[XFS] Add ail pointer into log items
Add an xfs_ail pointer to log items so that the log items can reference
the AIL directly during callbacks without needed a struct xfs_mount.
SGI-PV: 988143
SGI-Modid: xfs-linux-melb:xfs-kern:32352a
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index c557fd6..793e53c 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -731,6 +731,7 @@
bip->bli_item.li_type = XFS_LI_BUF;
bip->bli_item.li_ops = &xfs_buf_item_ops;
bip->bli_item.li_mountp = mp;
+ bip->bli_item.li_ailp = mp->m_ail;
bip->bli_buf = bp;
xfs_buf_hold(bp);
bip->bli_format.blf_type = XFS_LI_BUF;
@@ -1123,11 +1124,13 @@
xfs_buf_log_item_t *bip)
{
struct xfs_mount *mp;
+ struct xfs_ail *ailp;
ASSERT(bip->bli_buf == bp);
xfs_buf_rele(bp);
mp = bip->bli_item.li_mountp;
+ ailp = bip->bli_item.li_ailp;
/*
* If we are forcibly shutting down, this may well be
@@ -1138,7 +1141,7 @@
*
* Either way, AIL is useless if we're forcing a shutdown.
*/
- spin_lock(&mp->m_ail->xa_lock);
+ spin_lock(&ailp->xa_lock);
/*
* xfs_trans_delete_ail() drops the AIL lock.
*/