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f2fs: add a tracepoint for f2fs_write_{meta,node,data}_pages

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This patch adds a tracepoint for f2fs_write_{meta,node,data}_pages to trace when
pages are fsyncing/flushing.

Signed-off-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
This commit is contained in:
Chao Yu 2014-05-06 16:51:24 +08:00 • committed by Jaegeuk Kim
commit e574843438
4 changed files with 70 additions and 0 deletions
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2
fs/f2fs/checkpoint.c
View file

@ -186,6 +186,8 @@ static int f2fs_write_meta_pages(struct address_space *mapping,
struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb);
long diff, written;
trace_f2fs_writepages(mapping->host, wbc, META);
/* collect a number of dirty meta pages and write together */
if (wbc->for_kupdate ||
get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META))

2
fs/f2fs/data.c
View file

@ -860,6 +860,8 @@ static int f2fs_write_data_pages(struct address_space *mapping,
int ret;
long diff;
trace_f2fs_writepages(mapping->host, wbc, DATA);
/* deal with chardevs and other special file */
if (!mapping->a_ops->writepage)
return 0;

2
fs/f2fs/node.c
View file

@ -1242,6 +1242,8 @@ static int f2fs_write_node_pages(struct address_space *mapping,
struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb);
long diff;
trace_f2fs_writepages(mapping->host, wbc, NODE);
/* balancing f2fs's metadata in background */
f2fs_balance_fs_bg(sbi);