The patch titled
iget: stop OPENPROMFS from using iget() and read_inode()
has been added to the -mm tree. Its filename is
iget-stop-openpromfs-from-using-iget-and.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
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>
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
64-bit-i_version-afs-fixes.patch
add-an-err_cast-function-to-complement-err_ptr-and-co.patch
convert-err_ptrptr_errp-instances-to-err_castp.patch
iget-introduce-a-function-to-register-iget-failure.patch
iget-use-iget_failed-in-afs.patch
iget-use-iget_failed-in-gfs2.patch
iget-stop-affs-from-using-iget-and-read_inode-try.patch
iget-stop-affs-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-autofs-from-using-iget-and-read_inode.patch
iget-stop-befs-from-using-iget-and-read_inode-try.patch
iget-stop-bfs-from-using-iget-and-read_inode-try.patch
iget-stop-cifs-from-using-iget-and-read_inode-try.patch
iget-stop-efs-from-using-iget-and-read_inode-try.patch
iget-stop-efs-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-ext2-from-using-iget-and-read_inode-try.patch
iget-stop-ext2-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-ext3-from-using-iget-and-read_inode-try.patch
iget-stop-ext3-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-ext4-from-using-iget-and-read_inode-try.patch
iget-stop-fat-from-using-iget-and-read_inode-try.patch
iget-stop-freevxfs-from-using-iget-and-read_inode.patch
iget-stop-freevxfs-from-using-iget-and-read_inode-checkpatch-fixes.patch
iget-stop-fuse-from-using-iget-and-read_inode-try.patch
iget-stop-hfsplus-from-using-iget-and-read_inode.patch
iget-stop-isofs-from-using-read_inode.patch
iget-stop-jffs2-from-using-iget-and-read_inode.patch
iget-stop-jfs-from-using-iget-and-read_inode-try.patch
iget-stop-the-minix-filesystem-from-using-iget-and.patch
iget-stop-the-minix-filesystem-from-using-iget-and-checkpatch-fixes.patch
iget-stop-procfs-from-using-iget-and-read_inode.patch
iget-stop-procfs-from-using-iget-and-read_inode-checkpatch-fixes.patch
iget-stop-qnx4-from-using-iget-and-read_inode-try.patch
iget-stop-qnx4-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-romfs-from-using-iget-and-read_inode.patch
iget-stop-romfs-from-using-iget-and-read_inode-checkpatch-fixes.patch
iget-stop-the-sysv-filesystem-from-using-iget-and.patch
iget-stop-the-sysv-filesystem-from-using-iget-and-checkpatch-fixes.patch
iget-stop-ufs-from-using-iget-and-read_inode-try.patch
iget-stop-ufs-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-openpromfs-from-using-iget-and.patch
iget-stop-hostfs-from-using-iget-and-read_inode.patch
iget-stop-hppfs-from-using-iget-and-read_inode.patch
iget-remove-iget-and-the-read_inode-super-op-as.patch
mutex-subsystem-synchro-test-module.patch
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