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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
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@@ -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