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Commit 8ce67cb0 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: add some tracepoints to debug volatile and atomic writes 



Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 3c6c2beb

fs/f2fs/data.c

+2 −0
Original line number Diff line number Diff line
@@ -1287,9 +1287,11 @@ int do_write_data_page(struct page *page, struct f2fs_io_info *fio) 
			need_inplace_update(inode))) {

		rewrite_data_page(page, fio);

		set_inode_flag(F2FS_I(inode), FI_UPDATE_WRITE);

		trace_f2fs_do_write_data_page(page, IPU);

	} else {

		write_data_page(page, &dn, fio);

		f2fs_update_extent_cache(&dn);

		trace_f2fs_do_write_data_page(page, OPU);

		set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE);

		if (page->index == 0)

			set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);

fs/f2fs/f2fs.h

+4 −0
Original line number Diff line number Diff line
@@ -556,6 +556,10 @@ enum page_type { 
	META,

	NR_PAGE_TYPE,

	META_FLUSH,

	INMEM,		/* the below types are used by tracepoints only. */

	INMEM_DROP,

	IPU,

	OPU,

};



struct f2fs_io_info {

fs/f2fs/segment.c

+4 −0
Original line number Diff line number Diff line
@@ -205,6 +205,8 @@ void register_inmem_page(struct inode *inode, struct page *page) 
	list_add_tail(&new->list, &fi->inmem_pages);

	inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);

	mutex_unlock(&fi->inmem_lock);



	trace_f2fs_register_inmem_page(page, INMEM);

}



void commit_inmem_pages(struct inode *inode, bool abort)
@@ -238,11 +240,13 @@ void commit_inmem_pages(struct inode *inode, bool abort) 
				f2fs_wait_on_page_writeback(cur->page, DATA);

				if (clear_page_dirty_for_io(cur->page))

					inode_dec_dirty_pages(inode);

				trace_f2fs_commit_inmem_page(cur->page, INMEM);

				do_write_data_page(cur->page, &fio);

				submit_bio = true;

			}

			f2fs_put_page(cur->page, 1);

		} else {

			trace_f2fs_commit_inmem_page(cur->page, INMEM_DROP);

			put_page(cur->page);

		}

		radix_tree_delete(&fi->inmem_root, cur->page->index);

include/trace/events/f2fs.h

+26 −1
Original line number Diff line number Diff line
@@ -14,7 +14,11 @@ 
		{ NODE,		"NODE" },				\

		{ DATA,		"DATA" },				\

		{ META,		"META" },				\

		{ META_FLUSH,	"META_FLUSH" })

		{ META_FLUSH,	"META_FLUSH" },				\

		{ INMEM,	"INMEM" },				\

		{ INMEM_DROP,	"INMEM_DROP" },				\

		{ IPU,		"IN-PLACE" },				\

		{ OPU,		"OUT-OF-PLACE" })



#define F2FS_BIO_MASK(t)	(t & (READA | WRITE_FLUSH_FUA))

#define F2FS_BIO_EXTRA_MASK(t)	(t & (REQ_META | REQ_PRIO))
@@ -854,6 +858,13 @@ DEFINE_EVENT(f2fs__page, f2fs_writepage, 
	TP_ARGS(page, type)

);



DEFINE_EVENT(f2fs__page, f2fs_do_write_data_page,



	TP_PROTO(struct page *page, int type),



	TP_ARGS(page, type)

);



DEFINE_EVENT(f2fs__page, f2fs_readpage,



	TP_PROTO(struct page *page, int type),
@@ -875,6 +886,20 @@ DEFINE_EVENT(f2fs__page, f2fs_vm_page_mkwrite, 
	TP_ARGS(page, type)

);



DEFINE_EVENT(f2fs__page, f2fs_register_inmem_page,



	TP_PROTO(struct page *page, int type),



	TP_ARGS(page, type)

);



DEFINE_EVENT(f2fs__page, f2fs_commit_inmem_page,



	TP_PROTO(struct page *page, int type),



	TP_ARGS(page, type)

);



TRACE_EVENT(f2fs_writepages,



	TP_PROTO(struct inode *inode, struct writeback_control *wbc, int type),