The patch titled
iget: stop OPENPROMFS from using iget() and read_inode()
has been removed from the -mm tree. Its filename was
iget-stop-openpromfs-from-using-iget-and.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: iget: stop OPENPROMFS from using iget() and read_inode()
From: David Howells <dhowells@xxxxxxxxxx>
Stop the OPENPROMFS filesystem from using iget() and read_inode(). Replace
openpromfs_read_inode() with openpromfs_iget(), and call that instead of
iget(). openpromfs_iget() then uses iget_locked() directly and returns a
proper error code instead of an inode in the event of an error.
openpromfs_fill_super() returns any error incurred when getting the root inode
instead of ENOMEM (not that it currently incurs any other error).
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Acked-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/openpromfs/inode.c | 45 ++++++++++++++++++++++++++--------------
1 file changed, 30 insertions(+), 15 deletions(-)
diff -puN fs/openpromfs/inode.c~iget-stop-openpromfs-from-using-iget-and fs/openpromfs/inode.c
--- a/fs/openpromfs/inode.c~iget-stop-openpromfs-from-using-iget-and
+++ a/fs/openpromfs/inode.c
@@ -38,6 +38,8 @@ struct op_inode_info {
union op_inode_data u;
};
+static struct inode *openprom_iget(struct super_block *sb, ino_t ino);
+
static inline struct op_inode_info *OP_I(struct inode *inode)
{
return container_of(inode, struct op_inode_info, vfs_inode);
@@ -226,10 +228,10 @@ static struct dentry *openpromfs_lookup(
return ERR_PTR(-ENOENT);
found:
- inode = iget(dir->i_sb, ino);
+ inode = openprom_iget(dir->i_sb, ino);
mutex_unlock(&op_mutex);
- if (!inode)
- return ERR_PTR(-EINVAL);
+ if (IS_ERR(inode))
+ return ERR_CAST(inode);
ent_oi = OP_I(inode);
ent_oi->type = ent_type;
ent_oi->u = ent_data;
@@ -348,14 +350,23 @@ static void openprom_destroy_inode(struc
kmem_cache_free(op_inode_cachep, OP_I(inode));
}
-static void openprom_read_inode(struct inode * inode)
+static struct inode *openprom_iget(struct super_block *sb, ino_t ino)
{
- inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
- if (inode->i_ino == OPENPROM_ROOT_INO) {
- inode->i_op = &openprom_inode_operations;
- inode->i_fop = &openprom_operations;
- inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
+ struct inode *inode;
+
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (inode->i_state & I_NEW) {
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+ if (inode->i_ino == OPENPROM_ROOT_INO) {
+ inode->i_op = &openprom_inode_operations;
+ inode->i_fop = &openprom_operations;
+ inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
+ }
+ unlock_new_inode(inode);
}
+ return inode;
}
static int openprom_remount(struct super_block *sb, int *flags, char *data)
@@ -367,7 +378,6 @@ static int openprom_remount(struct super
static const struct super_operations openprom_sops = {
.alloc_inode = openprom_alloc_inode,
.destroy_inode = openprom_destroy_inode,
- .read_inode = openprom_read_inode,
.statfs = simple_statfs,
.remount_fs = openprom_remount,
};
@@ -376,6 +386,7 @@ static int openprom_fill_super(struct su
{
struct inode *root_inode;
struct op_inode_info *oi;
+ int ret;
s->s_flags |= MS_NOATIME;
s->s_blocksize = 1024;
@@ -383,9 +394,11 @@ static int openprom_fill_super(struct su
s->s_magic = OPENPROM_SUPER_MAGIC;
s->s_op = &openprom_sops;
s->s_time_gran = 1;
- root_inode = iget(s, OPENPROM_ROOT_INO);
- if (!root_inode)
+ root_inode = openprom_iget(s, OPENPROM_ROOT_INO);
+ if (IS_ERR(root_inode)) {
+ ret = PTR_ERR(root_inode);
goto out_no_root;
+ }
oi = OP_I(root_inode);
oi->type = op_inode_node;
@@ -393,13 +406,15 @@ static int openprom_fill_super(struct su
s->s_root = d_alloc_root(root_inode);
if (!s->s_root)
- goto out_no_root;
+ goto out_no_root_dentry;
return 0;
+out_no_root_dentry:
+ iput(root_inode);
+ ret = -ENOMEM;
out_no_root:
printk("openprom_fill_super: get root inode failed\n");
- iput(root_inode);
- return -ENOMEM;
+ return ret;
}
static int openprom_get_sb(struct file_system_type *fs_type,
_
Patches currently in -mm which might be from dhowells@xxxxxxxxxx are
origin.patch
iget-stop-unionfs-from-using-iget-and-read_inode.patch
iget-stop-unionfs-from-using-iget-and-read_inode-fix-2.patch
use-path_put-in-a-few-places-instead-of-mntdput.patch
tty-let-architectures-override-the-user-kernel-macros.patch
aout-move-stack_top-to-asm-processorh.patch
aout-mark-arches-that-support-aout-format.patch
aout-suppress-aout-library-support-if-config_arch_supports_aout.patch
aout-suppress-aout-library-support-if-config_arch_supports_aout-uml-re-remove-accidentally-restored-code.patch
aout-remove-unnecessary-inclusions-of-asm-linux-aouth.patch
aout-remove-unnecessary-inclusions-of-asm-linux-aouth-alpha-fix.patch
usb-net2280-cant-have-a-function-called-show_registers.patch
mn10300-allocate-serial-port-uart-ids-for-on-chip-serial-ports.patch
mn10300-add-the-mn10300-am33-architecture-to-the-kernel.patch
mn10300-add-the-mn10300-am33-architecture-to-the-kernel-fix.patch
mn10300-add-platform-mtd-support-for-the-asb2303-board.patch
fs-afs-securityc-fix-uninitialized-var-warning.patch
procfs-constify-function-pointer-tables.patch
avoid-overflows-in-kernel-timec.patch
mount-options-fix-afs.patch
remove-aout-interpreter-support-in-elf-loader.patch
procfs-task-exe-symlink.patch
procfs-task-exe-symlink-fix.patch
mutex-subsystem-synchro-test-module.patch
-
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