From b79b0a310bca6dbe86d8adc1ca6a88e818bc1f19 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Mon, 29 Jun 2020 20:13:12 +0800 Subject: [PATCH] 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: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/data.c | 14 +++++++++++--- include/trace/events/f2fs.h | 26 ++++++++++++++++++++++++++ 2 files changed, 37 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 91dc7b598961..c07a50e4d967 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -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 diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index 8639ab962a71..2e8713a52d76 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -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 */