diff options
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.c | 31 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.h | 9 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_trace.h | 10 | ||||
| -rw-r--r-- | fs/xfs/quota/xfs_dquot.c | 6 | ||||
| -rw-r--r-- | fs/xfs/xfs_buf_item.c | 6 | ||||
| -rw-r--r-- | fs/xfs/xfs_log.c | 6 | ||||
| -rw-r--r-- | fs/xfs/xfs_log_recover.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_mount.c | 19 | ||||
| -rw-r--r-- | fs/xfs/xfs_trans_buf.c | 4 |
9 files changed, 39 insertions, 54 deletions
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 5e68099db2a..c7722761540 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -499,16 +499,14 @@ found: spin_unlock(&pag->pag_buf_lock); xfs_perag_put(pag); - if (xfs_buf_cond_lock(bp)) { - /* failed, so wait for the lock if requested. */ - if (!(flags & XBF_TRYLOCK)) { - xfs_buf_lock(bp); - XFS_STATS_INC(xb_get_locked_waited); - } else { + if (!xfs_buf_trylock(bp)) { + if (flags & XBF_TRYLOCK) { xfs_buf_rele(bp); XFS_STATS_INC(xb_busy_locked); return NULL; } + xfs_buf_lock(bp); + XFS_STATS_INC(xb_get_locked_waited); } /* @@ -896,8 +894,8 @@ xfs_buf_rele( * to push on stale inode buffers. */ int -xfs_buf_cond_lock( - xfs_buf_t *bp) +xfs_buf_trylock( + struct xfs_buf *bp) { int locked; @@ -907,15 +905,8 @@ xfs_buf_cond_lock( else if (atomic_read(&bp->b_pin_count) && (bp->b_flags & XBF_STALE)) xfs_log_force(bp->b_target->bt_mount, 0); - trace_xfs_buf_cond_lock(bp, _RET_IP_); - return locked ? 0 : -EBUSY; -} - -int -xfs_buf_lock_value( - xfs_buf_t *bp) -{ - return bp->b_sema.count; + trace_xfs_buf_trylock(bp, _RET_IP_); + return locked; } /* @@ -929,7 +920,7 @@ xfs_buf_lock_value( */ void xfs_buf_lock( - xfs_buf_t *bp) + struct xfs_buf *bp) { trace_xfs_buf_lock(bp, _RET_IP_); @@ -950,7 +941,7 @@ xfs_buf_lock( */ void xfs_buf_unlock( - xfs_buf_t *bp) + struct xfs_buf *bp) { if ((bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q)) == XBF_DELWRI) { atomic_inc(&bp->b_hold); @@ -1694,7 +1685,7 @@ xfs_buf_delwri_split( list_for_each_entry_safe(bp, n, dwq, b_list) { ASSERT(bp->b_flags & XBF_DELWRI); - if (!XFS_BUF_ISPINNED(bp) && !xfs_buf_cond_lock(bp)) { + if (!XFS_BUF_ISPINNED(bp) && xfs_buf_trylock(bp)) { if (!force && time_before(jiffies, bp->b_queuetime + age)) { xfs_buf_unlock(bp); diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 6847dc4dcee..706c4006911 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -187,10 +187,11 @@ extern void xfs_buf_free(xfs_buf_t *); extern void xfs_buf_rele(xfs_buf_t *); /* Locking and Unlocking Buffers */ -extern int xfs_buf_cond_lock(xfs_buf_t *); -extern int xfs_buf_lock_value(xfs_buf_t *); +extern int xfs_buf_trylock(xfs_buf_t *); extern void xfs_buf_lock(xfs_buf_t *); extern void xfs_buf_unlock(xfs_buf_t *); +#define xfs_buf_islocked(bp) \ + ((bp)->b_sema.count <= 0) /* Buffer Read and Write Routines */ extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp); @@ -308,10 +309,6 @@ xfs_buf_set_ref( #define XFS_BUF_ISPINNED(bp) atomic_read(&((bp)->b_pin_count)) -#define XFS_BUF_VALUSEMA(bp) xfs_buf_lock_value(bp) -#define XFS_BUF_CPSEMA(bp) (xfs_buf_cond_lock(bp) == 0) -#define XFS_BUF_VSEMA(bp) xfs_buf_unlock(bp) -#define XFS_BUF_PSEMA(bp,x) xfs_buf_lock(bp) #define XFS_BUF_FINISH_IOWAIT(bp) complete(&bp->b_iowait); #define