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authorDavid Howells <dhowells@redhat.com>2008-02-07 08:15:37 (GMT)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-07 16:42:27 (GMT)
commit1d1fe1ee02b9ac2660995b10e35dd41448fef011 (patch)
tree8961bbe5a36a07dc8ad8c6cd3e973ce0fcde5850 /fs/ext4/inode.c
parent473043dcee1874aab99f66b0362b344618eb3790 (diff)
downloadlinux-1d1fe1ee02b9ac2660995b10e35dd41448fef011.tar.xz
iget: stop EXT4 from using iget() and read_inode()
Stop the EXT4 filesystem from using iget() and read_inode(). Replace ext4_read_inode() with ext4_iget(), and call that instead of iget(). ext4_iget() then uses iget_locked() directly and returns a proper error code instead of an inode in the event of an error. ext4_fill_super() returns any error incurred when getting the root inode instead of EINVAL. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: "Theodore Ts'o" <tytso@mit.edu> Acked-by: Jan Kara <jack@suse.cz> Cc: <linux-ext4@vger.kernel.org> 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>
Diffstat (limited to 'fs/ext4/inode.c')
-rw-r--r--fs/ext4/inode.c25
1 files changed, 19 insertions, 6 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 0e9055c..f4e3874 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2680,21 +2680,31 @@ static blkcnt_t ext4_inode_blocks(struct ext4_inode *raw_inode,
}
}
-void ext4_read_inode(struct inode * inode)
+struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
{
struct ext4_iloc iloc;
struct ext4_inode *raw_inode;
- struct ext4_inode_info *ei = EXT4_I(inode);
+ struct ext4_inode_info *ei;
struct buffer_head *bh;
+ struct inode *inode;
+ long ret;
int block;
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+
+ ei = EXT4_I(inode);
#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
ei->i_acl = EXT4_ACL_NOT_CACHED;
ei->i_default_acl = EXT4_ACL_NOT_CACHED;
#endif
ei->i_block_alloc_info = NULL;
- if (__ext4_get_inode_loc(inode, &iloc, 0))
+ ret = __ext4_get_inode_loc(inode, &iloc, 0);
+ if (ret < 0)
goto bad_inode;
bh = iloc.bh;
raw_inode = ext4_raw_inode(&iloc);
@@ -2720,6 +2730,7 @@ void ext4_read_inode(struct inode * inode)
!(EXT4_SB(inode->i_sb)->s_mount_state & EXT4_ORPHAN_FS)) {
/* this inode is deleted */
brelse (bh);
+ ret = -ESTALE;
goto bad_inode;
}
/* The only unlinked inodes we let through here have
@@ -2758,6 +2769,7 @@ void ext4_read_inode(struct inode * inode)
if (EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize >
EXT4_INODE_SIZE(inode->i_sb)) {
brelse (bh);
+ ret = -EIO;
goto bad_inode;
}
if (ei->i_extra_isize == 0) {
@@ -2811,11 +2823,12 @@ void ext4_read_inode(struct inode * inode)
}
brelse (iloc.bh);
ext4_set_inode_flags(inode);
- return;
+ unlock_new_inode(inode);
+ return inode;
bad_inode:
- make_bad_inode(inode);
- return;
+ iget_failed(inode);
+ return ERR_PTR(ret);
}
static int ext4_inode_blocks_set(handle_t *handle,