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f2fs: add tracepoint for f2fs_direct_IO

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This patch adds a tracepoint for f2fs_direct_IO.

Signed-off-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
This commit is contained in:
Chao Yu 2014-07-31 21:11:22 +08:00 • committed by Jaegeuk Kim
commit 70407fad85
2 changed files with 68 additions and 0 deletions
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5
fs/f2fs/data.c
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@ -1086,9 +1086,14 @@ static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb,
/* clear fsync mark to recover these blocks */
fsync_mark_clear(F2FS_SB(inode->i_sb), inode->i_ino);
trace_f2fs_direct_IO_enter(inode, offset, count, rw);
err = blockdev_direct_IO(rw, iocb, inode, iter, offset, get_data_block);
if (err < 0 && (rw & WRITE))
f2fs_write_failed(mapping, offset + count);
trace_f2fs_direct_IO_exit(inode, offset, count, rw, err);
return err;
}