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

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

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

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Dave Kleikamp <shaggy@linux.vnet.ibm.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 00:15:43 -08:00
committed by Linus Torvalds
parent 5451f79f5f
commit eab1df71a0
4 changed files with 40 additions and 31 deletions
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15
fs/jfs/super.c
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@@ -414,7 +414,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
struct inode *inode;
int rc;
s64 newLVSize = 0;
int flag;
int flag, ret = -EINVAL;
jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags);
@@ -461,8 +461,10 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
* Initialize direct-mapping inode/address-space
*/
inode = new_inode(sb);
if (inode == NULL)
if (inode == NULL) {
ret = -ENOMEM;
goto out_kfree;
}
inode->i_ino = 0;
inode->i_nlink = 1;
inode->i_size = sb->s_bdev->bd_inode->i_size;
@@ -494,9 +496,11 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_magic = JFS_SUPER_MAGIC;
inode = iget(sb, ROOT_I);
if (!inode || is_bad_inode(inode))
inode = jfs_iget(sb, ROOT_I);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
goto out_no_root;
}
sb->s_root = d_alloc_root(inode);
if (!sb->s_root)
goto out_no_root;
@@ -536,7 +540,7 @@ out_kfree:
if (sbi->nls_tab)
unload_nls(sbi->nls_tab);
kfree(sbi);
return -EINVAL;
return ret;
}
static void jfs_write_super_lockfs(struct super_block *sb)
@@ -726,7 +730,6 @@ out:
static const struct super_operations jfs_super_operations = {
.alloc_inode = jfs_alloc_inode,
.destroy_inode = jfs_destroy_inode,
.read_inode = jfs_read_inode,
.dirty_inode = jfs_dirty_inode,
.write_inode = jfs_write_inode,
.delete_inode = jfs_delete_inode,