iomap: add pos and dirty_len into trace_iomap_writepage_map
Since commit fd07e0aa23c4 ("iomap: map multiple blocks at a time"), we could map multi-blocks once a time, and the dirty_len indicates the expected map length, map_len won't large than it. The pos and dirty_len means the dirty range that should be mapped to write, add them into trace_iomap_writepage_map() could be more useful for debug. Signed-off-by: Zhang Yi <yi.zhang@huawei.com> Link: https://lore.kernel.org/r/20240220115759.3445025-1-yi.zhang@huaweicloud.com Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
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@ -1776,7 +1776,7 @@ static int iomap_writepage_map_blocks(struct iomap_writepage_ctx *wpc,
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error = wpc->ops->map_blocks(wpc, inode, pos, dirty_len);
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if (error)
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break;
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trace_iomap_writepage_map(inode, &wpc->iomap);
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trace_iomap_writepage_map(inode, pos, dirty_len, &wpc->iomap);
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map_len = min_t(u64, dirty_len,
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wpc->iomap.offset + wpc->iomap.length - pos);
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@ -154,7 +154,48 @@ DEFINE_EVENT(iomap_class, name, \
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TP_ARGS(inode, iomap))
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DEFINE_IOMAP_EVENT(iomap_iter_dstmap);
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DEFINE_IOMAP_EVENT(iomap_iter_srcmap);
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DEFINE_IOMAP_EVENT(iomap_writepage_map);
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TRACE_EVENT(iomap_writepage_map,
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TP_PROTO(struct inode *inode, u64 pos, unsigned int dirty_len,
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struct iomap *iomap),
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TP_ARGS(inode, pos, dirty_len, iomap),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(u64, ino)
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__field(u64, pos)
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__field(u64, dirty_len)
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__field(u64, addr)
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__field(loff_t, offset)
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__field(u64, length)
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__field(u16, type)
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__field(u16, flags)
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__field(dev_t, bdev)
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),
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TP_fast_assign(
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__entry->dev = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->pos = pos;
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__entry->dirty_len = dirty_len;
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__entry->addr = iomap->addr;
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__entry->offset = iomap->offset;
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__entry->length = iomap->length;
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__entry->type = iomap->type;
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__entry->flags = iomap->flags;
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__entry->bdev = iomap->bdev ? iomap->bdev->bd_dev : 0;
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),
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TP_printk("dev %d:%d ino 0x%llx bdev %d:%d pos 0x%llx dirty len 0x%llx "
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"addr 0x%llx offset 0x%llx length 0x%llx type %s flags %s",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->ino,
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MAJOR(__entry->bdev), MINOR(__entry->bdev),
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__entry->pos,
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__entry->dirty_len,
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__entry->addr,
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__entry->offset,
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__entry->length,
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__print_symbolic(__entry->type, IOMAP_TYPE_STRINGS),
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__print_flags(__entry->flags, "|", IOMAP_F_FLAGS_STRINGS))
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);
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TRACE_EVENT(iomap_iter,
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TP_PROTO(struct iomap_iter *iter, const void *ops,
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