From 51dd62493477923723c797c6da60121ed39900ed Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Sat, 20 Apr 2013 01:28:52 +0900 Subject: f2fs: add tracepoints for truncate operation add tracepoints for tracing the truncate operations like truncate node/data blocks, f2fs_truncate etc. Tracepoints are added at entry and exit of operation to trace the success & failure of operation. Signed-off-by: Namjae Jeon Signed-off-by: Pankaj Kumar Acked-by: Steven Rostedt [Jaegeuk: combine and modify the tracepoint structures] Signed-off-by: Jaegeuk Kim --- fs/f2fs/file.c | 9 +++++++++ fs/f2fs/node.c | 20 ++++++++++++++++++-- 2 files changed, 27 insertions(+), 2 deletions(-) (limited to 'fs/f2fs') diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 0b0ba26ba76e..71efa373cc45 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -193,6 +193,9 @@ static int truncate_data_blocks_range(struct dnode_of_data *dn, int count) sync_inode_page(dn); } dn->ofs_in_node = ofs; + + trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, + dn->ofs_in_node, nr_free); return nr_free; } @@ -229,6 +232,8 @@ static int truncate_blocks(struct inode *inode, u64 from) int count = 0, ilock = -1; int err; + trace_f2fs_truncate_blocks_enter(inode, from); + free_from = (pgoff_t) ((from + blocksize - 1) >> (sbi->log_blocksize)); @@ -239,6 +244,7 @@ static int truncate_blocks(struct inode *inode, u64 from) if (err == -ENOENT) goto free_next; mutex_unlock_op(sbi, ilock); + trace_f2fs_truncate_blocks_exit(inode, err); return err; } @@ -263,6 +269,7 @@ free_next: /* lastly zero out the first data page */ truncate_partial_data_page(inode, from); + trace_f2fs_truncate_blocks_exit(inode, err); return err; } @@ -272,6 +279,8 @@ void f2fs_truncate(struct inode *inode) S_ISLNK(inode->i_mode))) return; + trace_f2fs_truncate(inode); + if (!truncate_blocks(inode, i_size_read(inode))) { inode->i_mtime = inode->i_ctime = CURRENT_TIME; mark_inode_dirty(inode); diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 5a7edf90ca45..5a825502b0b0 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -19,6 +19,7 @@ #include "f2fs.h" #include "node.h" #include "segment.h" +#include static struct kmem_cache *nat_entry_slab; static struct kmem_cache *free_nid_slab; @@ -508,6 +509,7 @@ invalidate: f2fs_put_page(dn->node_page, 1); dn->node_page = NULL; + trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); } static int truncate_dnode(struct dnode_of_data *dn) @@ -548,9 +550,13 @@ static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, if (dn->nid == 0) return NIDS_PER_BLOCK + 1; + trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); + page = get_node_page(sbi, dn->nid); - if (IS_ERR(page)) + if (IS_ERR(page)) { + trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); return PTR_ERR(page); + } rn = (struct f2fs_node *)page_address(page); if (depth < 3) { @@ -592,10 +598,12 @@ static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, } else { f2fs_put_page(page, 1); } + trace_f2fs_truncate_nodes_exit(dn->inode, freed); return freed; out_err: f2fs_put_page(page, 1); + trace_f2fs_truncate_nodes_exit(dn->inode, ret); return ret; } @@ -650,6 +658,9 @@ static int truncate_partial_nodes(struct dnode_of_data *dn, fail: for (i = depth - 3; i >= 0; i--) f2fs_put_page(pages[i], 1); + + trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); + return err; } @@ -666,11 +677,15 @@ int truncate_inode_blocks(struct inode *inode, pgoff_t from) struct dnode_of_data dn; struct page *page; + trace_f2fs_truncate_inode_blocks_enter(inode, from); + level = get_node_path(from, offset, noffset); page = get_node_page(sbi, inode->i_ino); - if (IS_ERR(page)) + if (IS_ERR(page)) { + trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); return PTR_ERR(page); + } set_new_dnode(&dn, inode, page, NULL, 0); unlock_page(page); @@ -740,6 +755,7 @@ skip_partial: } fail: f2fs_put_page(page, 0); + trace_f2fs_truncate_inode_blocks_exit(inode, err); return err > 0 ? 0 : err; } -- cgit v1.2.3