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| author | Changman Lee <cm224.lee@samsung.com> | 2013-10-25 10:31:57 +0200 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-10-28 05:38:16 +0100 |
| commit | 4625d6aac2d00a18f7bcc15bffe41e9de3a25332 (patch) | |
| tree | 48843832b9a1b2e17e9962d0873d0be10c1be3cb /fs/f2fs | |
| parent | f2fs: add tracepoint for vm_page_mkwrite (diff) | |
| download | linux-4625d6aac2d00a18f7bcc15bffe41e9de3a25332.tar.xz linux-4625d6aac2d00a18f7bcc15bffe41e9de3a25332.zip | |
f2fs: remove unnecessary segment bitmap updates
Only one dirty type is set in __locate_dirty_segment and we can know
dirty type of segment. So we don't need to check other dirty types.
Signed-off-by: Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/segment.c | 31 |
1 files changed, 8 insertions, 23 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 487af619aeda..8f92c18a01fb 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -58,20 +58,10 @@ static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, if (dirty_type == DIRTY) { struct seg_entry *sentry = get_seg_entry(sbi, segno); - enum dirty_type t = DIRTY_HOT_DATA; + enum dirty_type t = sentry->type; - dirty_type = sentry->type; - - if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) - dirty_i->nr_dirty[dirty_type]++; - - /* Only one bitmap should be set */ - for (; t <= DIRTY_COLD_NODE; t++) { - if (t == dirty_type) - continue; - if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) - dirty_i->nr_dirty[t]--; - } + if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) + dirty_i->nr_dirty[t]++; } } @@ -84,16 +74,11 @@ static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, dirty_i->nr_dirty[dirty_type]--; if (dirty_type == DIRTY) { - enum dirty_type t = DIRTY_HOT_DATA; - - /* clear its dirty bitmap */ - for (; t <= DIRTY_COLD_NODE; t++) { - if (test_and_clear_bit(segno, - dirty_i->dirty_segmap[t])) { - dirty_i->nr_dirty[t]--; - break; - } - } + struct seg_entry *sentry = get_seg_entry(sbi, segno); + enum dirty_type t = sentry->type; + + if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) + dirty_i->nr_dirty[t]--; if (get_valid_blocks(sbi, segno, sbi->segs_per_sec) == 0) clear_bit(GET_SECNO(sbi, segno), |