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f2fs: support to trace f2fs_bmap()

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to show f2fs_bmap()'s result as below:

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

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2020-06-29 20:13:12 +08:00
committed by Jaegeuk Kim
parent 250e84d725
commit b79b0a310b
2 changed files with 37 additions and 3 deletions
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14
fs/f2fs/data.c
View File

@@ -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) static sector_t f2fs_bmap(struct address_space *mapping, sector_t block)
{ {
struct inode *inode = mapping->host; struct inode *inode = mapping->host;
struct buffer_head tmp = {
.b_size = i_blocksize(inode),
};
sector_t blknr = 0;
if (f2fs_has_inline_data(inode)) if (f2fs_has_inline_data(inode))
return 0; goto out;
/* make sure allocating whole blocks */ /* make sure allocating whole blocks */
if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY))
filemap_write_and_wait(mapping); filemap_write_and_wait(mapping);
if (f2fs_compressed_file(inode)) 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 #ifdef CONFIG_MIGRATION

26
include/trace/events/f2fs.h
View File

@@ -1891,6 +1891,32 @@ TRACE_EVENT(f2fs_iostat,
__entry->fs_cdrio, __entry->fs_nrio, __entry->fs_mrio) __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 */ #endif /* _TRACE_F2FS_H */
/* This part must be outside protection */ /* This part must be outside protection */