* [f2fs-dev] [PATCH] fsck.f2fs: Split build_segment_manager() to speed up auto-fix
@ 2020-07-08 4:35 Jaegeuk Kim
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From: Jaegeuk Kim @ 2020-07-08 4:35 UTC (permalink / raw)
To: linux-f2fs-devel; +Cc: Jaegeuk Kim
From: Robin Hsu <robinhsu@google.com>
Speed up fsck in auto-fix mode by splitting
build_segment_manager() into two disjoint parts:
early_build_segment_manager(), and
late_build_segment_manager(),
where in some cases (when !need_fsync_data_record(), or cannot
find_fsync_inode()), late_build_segment_manager() won't be needed in
auto-fix mode. This speeds up a little bit in those cases.
Signed-off-by: Robin Hsu <robinhsu@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fsck/f2fs.h | 3 +++
fsck/mount.c | 34 ++++++++++++++++++++++++++++++----
2 files changed, 33 insertions(+), 4 deletions(-)
diff --git a/fsck/f2fs.h b/fsck/f2fs.h
index 2a00d35..76e8272 100644
--- a/fsck/f2fs.h
+++ b/fsck/f2fs.h
@@ -273,6 +273,9 @@ struct f2fs_sb_info {
u32 free_segments;
int cp_backuped; /* backup valid checkpoint */
+
+ /* true if late_build_segment_manger() is called */
+ bool seg_manager_done;
};
static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
diff --git a/fsck/mount.c b/fsck/mount.c
index d0f2eab..e5fe734 100644
--- a/fsck/mount.c
+++ b/fsck/mount.c
@@ -2284,7 +2284,7 @@ static int build_sit_entries(struct f2fs_sb_info *sbi)
return 0;
}
-static int build_segment_manager(struct f2fs_sb_info *sbi)
+static int early_build_segment_manager(struct f2fs_sb_info *sbi)
{
struct f2fs_super_block *sb = F2FS_RAW_SUPER(sbi);
struct f2fs_checkpoint *cp = F2FS_CKPT(sbi);
@@ -2306,7 +2306,7 @@ static int build_segment_manager(struct f2fs_sb_info *sbi)
sm_info->main_segments = get_sb(segment_count_main);
sm_info->ssa_blkaddr = get_sb(ssa_blkaddr);
- if (build_sit_info(sbi) || build_curseg(sbi) || build_sit_entries(sbi)) {
+ if (build_sit_info(sbi) || build_curseg(sbi)) {
free(sm_info);
return -ENOMEM;
}
@@ -2314,6 +2314,20 @@ static int build_segment_manager(struct f2fs_sb_info *sbi)
return 0;
}
+static int late_build_segment_manager(struct f2fs_sb_info *sbi)
+{
+ if (sbi->seg_manager_done)
+ return 1; /* this function was already called */
+
+ sbi->seg_manager_done = true;
+ if (build_sit_entries(sbi)) {
+ free (sbi->sm_info);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
void build_sit_area_bitmap(struct f2fs_sb_info *sbi)
{
struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
@@ -3387,6 +3401,12 @@ static int record_fsync_data(struct f2fs_sb_info *sbi)
if (ret)
goto out;
+ ret = late_build_segment_manager(sbi);
+ if (ret < 0) {
+ ERR_MSG("late_build_segment_manager failed\n");
+ goto out;
+ }
+
ret = traverse_dnodes(sbi, &inode_list);
out:
destroy_fsync_dnodes(&inode_list);
@@ -3457,8 +3477,8 @@ int f2fs_do_mount(struct f2fs_sb_info *sbi)
sbi->last_valid_block_count = sbi->total_valid_block_count;
sbi->alloc_valid_block_count = 0;
- if (build_segment_manager(sbi)) {
- ERR_MSG("build_segment_manager failed\n");
+ if (early_build_segment_manager(sbi)) {
+ ERR_MSG("early_build_segment_manager failed\n");
return -1;
}
@@ -3475,6 +3495,12 @@ int f2fs_do_mount(struct f2fs_sb_info *sbi)
if (!f2fs_should_proceed(sb, get_cp(ckpt_flags)))
return 1;
+
+ if (late_build_segment_manager(sbi) < 0) {
+ ERR_MSG("late_build_segment_manager failed\n");
+ return -1;
+ }
+
if (f2fs_late_init_nid_bitmap(sbi)) {
ERR_MSG("f2fs_late_init_nid_bitmap failed\n");
return -1;
--
2.27.0.383.g050319c2ae-goog
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