diff options
Diffstat (limited to 'fs/xfs/xfs_buf.c')
-rw-r--r-- | fs/xfs/xfs_buf.c | 50 |
1 files changed, 32 insertions, 18 deletions
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 8ecffb35935b..9a2191b91137 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -201,7 +201,7 @@ _xfs_buf_alloc( atomic_set(&bp->b_pin_count, 0); init_waitqueue_head(&bp->b_waiters); - XFS_STATS_INC(xb_create); + XFS_STATS_INC(target->bt_mount, xb_create); trace_xfs_buf_init(bp, _RET_IP_); return bp; @@ -354,15 +354,16 @@ retry: */ if (!(++retries % 100)) xfs_err(NULL, - "possible memory allocation deadlock in %s (mode:0x%x)", + "%s(%u) possible memory allocation deadlock in %s (mode:0x%x)", + current->comm, current->pid, __func__, gfp_mask); - XFS_STATS_INC(xb_page_retries); + XFS_STATS_INC(bp->b_target->bt_mount, xb_page_retries); congestion_wait(BLK_RW_ASYNC, HZ/50); goto retry; } - XFS_STATS_INC(xb_page_found); + XFS_STATS_INC(bp->b_target->bt_mount, xb_page_found); nbytes = min_t(size_t, size, PAGE_SIZE - offset); size -= nbytes; @@ -516,7 +517,7 @@ _xfs_buf_find( new_bp->b_pag = pag; spin_unlock(&pag->pag_buf_lock); } else { - XFS_STATS_INC(xb_miss_locked); + XFS_STATS_INC(btp->bt_mount, xb_miss_locked); spin_unlock(&pag->pag_buf_lock); xfs_perag_put(pag); } @@ -529,11 +530,11 @@ found: if (!xfs_buf_trylock(bp)) { if (flags & XBF_TRYLOCK) { xfs_buf_rele(bp); - XFS_STATS_INC(xb_busy_locked); + XFS_STATS_INC(btp->bt_mount, xb_busy_locked); return NULL; } xfs_buf_lock(bp); - XFS_STATS_INC(xb_get_locked_waited); + XFS_STATS_INC(btp->bt_mount, xb_get_locked_waited); } /* @@ -549,7 +550,7 @@ found: } trace_xfs_buf_find(bp, flags, _RET_IP_); - XFS_STATS_INC(xb_get_locked); + XFS_STATS_INC(btp->bt_mount, xb_get_locked); return bp; } @@ -603,7 +604,14 @@ found: } } - XFS_STATS_INC(xb_get); + /* + * Clear b_error if this is a lookup from a caller that doesn't expect + * valid data to be found in the buffer. + */ + if (!(flags & XBF_READ)) + xfs_buf_ioerror(bp, 0); + + XFS_STATS_INC(target->bt_mount, xb_get); trace_xfs_buf_get(bp, flags, _RET_IP_); return bp; } @@ -642,8 +650,8 @@ xfs_buf_read_map( if (bp) { trace_xfs_buf_read(bp, flags, _RET_IP_); - if (!XFS_BUF_ISDONE(bp)) { - XFS_STATS_INC(xb_get_read); + if (!(bp->b_flags & XBF_DONE)) { + XFS_STATS_INC(target->bt_mount, xb_get_read); bp->b_ops = ops; _xfs_buf_read(bp, flags); } else if (flags & XBF_ASYNC) { @@ -1044,7 +1052,7 @@ xfs_buf_ioend_work( xfs_buf_ioend(bp); } -void +static void xfs_buf_ioend_async( struct xfs_buf *bp) { @@ -1519,6 +1527,16 @@ xfs_wait_buftarg( LIST_HEAD(dispose); int loop = 0; + /* + * We need to flush the buffer workqueue to ensure that all IO + * completion processing is 100% done. Just waiting on buffer locks is + * not sufficient for async IO as the reference count held over IO is + * not released until after the buffer lock is dropped. Hence we need to + * ensure here that all reference counts have been dropped before we + * start walking the LRU list. + */ + drain_workqueue(btp->bt_mount->m_buf_workqueue); + /* loop until there is nothing left on the lru list. */ while (list_lru_count(&btp->bt_lru)) { list_lru_walk(&btp->bt_lru, xfs_buftarg_wait_rele, @@ -1631,13 +1649,9 @@ xfs_setsize_buftarg( btp->bt_meta_sectormask = sectorsize - 1; if (set_blocksize(btp->bt_bdev, sectorsize)) { - char name[BDEVNAME_SIZE]; - - bdevname(btp->bt_bdev, name); - xfs_warn(btp->bt_mount, - "Cannot set_blocksize to %u on device %s", - sectorsize, name); + "Cannot set_blocksize to %u on device %pg", + sectorsize, btp->bt_bdev); return -EINVAL; } |