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[XFS] Move the AIL lock into the struct xfs_ail 

Bring the ail lock inside the struct xfs_ail. This means the AIL can be
entirely manipulated via the struct xfs_ail rather than needing both the
struct xfs_mount and the struct xfs_ail.

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32350a

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 17:39:23 +11:00 committed by Lachlan McIlroy
parent 7b2e2a31f5
commit c7e8f26827
12 changed files with 59 additions and 58 deletions
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4
fs/xfs/quota/xfs_dquot.c
View File

@ -1333,7 +1333,7 @@ xfs_qm_dqflush_done(
if ((qip->qli_item.li_flags & XFS_LI_IN_AIL) &&
qip->qli_item.li_lsn == qip->qli_flush_lsn) {
spin_lock(&dqp->q_mount->m_ail_lock);
spin_lock(&dqp->q_mount->m_ail->xa_lock);
/*
* xfs_trans_delete_ail() drops the AIL lock.
*/
@ -1341,7 +1341,7 @@ xfs_qm_dqflush_done(
xfs_trans_delete_ail(dqp->q_mount,
(xfs_log_item_t*)qip);
else
spin_unlock(&dqp->q_mount->m_ail_lock);
spin_unlock(&dqp->q_mount->m_ail->xa_lock);
}
/*

2
fs/xfs/quota/xfs_dquot_item.c
View File

@ -555,7 +555,7 @@ xfs_qm_qoffend_logitem_committed(
xfs_qoff_logitem_t *qfs;
qfs = qfe->qql_start_lip;
spin_lock(&qfs->qql_item.li_mountp->m_ail_lock);
spin_lock(&qfs->qql_item.li_mountp->m_ail->xa_lock);
/*
* Delete the qoff-start logitem from the AIL.
* xfs_trans_delete_ail() drops the AIL lock.

4
fs/xfs/xfs_buf_item.c
View File

@ -408,7 +408,7 @@ xfs_buf_item_unpin(
XFS_BUF_SET_FSPRIVATE(bp, NULL);
XFS_BUF_CLR_IODONE_FUNC(bp);
} else {
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
xfs_trans_delete_ail(mp, (xfs_log_item_t *)bip);
xfs_buf_item_relse(bp);
ASSERT(XFS_BUF_FSPRIVATE(bp, void *) == NULL);
@ -1138,7 +1138,7 @@ xfs_buf_iodone(
*
* Either way, AIL is useless if we're forcing a shutdown.
*/
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
/*
* xfs_trans_delete_ail() drops the AIL lock.
*/

12
fs/xfs/xfs_extfree_item.c
View File

@ -111,7 +111,7 @@ xfs_efi_item_unpin(xfs_efi_log_item_t *efip, int stale)
xfs_mount_t *mp;
mp = efip->efi_item.li_mountp;
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
if (efip->efi_flags & XFS_EFI_CANCELED) {
/*
* xfs_trans_delete_ail() drops the AIL lock.
@ -120,7 +120,7 @@ xfs_efi_item_unpin(xfs_efi_log_item_t *efip, int stale)
xfs_efi_item_free(efip);
} else {
efip->efi_flags |= XFS_EFI_COMMITTED;
spin_unlock(&mp->m_ail_lock);
spin_unlock(&mp->m_ail->xa_lock);
}
}
@ -138,7 +138,7 @@ xfs_efi_item_unpin_remove(xfs_efi_log_item_t *efip, xfs_trans_t *tp)
xfs_log_item_desc_t *lidp;
mp = efip->efi_item.li_mountp;
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
if (efip->efi_flags & XFS_EFI_CANCELED) {
/*
* free the xaction descriptor pointing to this item
@ -153,7 +153,7 @@ xfs_efi_item_unpin_remove(xfs_efi_log_item_t *efip, xfs_trans_t *tp)
xfs_efi_item_free(efip);
} else {
efip->efi_flags |= XFS_EFI_COMMITTED;
spin_unlock(&mp->m_ail_lock);
spin_unlock(&mp->m_ail->xa_lock);
}
}
@ -352,7 +352,7 @@ xfs_efi_release(xfs_efi_log_item_t *efip,
ASSERT(efip->efi_next_extent > 0);
ASSERT(efip->efi_flags & XFS_EFI_COMMITTED);
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
ASSERT(efip->efi_next_extent >= nextents);
efip->efi_next_extent -= nextents;
extents_left = efip->efi_next_extent;
@ -363,7 +363,7 @@ xfs_efi_release(xfs_efi_log_item_t *efip,
xfs_trans_delete_ail(mp, (xfs_log_item_t *)efip);
xfs_efi_item_free(efip);
} else {
spin_unlock(&mp->m_ail_lock);
spin_unlock(&mp->m_ail->xa_lock);
}
}

