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[XFS] Given the log a pointer to the AIL 

When we need to go from the log to the AIL, we have to go via the
xfs_mount. Add a xfs_ail pointer to the log so we can go directly to the
AIL associated with the log.

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32351a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
This commit is contained in:
David Chinner 2008-10-30 17:39:35 +11:00 committed by Lachlan McIlroy
parent c7e8f26827
commit a9c21c1b9d
3 changed files with 24 additions and 22 deletions
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3
fs/xfs/xfs_log.c
View File

@ -572,6 +572,7 @@ xfs_log_mount(
cmn_err(CE_WARN, "XFS: AIL initialisation failed: error %d", error);
goto error;
}
mp->m_log->l_ailp = mp->m_ail;
/*
* skip log recovery on a norecovery mount. pretend it all
@ -908,7 +909,7 @@ xfs_log_need_covered(xfs_mount_t *mp)
spin_lock(&log->l_icloglock);
if (((log->l_covered_state == XLOG_STATE_COVER_NEED) ||
(log->l_covered_state == XLOG_STATE_COVER_NEED2))
&& !xfs_trans_ail_tail(mp->m_ail)
&& !xfs_trans_ail_tail(log->l_ailp)
&& xlog_iclogs_empty(log)) {
if (log->l_covered_state == XLOG_STATE_COVER_NEED)
log->l_covered_state = XLOG_STATE_COVER_DONE;

1
fs/xfs/xfs_log_priv.h
View File

@ -404,6 +404,7 @@ typedef struct xlog_in_core {
typedef struct log {
/* The following fields don't need locking */
struct xfs_mount *l_mp; /* mount point */
struct xfs_ail *l_ailp; /* AIL log is working with */
struct xfs_buf *l_xbuf; /* extra buffer for log
* wrapping */
struct xfs_buftarg *l_targ; /* buftarg of log */

42
fs/xfs/xfs_log_recover.c
View File

@ -2681,7 +2681,7 @@ xlog_recover_do_efi_trans(
efip->efi_next_extent = efi_formatp->efi_nextents;
efip->efi_flags |= XFS_EFI_COMMITTED;
spin_lock(&mp->m_ail->xa_lock);
spin_lock(&log->l_ailp->xa_lock);
/*
* xfs_trans_update_ail() drops the AIL lock.
*/
@ -2710,6 +2710,7 @@ xlog_recover_do_efd_trans(
xfs_log_item_t *lip;
__uint64_t efi_id;
struct xfs_ail_cursor cur;
struct xfs_ail *ailp;
if (pass == XLOG_RECOVER_PASS1) {
return;
@ -2727,8 +2728,9 @@ xlog_recover_do_efd_trans(
* in the AIL.
*/
mp = log->l_mp;
spin_lock(&mp->m_ail->xa_lock);
lip = xfs_trans_ail_cursor_first(mp->m_ail, &cur, 0);
ailp = log->l_ailp;
spin_lock(&ailp->xa_lock);
lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
while (lip != NULL) {
if (lip->li_type == XFS_LI_EFI) {
efip = (xfs_efi_log_item_t *)lip;
@ -2739,14 +2741,14 @@ xlog_recover_do_efd_trans(
*/
xfs_trans_delete_ail(mp, lip);
xfs_efi_item_free(efip);
spin_lock(&mp->m_ail->xa_lock);
spin_lock(&ailp->xa_lock);
break;
}
}
lip = xfs_trans_ail_cursor_next(mp->m_ail, &cur);
lip = xfs_trans_ail_cursor_next(ailp, &cur);
}
xfs_trans_ail_cursor_done(mp->m_ail, &cur);
spin_unlock(&mp->m_ail->xa_lock);
xfs_trans_ail_cursor_done(ailp, &cur);
spin_unlock(&ailp->xa_lock);
}
/*
@ -3053,14 +3055,13 @@ xlog_recover_process_efis(
{
xfs_log_item_t *lip;
xfs_efi_log_item_t *efip;
xfs_mount_t *mp;
int error = 0;
struct xfs_ail_cursor cur;
struct xfs_ail *ailp;
mp = log->l_mp;
spin_lock(&mp->m_ail->xa_lock);
lip = xfs_trans_ail_cursor_first(mp->m_ail, &cur, 0);
ailp = log->l_ailp;
spin_lock(&ailp->xa_lock);
lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
while (lip != NULL) {
/*
* We're done when we see something other than an EFI.
@ -3068,8 +3069,7 @@ xlog_recover_process_efis(
*/
if (lip->li_type != XFS_LI_EFI) {
#ifdef DEBUG
for (; lip;
lip = xfs_trans_ail_cursor_next(mp->m_ail, &cur))
for (; lip; lip = xfs_trans_ail_cursor_next(ailp, &cur))
ASSERT(lip->li_type != XFS_LI_EFI);
#endif
break;
@ -3080,20 +3080,20 @@ xlog_recover_process_efis(
*/
efip = (xfs_efi_log_item_t *)lip;
if (efip->efi_flags & XFS_EFI_RECOVERED) {
lip = xfs_trans_ail_cursor_next(mp->m_ail, &cur);
lip = xfs_trans_ail_cursor_next(ailp, &cur);
continue;
}
spin_unlock(&mp->m_ail->xa_lock);
error = xlog_recover_process_efi(mp, efip);
spin_lock(&mp->m_ail->xa_lock);
spin_unlock(&ailp->xa_lock);
error = xlog_recover_process_efi(log->l_mp, efip);
spin_lock(&ailp->xa_lock);
if (error)
goto out;
lip = xfs_trans_ail_cursor_next(mp->m_ail, &cur);
lip = xfs_trans_ail_cursor_next(ailp, &cur);
}
out:
xfs_trans_ail_cursor_done(mp->m_ail, &cur);
spin_unlock(&mp->m_ail->xa_lock);
xfs_trans_ail_cursor_done(ailp, &cur);
spin_unlock(&ailp->xa_lock);
return error;
}