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authorChristoph Hellwig <hch@infradead.org>2008-02-05 12:13:07 +1100
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>2008-02-07 18:22:02 +1100
commit35fec8df65217546f6d9d508b203c1d135a67fbc (patch)
treee6f7b4b8d4df7e2f5ac571ba39ad72f256102785 /fs
parent199037c598daf5f3602dace68c331665a4f4f0c1 (diff)
[XFS] clean up xfs_swapext
- stop using vnodes - use proper multiple label goto unwinding - give the struct file * variables saner names SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30366a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/xfs_dfrag.c67
1 files changed, 26 insertions, 41 deletions
diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index 03a42d21610..5d3285952ff 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -52,76 +52,61 @@ xfs_swapext(
xfs_swapext_t __user *sxu)
{
xfs_swapext_t *sxp;
- xfs_inode_t *ip=NULL, *tip=NULL;
- xfs_mount_t *mp;
- struct file *fp = NULL, *tfp = NULL;
- bhv_vnode_t *vp, *tvp;
+ xfs_inode_t *ip, *tip;
+ struct file *file, *target_file;
int error = 0;
sxp = kmem_alloc(sizeof(xfs_swapext_t), KM_MAYFAIL);
if (!sxp) {
error = XFS_ERROR(ENOMEM);
- goto error0;
+ goto out;
}
if (copy_from_user(sxp, sxu, sizeof(xfs_swapext_t))) {
error = XFS_ERROR(EFAULT);
- goto error0;
+ goto out_free_sxp;
}
/* Pull information for the target fd */
- if (((fp = fget((int)sxp->sx_fdtarget)) == NULL) ||
- ((vp = vn_from_inode(fp->f_path.dentry->d_inode)) == NULL)) {
+ file = fget((int)sxp->sx_fdtarget);
+ if (!file) {
error = XFS_ERROR(EINVAL);
- goto error0;
- }
-
- ip = xfs_vtoi(vp);
- if (ip == NULL) {
- error = XFS_ERROR(EBADF);
- goto error0;
+ goto out_free_sxp;
}
- if (((tfp = fget((int)sxp->sx_fdtmp)) == NULL) ||
- ((tvp = vn_from_inode(tfp->f_path.dentry->d_inode)) == NULL)) {
+ target_file = fget((int)sxp->sx_fdtmp);
+ if (!target_file) {
error = XFS_ERROR(EINVAL);
- goto error0;
+ goto out_put_file;
}
- tip = xfs_vtoi(tvp);
- if (tip == NULL) {
- error = XFS_ERROR(EBADF);
- goto error0;
- }
+ ip = XFS_I(file->f_path.dentry->d_inode);
+ tip = XFS_I(target_file->f_path.dentry->d_inode);
if (ip->i_mount != tip->i_mount) {
- error = XFS_ERROR(EINVAL);
- goto error0;
+ error = XFS_ERROR(EINVAL);
+ goto out_put_target_file;
}
if (ip->i_ino == tip->i_ino) {
- error = XFS_ERROR(EINVAL);
- goto error0;
+ error = XFS_ERROR(EINVAL);
+ goto out_put_target_file;
}
- mp = ip->i_mount;
-
- if (XFS_FORCED_SHUTDOWN(mp)) {
- error = XFS_ERROR(EIO);
- goto error0;
+ if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
+ error = XFS_ERROR(EIO);
+ goto out_put_target_file;
}
error = xfs_swap_extents(ip, tip, sxp);
- error0:
- if (fp != NULL)
- fput(fp);
- if (tfp != NULL)
- fput(tfp);
-
- if (sxp != NULL)
- kmem_free(sxp, sizeof(xfs_swapext_t));
-
+ out_put_target_file:
+ fput(target_file);
+ out_put_file:
+ fput(file);
+ out_free_sxp:
+ kmem_free(sxp, sizeof(xfs_swapext_t));
+ out:
return error;
}