Commit b79b0a31 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: support to trace f2fs_bmap() 



to show f2fs_bmap()'s result as below:

f2fs_bmap: dev = (251,0), ino = 7, lblock:0, pblock:396800

Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 250e84d7

fs/f2fs/data.c

+11 −3
Original line number Diff line number Diff line
@@ -3713,18 +3713,26 @@ static sector_t f2fs_bmap_compress(struct inode *inode, sector_t block) 
static sector_t f2fs_bmap(struct address_space *mapping, sector_t block)

{

	struct inode *inode = mapping->host;

	struct buffer_head tmp = {

		.b_size = i_blocksize(inode),

	};

	sector_t blknr = 0;



	if (f2fs_has_inline_data(inode))

		return 0;

		goto out;



	/* make sure allocating whole blocks */

	if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY))

		filemap_write_and_wait(mapping);



	if (f2fs_compressed_file(inode))

		return f2fs_bmap_compress(inode, block);

		blknr = f2fs_bmap_compress(inode, block);



	return generic_block_bmap(mapping, block, get_data_block_bmap);

	if (!get_data_block_bmap(inode, block, &tmp, 0))

		blknr = tmp.b_blocknr;

out:

	trace_f2fs_bmap(inode, block, blknr);

	return blknr;

}



#ifdef CONFIG_MIGRATION

include/trace/events/f2fs.h

+26 −0
Original line number Diff line number Diff line
@@ -1891,6 +1891,32 @@ TRACE_EVENT(f2fs_iostat, 
		__entry->fs_cdrio, __entry->fs_nrio, __entry->fs_mrio)

);



TRACE_EVENT(f2fs_bmap,



	TP_PROTO(struct inode *inode, sector_t lblock, sector_t pblock),



	TP_ARGS(inode, lblock, pblock),



	TP_STRUCT__entry(

		__field(dev_t, dev)

		__field(ino_t, ino)

		__field(sector_t, lblock)

		__field(sector_t, pblock)

	),



	TP_fast_assign(

		__entry->dev		= inode->i_sb->s_dev;

		__entry->ino		= inode->i_ino;

		__entry->lblock		= lblock;

		__entry->pblock		= pblock;

	),



	TP_printk("dev = (%d,%d), ino = %lu, lblock:%lld, pblock:%lld",

		show_dev_ino(__entry),

		(unsigned long long)__entry->lblock,

		(unsigned long long)__entry->pblock)

);



#endif /* _TRACE_F2FS_H */



 /* This part must be outside protection */