4
fs/xfs/xfs_inode.c
View File

@ -2715,11 +2715,11 @@ xfs_idestroy(
ASSERT(((lip->li_flags & XFS_LI_IN_AIL) == 0) ||
XFS_FORCED_SHUTDOWN(ip->i_mount));
if (lip->li_flags & XFS_LI_IN_AIL) {
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
if (lip->li_flags & XFS_LI_IN_AIL)
xfs_trans_delete_ail(mp, lip);
else
spin_unlock(&mp->m_ail_lock);
spin_unlock(&mp->m_ail->xa_lock);
}
xfs_inode_item_destroy(ip);
ip->i_itemp = NULL;

8
fs/xfs/xfs_inode_item.c
View File

@ -991,7 +991,7 @@ xfs_iflush_done(
*/
if (iip->ili_logged &&
(iip->ili_item.li_lsn == iip->ili_flush_lsn)) {
spin_lock(&ip->i_mount->m_ail_lock);
spin_lock(&ip->i_mount->m_ail->xa_lock);
if (iip->ili_item.li_lsn == iip->ili_flush_lsn) {
/*
* xfs_trans_delete_ail() drops the AIL lock.
@ -999,7 +999,7 @@ xfs_iflush_done(
xfs_trans_delete_ail(ip->i_mount,
(xfs_log_item_t*)iip);
} else {
spin_unlock(&ip->i_mount->m_ail_lock);
spin_unlock(&ip->i_mount->m_ail->xa_lock);
}
}
@ -1038,14 +1038,14 @@ xfs_iflush_abort(
mp = ip->i_mount;
if (iip) {
if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
/*
* xfs_trans_delete_ail() drops the AIL lock.
*/
xfs_trans_delete_ail(mp, (xfs_log_item_t *)iip);
} else
spin_unlock(&mp->m_ail_lock);
spin_unlock(&mp->m_ail->xa_lock);
}
iip->ili_logged = 0;
/*

1
fs/xfs/xfs_log.c
View File

@ -567,7 +567,6 @@ xfs_log_mount(
/*
* Initialize the AIL now we have a log.
*/
spin_lock_init(&mp->m_ail_lock);
error = xfs_trans_ail_init(mp);
if (error) {
cmn_err(CE_WARN, "XFS: AIL initialisation failed: error %d", error);

16
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_lock);
spin_lock(&mp->m_ail->xa_lock);
/*
* xfs_trans_update_ail() drops the AIL lock.
*/
@ -2727,7 +2727,7 @@ xlog_recover_do_efd_trans(
* in the AIL.
*/
mp = log->l_mp;
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
lip = xfs_trans_ail_cursor_first(mp->m_ail, &cur, 0);
while (lip != NULL) {
if (lip->li_type == XFS_LI_EFI) {
@ -2739,14 +2739,14 @@ xlog_recover_do_efd_trans(
*/
xfs_trans_delete_ail(mp, lip);
xfs_efi_item_free(efip);
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
break;
}
}
lip = xfs_trans_ail_cursor_next(mp->m_ail, &cur);
}
xfs_trans_ail_cursor_done(mp->m_ail, &cur);
spin_unlock(&mp->m_ail_lock);
spin_unlock(&mp->m_ail->xa_lock);
}
/*
@ -3058,7 +3058,7 @@ xlog_recover_process_efis(
struct xfs_ail_cursor cur;
mp = log->l_mp;
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
lip = xfs_trans_ail_cursor_first(mp->m_ail, &cur, 0);
while (lip != NULL) {
@ -3084,16 +3084,16 @@ xlog_recover_process_efis(
continue;
}
spin_unlock(&mp->m_ail_lock);
spin_unlock(&mp->m_ail->xa_lock);
error = xlog_recover_process_efi(mp, efip);
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
if (error)
goto out;
lip = xfs_trans_ail_cursor_next(mp->m_ail, &cur);
}
out:
xfs_trans_ail_cursor_done(mp->m_ail, &cur);
spin_unlock(&mp->m_ail_lock);
spin_unlock(&mp->m_ail->xa_lock);
return error;
}

