xfs: eliminate committed arg from xfs_bmap_finish
Calls to xfs_bmap_finish() and xfs_trans_ijoin(), and the
associated comments were replicated several times across
the attribute code, all dealing with what to do if the
transaction was or wasn't committed.
And in that replicated code, an ASSERT() test of an
uninitialized variable occurs in several locations:
error = xfs_attr_thing(&args);
if (!error) {
error = xfs_bmap_finish(&args.trans, args.flist,
&committed);
}
if (error) {
ASSERT(committed);
If the first xfs_attr_thing() failed, we'd skip the xfs_bmap_finish,
never set "committed", and then test it in the ASSERT.
Fix this up by moving the committed state internal to xfs_bmap_finish,
and add a new inode argument. If an inode is passed in, it is passed
through to __xfs_trans_roll() and joined to the transaction there if
the transaction was committed.
xfs_qm_dqalloc() was a little unique in that it called bjoin rather
than ijoin, but as Dave points out we can detect the committed state
but checking whether (*tpp != tp).
Addresses-Coverity-Id: 102360
Addresses-Coverity-Id: 102361
Addresses-Coverity-Id: 102363
Addresses-Coverity-Id: 102364
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 8ee3939..ae3758a 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1143,7 +1143,6 @@
xfs_bmap_free_t free_list;
xfs_fsblock_t first_block;
bool unlock_dp_on_error = false;
- int committed;
prid_t prid;
struct xfs_dquot *udqp = NULL;
struct xfs_dquot *gdqp = NULL;
@@ -1226,7 +1225,7 @@
* pointing to itself.
*/
error = xfs_dir_ialloc(&tp, dp, mode, is_dir ? 2 : 1, rdev,
- prid, resblks > 0, &ip, &committed);
+ prid, resblks > 0, &ip, NULL);
if (error)
goto out_trans_cancel;
@@ -1275,7 +1274,7 @@
*/
xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp);
- error = xfs_bmap_finish(&tp, &free_list, &committed);
+ error = xfs_bmap_finish(&tp, &free_list, NULL);
if (error)
goto out_bmap_cancel;
@@ -1427,7 +1426,6 @@
int error;
xfs_bmap_free_t free_list;
xfs_fsblock_t first_block;
- int committed;
int resblks;
trace_xfs_link(tdp, target_name);
@@ -1502,11 +1500,10 @@
* link transaction goes to disk before returning to
* the user.
*/
- if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) {
+ if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC))
xfs_trans_set_sync(tp);
- }
- error = xfs_bmap_finish (&tp, &free_list, &committed);
+ error = xfs_bmap_finish(&tp, &free_list, NULL);
if (error) {
xfs_bmap_cancel(&free_list);
goto error_return;
@@ -1555,7 +1552,6 @@
xfs_fileoff_t first_unmap_block;
xfs_fileoff_t last_block;
xfs_filblks_t unmap_len;
- int committed;
int error = 0;
int done = 0;
@@ -1601,9 +1597,7 @@
* Duplicate the transaction that has the permanent
* reservation and commit the old transaction.
*/
- error = xfs_bmap_finish(&tp, &free_list, &committed);
- if (committed)
- xfs_trans_ijoin(tp, ip, 0);
+ error = xfs_bmap_finish(&tp, &free_list, ip);
if (error)
goto out_bmap_cancel;
@@ -1774,7 +1768,6 @@
{
xfs_bmap_free_t free_list;
xfs_fsblock_t first_block;
- int committed;
struct xfs_mount *mp = ip->i_mount;
struct xfs_trans *tp;
int error;
@@ -1841,7 +1834,7 @@
* Just ignore errors at this point. There is nothing we can do except
* to try to keep going. Make sure it's not a silent error.
*/
- error = xfs_bmap_finish(&tp, &free_list, &committed);
+ error = xfs_bmap_finish(&tp, &free_list, NULL);
if (error) {
xfs_notice(mp, "%s: xfs_bmap_finish returned error %d",
__func__, error);
@@ -2523,7 +2516,6 @@
int error = 0;
xfs_bmap_free_t free_list;
xfs_fsblock_t first_block;
- int committed;
uint resblks;
trace_xfs_remove(dp, name);
@@ -2624,7 +2616,7 @@
if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC))
xfs_trans_set_sync(tp);
- error = xfs_bmap_finish(&tp, &free_list, &committed);
+ error = xfs_bmap_finish(&tp, &free_list, NULL);
if (error)
goto out_bmap_cancel;
@@ -2701,7 +2693,6 @@
struct xfs_trans *tp,
struct xfs_bmap_free *free_list)
{
- int committed = 0;
int error;
/*
@@ -2711,7 +2702,7 @@
if (tp->t_mountp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC))
xfs_trans_set_sync(tp);
- error = xfs_bmap_finish(&tp, free_list, &committed);
+ error = xfs_bmap_finish(&tp, free_list, NULL);
if (error) {
xfs_bmap_cancel(free_list);
xfs_trans_cancel(tp);