XFS_BUF_SET_TARGET(bp, target) ((bp)->b_target = (target)) diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h index 4fe53f9f047..3bdfcb9f52b 100644 --- a/fs/xfs/linux-2.6/xfs_trace.h +++ b/fs/xfs/linux-2.6/xfs_trace.h @@ -293,7 +293,7 @@ DECLARE_EVENT_CLASS(xfs_buf_class, __entry->buffer_length = bp->b_buffer_length; __entry->hold = atomic_read(&bp->b_hold); __entry->pincount = atomic_read(&bp->b_pin_count); - __entry->lockval = xfs_buf_lock_value(bp); + __entry->lockval = bp->b_sema.count; __entry->flags = bp->b_flags; __entry->caller_ip = caller_ip; ), @@ -323,7 +323,7 @@ DEFINE_BUF_EVENT(xfs_buf_bawrite); DEFINE_BUF_EVENT(xfs_buf_bdwrite); DEFINE_BUF_EVENT(xfs_buf_lock); DEFINE_BUF_EVENT(xfs_buf_lock_done); -DEFINE_BUF_EVENT(xfs_buf_cond_lock); +DEFINE_BUF_EVENT(xfs_buf_trylock); DEFINE_BUF_EVENT(xfs_buf_unlock); DEFINE_BUF_EVENT(xfs_buf_iowait); DEFINE_BUF_EVENT(xfs_buf_iowait_done); @@ -366,7 +366,7 @@ DECLARE_EVENT_CLASS(xfs_buf_flags_class, __entry->flags = flags; __entry->hold = atomic_read(&bp->b_hold); __entry->pincount = atomic_read(&bp->b_pin_count); - __entry->lockval = xfs_buf_lock_value(bp); + __entry->lockval = bp->b_sema.count; __entry->caller_ip = caller_ip; ), TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " @@ -409,7 +409,7 @@ TRACE_EVENT(xfs_buf_ioerror, __entry->buffer_length = bp->b_buffer_length; __entry->hold = atomic_read(&bp->b_hold); __entry->pincount = atomic_read(&bp->b_pin_count); - __entry->lockval = xfs_buf_lock_value(bp); + __entry->lockval = bp->b_sema.count; __entry->error = error; __entry->flags = bp->b_flags; __entry->caller_ip = caller_ip; @@ -454,7 +454,7 @@ DECLARE_EVENT_CLASS(xfs_buf_item_class, __entry->buf_flags = bip->bli_buf->b_flags; __entry->buf_hold = atomic_read(&bip->bli_buf->b_hold); __entry->buf_pincount = atomic_read(&bip->bli_buf->b_pin_count); - __entry->buf_lockval = xfs_buf_lock_value(bip->bli_buf); + __entry->buf_lockval = bip->bli_buf->b_sema.count; __entry->li_desc = bip->bli_item.li_desc; __entry->li_flags = bip->bli_item.li_flags; ), diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c index 6fa21460381..dec11497a2e 100644 --- a/fs/xfs/quota/xfs_dquot.c +++ b/fs/xfs/quota/xfs_dquot.c @@ -318,7 +318,7 @@ xfs_qm_init_dquot_blk( ASSERT(tp); ASSERT(XFS_BUF_ISBUSY(bp)); - ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); + ASSERT(xfs_buf_islocked(bp)); d = (xfs_dqblk_t *)XFS_BUF_PTR(bp); @@ -534,7 +534,7 @@ xfs_qm_dqtobp( } ASSERT(XFS_BUF_ISBUSY(bp)); - ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); + ASSERT(xfs_buf_islocked(bp)); /* * calculate the location of the dquot inside the buffer. @@ -622,7 +622,7 @@ xfs_qm_dqread( * brelse it because we have the changes incore. */ ASSERT(XFS_BUF_ISBUSY(bp)); - ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); + ASSERT(xfs_buf_islocked(bp)); xfs_trans_brelse(tp, bp); return (error); diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 7b7e005e3dc..da399ac4411 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -420,7 +420,7 @@ xfs_buf_item_unpin( if (freed && stale) { ASSERT(bip->bli_flags & XFS_BLI_STALE); - ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); + ASSERT(xfs_buf_islocked(bp)); ASSERT(!