftp.linux.org.uk>, Mark Nutter <mnutter@us.ibm.com>,
Arnd Bergmann <arndb@de.ibm.com>
Subject: [PATCH 07/13] spufs: fix spufs_fill_dir error path
Date: Wed, 04 Jan 2006 20:31:27 +0100 [thread overview]
Message-ID: <20060104194501.210484000@localhost> (raw)
In-Reply-To: 20060104193120.050539000@localhost
[-- Attachment #1: spufs-fill-dir-leak.diff --]
[-- Type: text/plain, Size: 3016 bytes --]
If creating one entry failed in spufs_fill_dir,
we never cleaned up the freshly created entries.
Fix this by calling the cleanup function on error.
Noticed by Al Viro.
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Index: linux-2.6.15-rc/arch/powerpc/platforms/cell/spufs/inode.c
===================================================================
--- linux-2.6.15-rc.orig/arch/powerpc/platforms/cell/spufs/inode.c
+++ linux-2.6.15-rc/arch/powerpc/platforms/cell/spufs/inode.c
@@ -134,47 +134,18 @@ spufs_delete_inode(struct inode *inode)
clear_inode(inode);
}
-static int
-spufs_fill_dir(struct dentry *dir, struct tree_descr *files,
- int mode, struct spu_context *ctx)
-{
- struct dentry *dentry;
- int ret;
-
- while (files->name && files->name[0]) {
- ret = -ENOMEM;
- dentry = d_alloc_name(dir, files->name);
- if (!dentry)
- goto out;
- ret = spufs_new_file(dir->d_sb, dentry, files->ops,
- files->mode & mode, ctx);
- if (ret)
- goto out;
- files++;
- }
- return 0;
-out:
- // FIXME: remove all files that are left
-
- return ret;
-}
-
-static int spufs_rmdir(struct inode *root, struct dentry *dir_dentry)
+static void spufs_prune_dir(struct dentry *dir)
{
struct dentry *dentry, *tmp;
- struct spu_context *ctx;
-
- /* remove all entries */
- down(&root->i_sem);
- down(&dir_dentry->d_inode->i_sem);
- list_for_each_entry_safe(dentry, tmp, &dir_dentry->d_subdirs, d_child) {
+ down(&dir->d_inode->i_sem);
+ list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_child) {
spin_lock(&dcache_lock);
spin_lock(&dentry->d_lock);
if (!(d_unhashed(dentry)) && dentry->d_inode) {
dget_locked(dentry);
__d_drop(dentry);
spin_unlock(&dentry->d_lock);
- simple_unlink(dir_dentry->d_inode, dentry);
+ simple_unlink(dir->d_inode, dentry);
spin_unlock(&dcache_lock);
dput(dentry);
} else {
@@ -182,8 +153,17 @@ static int spufs_rmdir(struct inode *roo
spin_unlock(&dcache_lock);
}
}
- shrink_dcache_parent(dir_dentry);
- up(&dir_dentry->d_inode->i_sem);
+ shrink_dcache_parent(dir);
+ up(&dir->d_inode->i_sem);
+}
+
+static int spufs_rmdir(struct inode *root, struct dentry *dir_dentry)
+{
+ struct spu_context *ctx;
+
+ /* remove all entries */
+ down(&root->i_sem);
+ spufs_prune_dir(dir_dentry);
up(&root->i_sem);
/* We have to give up the mm_struct */
@@ -194,6 +174,29 @@ static int spufs_rmdir(struct inode *roo
return simple_rmdir(root, dir_dentry);
}
+static int spufs_fill_dir(struct dentry *dir, struct tree_descr *files,
+ int mode, struct spu_context *ctx)
+{
+ struct dentry *dentry;
+ int ret;
+
+ while (files->name && files->name[0]) {
+ ret = -ENOMEM;
+ dentry = d_alloc_name(dir, files->name);
+ if (!dentry)
+ goto out;
+ ret = spufs_new_file(dir->d_sb, dentry, files->ops,
+ files->mode & mode, ctx);
+ if (ret)
+ goto out;
+ files++;
+ }
+ return 0;
+out:
+ spufs_prune_dir(dir);
+ return ret;
+}
+
static int spufs_dir_close(struct inode *inode, struct file *file)
{
struct inode *dir;
--
next prev parent reply other threads:[~2006-01-04 19:58 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-04 19:31 [PATCH 00/13] spufs fixes and cleanups Arnd Bergmann
2006-01-04 19:31 ` [PATCH 01/13] spufs: fix locking in spu_acquire_runnable Arnd Bergmann
2006-01-04 19:31 ` [PATCH 02/13] spufs: dont hold root->isem in spu_forget Arnd Bergmann
2006-01-04 19:31 ` [PATCH 03/13] spufs: check for proper file pointer in sys_spu_run Arnd Bergmann
2006-01-04 19:31 ` [PATCH 04/13] spufs: serialize sys_spu_run per spu Arnd Bergmann
2006-01-04 19:31 ` [PATCH 05/13] spufs fix spu_acquire_runnable error path Arnd Bergmann
2006-01-04 19:31 ` [PATCH 06/13] spufs: dont leak directories in failed spu_create Arnd Bergmann
2006-01-04 19:31 ` Arnd Bergmann [this message]
2006-01-04 19:31 ` [PATCH 08/13] spufs: clean up use of bitops Arnd Bergmann
2006-01-04 19:31 ` [PATCH 09/13] spufs: move spu_run call to its own file Arnd Bergmann
2006-01-04 19:31 ` [PATCH 10/13] spufs: abstract priv1 register access Arnd Bergmann
2006-01-04 19:31 ` [PATCH 11/13] spufs: fix sparse warnings Arnd Bergmann
2006-01-04 19:31 ` [PATCH 12/13] spufs: fix allocation on 64k pages Arnd Bergmann
2006-01-04 19:31 ` [PATCH 13/13] spufs: set irq affinity for running threads Arnd Bergmann
2006-01-05 4:42 ` Nathan Lynch
2006-01-05 14:05 ` Arnd Bergmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20060104194501.210484000@localhost \
--to=arnd@arndb.de \
--cc=arndb@de.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc64-dev@ozlabs.org \
--cc=mnutter@us.ibm.com \
--cc=paulus@samba.org \
--cc=viro@ftp.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.