1
fs/xfs/xfs_mount.h
View File

@ -228,7 +228,6 @@ extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
typedef struct xfs_mount {
struct super_block *m_super;
xfs_tid_t m_tid; /* next unused tid for fs */
spinlock_t m_ail_lock; /* fs AIL mutex */
struct xfs_ail *m_ail; /* fs active log item list */
xfs_sb_t m_sb; /* copy of fs superblock */
spinlock_t m_sb_lock; /* sb counter lock */

4
fs/xfs/xfs_trans.c
View File

@ -1425,7 +1425,7 @@ xfs_trans_chunk_committed(
* the test below.
*/
mp = lip->li_mountp;
spin_lock(&mp->m_ail_lock);
spin_lock(&mp->m_ail->xa_lock);
if (XFS_LSN_CMP(item_lsn, lip->li_lsn) > 0) {
/*
* This will set the item's lsn to item_lsn
@ -1436,7 +1436,7 @@ xfs_trans_chunk_committed(
*/
xfs_trans_update_ail(mp, lip, item_lsn);
} else {
spin_unlock(&mp->m_ail_lock);
spin_unlock(&mp->m_ail->xa_lock);
}
/*

56
fs/xfs/xfs_trans_ail.c
View File

@ -1,5 +1,6 @@
/*
* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
* Copyright (c) 2008 Dave Chinner
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
@ -56,14 +57,14 @@ xfs_trans_ail_tail(
xfs_lsn_t lsn;
xfs_log_item_t *lip;
spin_lock(&ailp->xa_mount->m_ail_lock);
spin_lock(&ailp->xa_lock);
lip = xfs_ail_min(ailp);
if (lip == NULL) {
lsn = (xfs_lsn_t)0;
} else {
lsn = lip->li_lsn;
}
spin_unlock(&ailp->xa_mount->m_ail_lock);
spin_unlock(&ailp->xa_lock);
return lsn;
}
@ -252,7 +253,7 @@ xfsaild_push(
xfs_mount_t *mp = ailp->xa_mount;
struct xfs_ail_cursor *cur = &ailp->xa_cursors;
spin_lock(&mp->m_ail_lock);
spin_lock(&ailp->xa_lock);
xfs_trans_ail_cursor_init(ailp, cur);
lip = xfs_trans_ail_cursor_first(ailp, cur, *last_lsn);
if (!lip || XFS_FORCED_SHUTDOWN(mp)) {
@ -260,7 +261,7 @@ xfsaild_push(
* AIL is empty or our push has reached the end.
*/
xfs_trans_ail_cursor_done(ailp, cur);
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
last_pushed_lsn = 0;
return tout;
}
@ -295,7 +296,7 @@ xfsaild_push(
* skip to the next item in the list.
*/
lock_result = IOP_TRYLOCK(lip);
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
switch (lock_result) {
case XFS_ITEM_SUCCESS:
XFS_STATS_INC(xs_push_ail_success);
@ -332,7 +333,7 @@ xfsaild_push(
break;
}
spin_lock(&mp->m_ail_lock);
spin_lock(&ailp->xa_lock);
/* should we bother continuing? */
if (XFS_FORCED_SHUTDOWN(mp))
break;
@ -361,7 +362,7 @@ xfsaild_push(
lsn = lip->li_lsn;
}
xfs_trans_ail_cursor_done(ailp, cur);
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
if (flush_log) {
/*
@ -462,30 +463,31 @@ void
xfs_trans_update_ail(
xfs_mount_t *mp,
xfs_log_item_t *lip,
xfs_lsn_t lsn) __releases(mp->m_ail_lock)
xfs_lsn_t lsn) __releases(ailp->xa_lock)
{
xfs_log_item_t *dlip=NULL;
struct xfs_ail *ailp = mp->m_ail;
