diff options
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 57 |
1 files changed, 48 insertions, 9 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index c14d5a12b908..427b75ed1e29 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2489,6 +2489,32 @@ int rw_hint_to_seg_type(enum rw_hint hint) * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM * WRITE_LIFE_LONG " WRITE_LIFE_LONG * + * 3) whint_mode=fs-based. F2FS passes down hints with its policy. + * + * User F2FS Block + * ---- ---- ----- + * META WRITE_LIFE_MEDIUM; + * HOT_NODE WRITE_LIFE_NOT_SET + * WARM_NODE " + * COLD_NODE WRITE_LIFE_NONE + * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME + * extension list " " + * + * -- buffered io + * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME + * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT + * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG + * WRITE_LIFE_NONE " " + * WRITE_LIFE_MEDIUM " " + * WRITE_LIFE_LONG " " + * + * -- direct io + * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME + * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT + * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET + * WRITE_LIFE_NONE " WRITE_LIFE_NONE + * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM + * WRITE_LIFE_LONG " WRITE_LIFE_LONG */ enum rw_hint io_type_to_rw_hint(struct f2fs_sb_info *sbi, @@ -2496,20 +2522,33 @@ enum rw_hint io_type_to_rw_hint(struct f2fs_sb_info *sbi, { if (sbi->whint_mode == WHINT_MODE_USER) { if (type == DATA) { - switch (temp) { - case COLD: - return WRITE_LIFE_EXTREME; - case HOT: - return WRITE_LIFE_SHORT; - default: + if (temp == WARM) return WRITE_LIFE_NOT_SET; - } + else if (temp == HOT) + return WRITE_LIFE_SHORT; + else if (temp == COLD) + return WRITE_LIFE_EXTREME; } else { return WRITE_LIFE_NOT_SET; } - } else { - return WRITE_LIFE_NOT_SET; + } else if (sbi->whint_mode == WHINT_MODE_FS) { + if (type == DATA) { + if (temp == WARM) + return WRITE_LIFE_LONG; + else if (temp == HOT) + return WRITE_LIFE_SHORT; + else if (temp == COLD) + return WRITE_LIFE_EXTREME; + } else if (type == NODE) { + if (temp == WARM || temp == HOT) + return WRITE_LIFE_NOT_SET; + else if (temp == COLD) + return WRITE_LIFE_NONE; + } else if (type == META) { + return WRITE_LIFE_MEDIUM; + } } + return WRITE_LIFE_NOT_SET; } static int __get_segment_type_2(struct f2fs_io_info *fio) |
