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iget: stop FreeVXFS from using iget() and read_inode()

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Stop the FreeVXFS filesystem from using iget() and read_inode().  Replace
vxfs_read_inode() with vxfs_iget(), and call that instead of iget().
vxfs_iget() then uses iget_locked() directly and returns a proper error code
instead of an inode in the event of an error.

vxfs_fill_super() returns any error incurred when getting the root inode
instead of EINVAL.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Howells 2008-02-07 00:15:39 -08:00 committed by Linus Torvalds
parent 17f95a7b44
commit d0b079483d
4 changed files with 39 additions and 22 deletions
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2
fs/freevxfs/vxfs_extern.h
View file

@ -58,7 +58,7 @@ extern struct inode * vxfs_get_fake_inode(struct super_block *,
extern void vxfs_put_fake_inode(struct inode *);
extern struct vxfs_inode_info * vxfs_blkiget(struct super_block *, u_long, ino_t);
extern struct vxfs_inode_info * vxfs_stiget(struct super_block *, ino_t);
extern void vxfs_read_inode(struct inode *);
extern struct inode * vxfs_iget(struct super_block *, ino_t);
extern void vxfs_clear_inode(struct inode *);
/* vxfs_lookup.c */

43
fs/freevxfs/vxfs_inode.c
View file

@ -129,7 +129,7 @@ vxfs_blkiget(struct super_block *sbp, u_long extent, ino_t ino)
* Description:
* Search the for inode number @ino in the filesystem
* described by @sbp. Use the specified inode table (@ilistp).
* Returns the matching VxFS inode on success, else a NULL pointer.
* Returns the matching VxFS inode on success, else an error code.
*/
static struct vxfs_inode_info *
__vxfs_iget(ino_t ino, struct inode *ilistp)
@ -157,12 +157,12 @@ __vxfs_iget(ino_t ino, struct inode *ilistp)
}
printk(KERN_WARNING "vxfs: error on page %p\n", pp);
return NULL;
return ERR_CAST(pp);
fail:
printk(KERN_WARNING "vxfs: unable to read inode %ld\n", (unsigned long)ino);
vxfs_put_page(pp);
return NULL;
return ERR_PTR(-ENOMEM);
}
/**
@ -178,7 +178,10 @@ __vxfs_iget(ino_t ino, struct inode *ilistp)
struct vxfs_inode_info *
vxfs_stiget(struct super_block *sbp, ino_t ino)
{
return __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_stilist);
struct vxfs_inode_info *vip;
vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_stilist);
return IS_ERR(vip) ? NULL : vip;
}
/**
@ -282,23 +285,32 @@ vxfs_put_fake_inode(struct inode *ip)
}
/**
* vxfs_read_inode - fill in inode information
* @ip: inode pointer to fill
* vxfs_iget - get an inode
* @sbp: the superblock to get the inode for
* @ino: the number of the inode to get
*
* Description:
* vxfs_read_inode reads the disk inode for @ip and fills
* in all relevant fields in @ip.
* vxfs_read_inode creates an inode, reads the disk inode for @ino and fills
* in all relevant fields in the new inode.
*/
void
vxfs_read_inode(struct inode *ip)
struct inode *
vxfs_iget(struct super_block *sbp, ino_t ino)
{
struct super_block *sbp = ip->i_sb;
struct vxfs_inode_info *vip;
const struct address_space_operations *aops;
ino_t ino = ip->i_ino;
struct inode *ip;
if (!(vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_ilist)))
return;
ip = iget_locked(sbp, ino);
if (!ip)
return ERR_PTR(-ENOMEM);
if (!(ip->i_state & I_NEW))
return ip;
vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_ilist);
if (IS_ERR(vip)) {
iget_failed(ip);
return ERR_CAST(vip);
}
vxfs_iinit(ip, vip);
@ -323,7 +335,8 @@ vxfs_read_inode(struct inode *ip)
} else
init_special_inode(ip, ip->i_mode, old_decode_dev(vip->vii_rdev));
return;
unlock_new_inode(ip);
return ip;
}
/**

6
fs/freevxfs/vxfs_lookup.c
View file

@ -213,10 +213,10 @@ vxfs_lookup(struct inode *dip, struct dentry *dp, struct nameidata *nd)
lock_kernel();
ino = vxfs_inode_by_name(dip, dp);
if (ino) {
ip = iget(dip->i_sb, ino);
if (!ip) {
ip = vxfs_iget(dip->i_sb, ino);
if (IS_ERR(ip)) {
unlock_kernel();
return ERR_PTR(-EACCES);
return ERR_CAST(ip);
}
}
unlock_kernel();

10
fs/freevxfs/vxfs_super.c
View file

@ -60,7 +60,6 @@ static int vxfs_statfs(struct dentry *, struct kstatfs *);
static int vxfs_remount(struct super_block *, int *, char *);
static const struct super_operations vxfs_super_ops = {
.read_inode = vxfs_read_inode,
.clear_inode = vxfs_clear_inode,
.put_super = vxfs_put_super,
.statfs = vxfs_statfs,
@ -153,6 +152,7 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
struct buffer_head *bp = NULL;
u_long bsize;
struct inode *root;
int ret = -EINVAL;
sbp->s_flags |= MS_RDONLY;
@ -219,7 +219,11 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
}
sbp->s_op = &vxfs_super_ops;
root = iget(sbp, VXFS_ROOT_INO);
root = vxfs_iget(sbp, VXFS_ROOT_INO);
if (IS_ERR(root)) {
ret = PTR_ERR(root);
goto out;
}
sbp->s_root = d_alloc_root(root);
if (!sbp->s_root) {
iput(root);
@ -236,7 +240,7 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
out:
brelse(bp);
kfree(infp);
return -EINVAL;
return ret;
}
/*