(XFS_BUF_ISDELAYWRITE(bp))); ASSERT(XFS_BUF_ISSTALE(bp)); ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL); @@ -483,7 +483,7 @@ xfs_buf_item_trylock( if (XFS_BUF_ISPINNED(bp)) return XFS_ITEM_PINNED; - if (!XFS_BUF_CPSEMA(bp)) + if (!xfs_buf_trylock(bp)) return XFS_ITEM_LOCKED; /* take a reference to the buffer. */ @@ -905,7 +905,7 @@ xfs_buf_attach_iodone( xfs_log_item_t *head_lip; ASSERT(XFS_BUF_ISBUSY(bp)); - ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); + ASSERT(xfs_buf_islocked(bp)); lip->li_cb = cb; if (XFS_BUF_FSPRIVATE(bp, void *) != NULL) { diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 5b24a71811f..68e053ea6e7 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -1059,7 +1059,7 @@ xlog_alloc_log(xfs_mount_t *mp, XFS_BUF_SET_IODONE_FUNC(bp, xlog_iodone); XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)1); ASSERT(XFS_BUF_ISBUSY(bp)); - ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); + ASSERT(xfs_buf_islocked(bp)); log->l_xbuf = bp; spin_lock_init(&log->l_icloglock); @@ -1090,7 +1090,7 @@ xlog_alloc_log(xfs_mount_t *mp, log->l_iclog_size, 0); if (!bp) goto out_free_iclog; - if (!XFS_BUF_CPSEMA(bp)) + if (!xfs_buf_trylock(bp)) ASSERT(0); XFS_BUF_SET_IODONE_FUNC(bp, xlog_iodone); XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)1); @@ -1118,7 +1118,7 @@ xlog_alloc_log(xfs_mount_t *mp, iclog->ic_datap = (char *)iclog->ic_data + log->l_iclog_hsize; ASSERT(XFS_BUF_ISBUSY(iclog->ic_bp)); - ASSERT(XFS_BUF_VALUSEMA(iclog->ic_bp) <= 0); + ASSERT(xfs_buf_islocked(iclog->ic_bp)); init_waitqueue_head(&iclog->ic_force_wait); init_waitqueue_head(&iclog->ic_write_wait); diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index fb528b354c0..a74e2640834 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -264,7 +264,7 @@ xlog_bwrite( XFS_BUF_ZEROFLAGS(bp); XFS_BUF_BUSY(bp); XFS_BUF_HOLD(bp); - XFS_BUF_PSEMA(bp, PRIBIO); + xfs_buf_lock(bp); XFS_BUF_SET_COUNT(bp, BBTOB(nbblks)); XFS_BUF_SET_TARGET(bp, log->l_mp->m_logdev_targp); diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 63659ee316b..77ffe3ce71f 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1941,22 +1941,19 @@ unwind: * the superblock buffer if it can be locked without sleeping. * If it can't then we'll return NULL. */ -xfs_buf_t * +struct xfs_buf * xfs_getsb( - xfs_mount_t *mp, - int flags) + struct xfs_mount *mp, + int flags) { - xfs_buf_t *bp; + struct xfs_buf *bp = mp->m_sb_bp; - ASSERT(mp->m_sb_bp != NULL); - bp = mp->m_sb_bp; - if (flags & XBF_TRYLOCK) { - if (!XFS_BUF_CPSEMA(bp)) { + if (!xfs_buf_trylock(bp)) { + if (flags & XBF_TRYLOCK) return NULL; - } - } else { - XFS_BUF_PSEMA(bp, PRIBIO); + xfs_buf_lock(bp); } + XFS_BUF_HOLD(bp); ASSERT(XFS_BUF_ISDONE(bp)); return bp; diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index 03b3b7f85a3..bd544578785 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -160,7 +160,7 @@ xfs_trans_get_buf(xfs_trans_t *tp, */ bp = xfs_trans_buf_item_match(tp, target_dev, blkno, len); if (bp != NULL) { - ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); + ASSERT(xfs_buf_islocked(bp)); if (XFS_FORCED_SHUTDOWN(tp->t_mountp)) XFS_BUF_SUPER_STALE(bp); @@ -327,7 +327,7 @@ xfs_trans_read_buf( */ bp = xfs_trans_buf_item_match(tp, target, blkno, len); if (bp != NULL) { - ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); + ASSERT(xfs_buf_islocked(bp)); ASSERT(XFS_BUF_FSPRIVATE2(bp, xfs_trans_t *) == tp); ASSERT(XFS_BUF_FSPRIVATE(bp, void *) != NULL); ASSERT((XFS_BUF_ISERROR(bp)) == 0); |