xfs_log_item_t *dlip = NULL;
xfs_log_item_t *mlip; /* ptr to minimum lip */
mlip = xfs_ail_min(mp->m_ail);
mlip = xfs_ail_min(ailp);
if (lip->li_flags & XFS_LI_IN_AIL) {
dlip = xfs_ail_delete(mp->m_ail, lip);
dlip = xfs_ail_delete(ailp, lip);
ASSERT(dlip == lip);
xfs_trans_ail_cursor_clear(mp->m_ail, dlip);
xfs_trans_ail_cursor_clear(ailp, dlip);
} else {
lip->li_flags |= XFS_LI_IN_AIL;
}
lip->li_lsn = lsn;
xfs_ail_insert(mp->m_ail, lip);
xfs_ail_insert(ailp, lip);
if (mlip == dlip) {
mlip = xfs_ail_min(mp->m_ail);
spin_unlock(&mp->m_ail_lock);
mlip = xfs_ail_min(ailp);
spin_unlock(&ailp->xa_lock);
xfs_log_move_tail(mp, mlip->li_lsn);
} else {
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
@ -509,27 +511,28 @@ xfs_trans_update_ail(
void
xfs_trans_delete_ail(
xfs_mount_t *mp,
xfs_log_item_t *lip) __releases(mp->m_ail_lock)
xfs_log_item_t *lip) __releases(ailp->xa_lock)
{
struct xfs_ail *ailp = mp->m_ail;
xfs_log_item_t *dlip;
xfs_log_item_t *mlip;
if (lip->li_flags & XFS_LI_IN_AIL) {
mlip = xfs_ail_min(mp->m_ail);
dlip = xfs_ail_delete(mp->m_ail, lip);
mlip = xfs_ail_min(ailp);
dlip = xfs_ail_delete(ailp, lip);
ASSERT(dlip == lip);
xfs_trans_ail_cursor_clear(mp->m_ail, dlip);
xfs_trans_ail_cursor_clear(ailp, dlip);
lip->li_flags &= ~XFS_LI_IN_AIL;
lip->li_lsn = 0;
if (mlip == dlip) {
mlip = xfs_ail_min(mp->m_ail);
spin_unlock(&mp->m_ail_lock);
mlip = xfs_ail_min(ailp);
spin_unlock(&ailp->xa_lock);
xfs_log_move_tail(mp, (mlip ? mlip->li_lsn : 0));
} else {
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
}
else {
@ -537,13 +540,11 @@ xfs_trans_delete_ail(
* If the file system is not being shutdown, we are in
* serious trouble if we get to this stage.
*/
if (XFS_FORCED_SHUTDOWN(mp))
spin_unlock(&mp->m_ail_lock);
else {
spin_unlock(&ailp->xa_lock);
if (!XFS_FORCED_SHUTDOWN(mp)) {
xfs_cmn_err(XFS_PTAG_AILDELETE, CE_ALERT, mp,
"%s: attempting to delete a log item that is not in the AIL",
__func__);
spin_unlock(&mp->m_ail_lock);
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
}
}
@ -578,6 +579,7 @@ xfs_trans_ail_init(
ailp->xa_mount = mp;
INIT_LIST_HEAD(&ailp->xa_ail);
spin_lock_init(&ailp->xa_lock);
error = xfsaild_start(ailp);
if (error)
goto out_free_ailp;

5
fs/xfs/xfs_trans_priv.h
View File

@ -79,6 +79,7 @@ struct xfs_ail {
struct task_struct *xa_task;
xfs_lsn_t xa_target;
struct xfs_ail_cursor xa_cursors;
spinlock_t xa_lock;
};
/*
@ -114,9 +115,9 @@ xfs_trans_ail_copy_lsn(
xfs_lsn_t *src)
{
ASSERT(sizeof(xfs_lsn_t) == 8); /* don't lock if it shrinks */
spin_lock(&ailp->xa_mount->m_ail_lock);
spin_lock(&ailp->xa_lock);
*dst = *src;
spin_unlock(&ailp->xa_mount->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
#else
static inline void