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Date: Wed, 18 Nov 2020 07:39:17 -0800
From: Saranya Muruganandam <saranyamohan@...gle.com>
To: linux-ext4@...r.kernel.org, tytso@....edu
Cc: adilger.kernel@...ger.ca, Wang Shilong <wshilong@....com>,
Saranya Muruganandam <saranyamohan@...gle.com>
Subject: [RFC PATCH v3 31/61] e2fsck: split and merge invalid bitmaps
From: Wang Shilong <wshilong@....com>
Invalid bitmaps are splitted per thread, and we
should merge them after thread finish.
Signed-off-by: Wang Shilong <wshilong@....com>
Signed-off-by: Saranya Muruganandam <saranyamohan@...gle.com>
---
e2fsck/pass1.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/e2fsck/pass1.c b/e2fsck/pass1.c
index 49bdba21..29954e88 100644
--- a/e2fsck/pass1.c
+++ b/e2fsck/pass1.c
@@ -2379,6 +2379,62 @@ out:
return retval;
}
+static void e2fsck_pass1_copy_invalid_bitmaps(e2fsck_t global_ctx,
+ e2fsck_t thread_ctx)
+{
+ dgrp_t i, j;
+ dgrp_t grp_start = thread_ctx->thread_info.et_group_start;
+ dgrp_t grp_end = thread_ctx->thread_info.et_group_end;
+ dgrp_t total = grp_end - grp_start;
+
+ thread_ctx->invalid_inode_bitmap_flag =
+ e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
+ "invalid_inode_bitmap");
+ thread_ctx->invalid_block_bitmap_flag =
+ e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
+ "invalid_block_bitmap");
+ thread_ctx->invalid_inode_table_flag =
+ e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
+ "invalid_inode_table");
+
+ memcpy(thread_ctx->invalid_block_bitmap_flag,
+ &global_ctx->invalid_block_bitmap_flag[grp_start],
+ total * sizeof(int));
+ memcpy(thread_ctx->invalid_inode_bitmap_flag,
+ &global_ctx->invalid_inode_bitmap_flag[grp_start],
+ total * sizeof(int));
+ memcpy(thread_ctx->invalid_inode_table_flag,
+ &global_ctx->invalid_inode_table_flag[grp_start],
+ total * sizeof(int));
+
+ thread_ctx->invalid_bitmaps = 0;
+ for (i = grp_start, j = 0; i < grp_end; i++, j++) {
+ if (thread_ctx->invalid_block_bitmap_flag[j])
+ thread_ctx->invalid_bitmaps++;
+ if (thread_ctx->invalid_inode_bitmap_flag[j])
+ thread_ctx->invalid_bitmaps++;
+ if (thread_ctx->invalid_inode_table_flag[j])
+ thread_ctx->invalid_bitmaps++;
+ }
+}
+
+static void e2fsck_pass1_merge_invalid_bitmaps(e2fsck_t global_ctx,
+ e2fsck_t thread_ctx)
+{
+ dgrp_t i, j;
+ dgrp_t grp_start = thread_ctx->thread_info.et_group_start;
+ dgrp_t grp_end = thread_ctx->thread_info.et_group_end;
+ dgrp_t total = grp_end - grp_start;
+
+ memcpy(&global_ctx->invalid_block_bitmap_flag[grp_start],
+ thread_ctx->invalid_block_bitmap_flag, total * sizeof(int));
+ memcpy(&global_ctx->invalid_inode_bitmap_flag[grp_start],
+ thread_ctx->invalid_inode_bitmap_flag, total * sizeof(int));
+ memcpy(&global_ctx->invalid_inode_table_flag[grp_start],
+ thread_ctx->invalid_inode_table_flag, total * sizeof(int));
+ global_ctx->invalid_bitmaps += thread_ctx->invalid_bitmaps;
+}
+
static errcode_t e2fsck_pass1_thread_prepare(e2fsck_t global_ctx, e2fsck_t *thread_ctx,
int thread_index, int num_threads)
{
@@ -2455,6 +2511,7 @@ static errcode_t e2fsck_pass1_thread_prepare(e2fsck_t global_ctx, e2fsck_t *thre
goto out_fs;
}
*thread_ctx = thread_context;
+ e2fsck_pass1_copy_invalid_bitmaps(global_ctx, thread_context);
return 0;
out_fs:
ext2fs_free_mem(&thread_fs);
@@ -2589,6 +2646,10 @@ static int e2fsck_pass1_thread_join_one(e2fsck_t global_ctx, e2fsck_t thread_ctx
ext2_ino_t dx_dir_info_count = global_ctx->dx_dir_info_count;
ext2_u32_list dirs_to_hash = global_ctx->dirs_to_hash;
quota_ctx_t qctx = global_ctx->qctx;
+ int *invalid_block_bitmap_flag = global_ctx->invalid_block_bitmap_flag;
+ int *invalid_inode_bitmap_flag = global_ctx->invalid_inode_bitmap_flag;
+ int *invalid_inode_table_flag = global_ctx->invalid_inode_table_flag;
+ int invalid_bitmaps = global_ctx->invalid_bitmaps;
#ifdef HAVE_SETJMP_H
jmp_buf old_jmp;
@@ -2667,6 +2728,11 @@ static int e2fsck_pass1_thread_join_one(e2fsck_t global_ctx, e2fsck_t thread_ctx
thread_ctx->qctx);
if (retval)
return retval;
+ global_ctx->invalid_block_bitmap_flag = invalid_block_bitmap_flag;
+ global_ctx->invalid_inode_bitmap_flag = invalid_inode_bitmap_flag;
+ global_ctx->invalid_inode_table_flag = invalid_inode_table_flag;
+ global_ctx->invalid_bitmaps = invalid_bitmaps;
+ e2fsck_pass1_merge_invalid_bitmaps(global_ctx, thread_ctx);
retval = e2fsck_pass1_merge_bitmap(global_fs,
&thread_ctx->inode_used_map,
@@ -2739,6 +2805,9 @@ static int e2fsck_pass1_thread_join(e2fsck_t global_ctx, e2fsck_t thread_ctx)
if (thread_ctx->dirs_to_hash)
ext2fs_badblocks_list_free(thread_ctx->dirs_to_hash);
quota_release_context(&thread_ctx->qctx);
+ ext2fs_free_mem(&thread_ctx->invalid_block_bitmap_flag);
+ ext2fs_free_mem(&thread_ctx->invalid_inode_bitmap_flag);
+ ext2fs_free_mem(&thread_ctx->invalid_inode_table_flag);
ext2fs_free_mem(&thread_ctx);
return retval;
@@ -2752,6 +2821,8 @@ static int e2fsck_pass1_threads_join(struct e2fsck_thread_info *infos,
int i;
struct e2fsck_thread_info *pinfo;
+ /* merge invalid bitmaps will recalculate it */
+ global_ctx->invalid_bitmaps = 0;
for (i = 0; i < num_threads; i++) {
pinfo = &infos[i];
--
2.29.2.299.gdc1121823c-goog
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