f2fs: add a tracepoint for f2fs_write_begin
This patch adds a tracepoint for f2fs_write_begin to trace write op of user. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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@ -900,6 +900,8 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping,
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struct dnode_of_data dn;
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int err = 0;
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trace_f2fs_write_begin(inode, pos, len, flags);
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f2fs_balance_fs(sbi);
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repeat:
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err = f2fs_convert_inline_data(inode, pos + len);
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@ -659,6 +659,36 @@ DEFINE_EVENT_CONDITION(f2fs__submit_bio, f2fs_submit_read_bio,
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TP_CONDITION(bio)
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);
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TRACE_EVENT(f2fs_write_begin,
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TP_PROTO(struct inode *inode, loff_t pos, unsigned int len,
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unsigned int flags),
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TP_ARGS(inode, pos, len, flags),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(ino_t, ino)
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__field(loff_t, pos)
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__field(unsigned int, len)
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__field(unsigned int, flags)
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),
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TP_fast_assign(
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__entry->dev = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->pos = pos;
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__entry->len = len;
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__entry->flags = flags;
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),
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TP_printk("dev = (%d,%d), ino = %lu, pos = %llu, len = %u, flags = %u",
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show_dev_ino(__entry),
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(unsigned long long)__entry->pos,
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__entry->len,
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__entry->flags)
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);
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DECLARE_EVENT_CLASS(f2fs__page,
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TP_PROTO(struct page *page, int type),
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