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xfs: fix nfs export of 64-bit inodes numbers on 32-bit kernels

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commit c29f7d457a upstream.

The i_ino field in the VFS inode is of type unsigned long and thus can't
hold the full 64-bit inode number on 32-bit kernels.  We have the full
inode number in the XFS inode, so use that one for nfs exports.  Note
that I've also switched the 32-bit file handles types to it, just to make
the code more consistent and copy & paste errors less likely to happen.

Reported-by: Guoquan Yang <ygq51@hotmail.com>
Reported-by: Hank Peng <pengxihan@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Christoph Hellwig 2011-12-12 17:22:29 -05:00 committed by Greg Kroah-Hartman
parent ccd5790e5f
commit 898726cbef
1 changed files with 4 additions and 4 deletions
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8
fs/xfs/linux-2.6/xfs_export.c
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@ -98,22 +98,22 @@ xfs_fs_encode_fh(
switch (fileid_type) {
case FILEID_INO32_GEN_PARENT:
spin_lock(&dentry->d_lock);
fid->i32.parent_ino = dentry->d_parent->d_inode->i_ino;
fid->i32.parent_ino = XFS_I(dentry->d_parent->d_inode)->i_ino;
fid->i32.parent_gen = dentry->d_parent->d_inode->i_generation;
spin_unlock(&dentry->d_lock);
/*FALLTHRU*/
case FILEID_INO32_GEN:
fid->i32.ino = inode->i_ino;
fid->i32.ino = XFS_I(inode)->i_ino;
fid->i32.gen = inode->i_generation;
break;
case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG:
spin_lock(&dentry->d_lock);
fid64->parent_ino = dentry->d_parent->d_inode->i_ino;
fid64->parent_ino = XFS_I(dentry->d_parent->d_inode)->i_ino;
fid64->parent_gen = dentry->d_parent->d_inode->i_generation;
spin_unlock(&dentry->d_lock);
/*FALLTHRU*/
case FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG:
fid64->ino = inode->i_ino;
fid64->ino = XFS_I(inode)->i_ino;
fid64->gen = inode->i_generation;
break;
}