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| author | Chao Yu <yuchao0@huawei.com> | 2017-10-28 11:52:33 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-11-06 03:41:57 +0300 |
| commit | a2a12b679f367014fa86d2cf3309e37c59e155c2 (patch) | |
| tree | 38a8e0344d3ae61e9129d907f2fb0e3259b0e994 | |
| parent | 0ea805129d1bc5dacb588392d191f686c91a70bb (diff) | |
| download | linux-a2a12b679f367014fa86d2cf3309e37c59e155c2.tar.xz | |
f2fs: export SSR allocation threshold
This patch exports min_ssr_segments threshold in sysfs to let user
control triggering SSR allocation flexibly.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 6 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 | ||||
| -rw-r--r-- | fs/f2fs/segment.c | 3 | ||||
| -rw-r--r-- | fs/f2fs/sysfs.c | 2 |
4 files changed, 12 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index fc1dff659df4..a7799c2fca28 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -57,6 +57,12 @@ Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: Controls the dirty page count condition for redefining hot data. +What: /sys/fs/f2fs/<disk>/min_ssr_sections +Date: October 2017 +Contact: "Chao Yu" <yuchao0@huawei.com> +Description: + Controls the fee section threshold to trigger SSR allocation. + What: /sys/fs/f2fs/<disk>/max_small_discards Date: November 2013 Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 2b9b1d8b3870..ee10c5206b2f 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -840,6 +840,7 @@ struct f2fs_sm_info { unsigned int min_ipu_util; /* in-place-update threshold */ unsigned int min_fsync_blocks; /* threshold for fsync */ unsigned int min_hot_blocks; /* threshold for hot block allocation */ + unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */ /* for flush command control */ struct flush_cmd_control *fcc_info; @@ -1077,6 +1078,7 @@ struct f2fs_sb_info { int active_logs; /* # of active logs */ int dir_level; /* directory level */ int inline_xattr_size; /* inline xattr size */ + unsigned int trigger_ssr_threshold; /* threshold to trigger ssr */ block_t user_block_count; /* # of user blocks */ block_t total_valid_block_count; /* # of valid blocks */ diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index d2b2351e7d9c..0de1761928d3 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -181,7 +181,7 @@ bool need_SSR(struct f2fs_sb_info *sbi) return true; return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs + - 2 * reserved_sections(sbi)); + SM_I(sbi)->min_ssr_sections + reserved_sections(sbi)); } void register_inmem_page(struct inode *inode, struct page *page) @@ -3671,6 +3671,7 @@ int build_segment_manager(struct f2fs_sb_info *sbi) sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS; + sm_info->min_ssr_sections = reserved_sections(sbi); sm_info->trim_sections = DEF_BATCHED_TRIM_SECTIONS; diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 4166ac74e837..f0fdc89ce82f 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -285,6 +285,7 @@ F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections); F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); @@ -330,6 +331,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(min_ipu_util), ATTR_LIST(min_fsync_blocks), ATTR_LIST(min_hot_blocks), + ATTR_LIST(min_ssr_sections), ATTR_LIST(max_victim_search), ATTR_LIST(dir_level), ATTR_LIST(ram_thresh), |