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ext4: call ext4_mb_mark_context in ext4_group_add_blocks() 

Call ext4_mb_mark_context in ext4_group_add_blocks() to remove repeat code.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20230928160407.142069-10-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Kemeng Shi 2023-09-29 00:04:04 +08:00 committed by Theodore Ts'o
parent 03c7fc39a6
commit 5c657db46d
1 changed files with 10 additions and 72 deletions
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82
fs/ext4/mballoc.c
View File

@ -6622,23 +6622,19 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
int ext4_group_add_blocks(handle_t *handle, struct super_block *sb,
ext4_fsblk_t block, unsigned long count)
{
struct buffer_head *bitmap_bh = NULL;
struct buffer_head *gd_bh;
ext4_group_t block_group;
ext4_grpblk_t bit;
unsigned int i;
struct ext4_group_desc *desc;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_buddy e4b;
int err = 0, ret, free_clusters_count;
ext4_grpblk_t clusters_freed;
int err = 0;
ext4_fsblk_t first_cluster = EXT4_B2C(sbi, block);
ext4_fsblk_t last_cluster = EXT4_B2C(sbi, block + count - 1);
unsigned long cluster_count = last_cluster - first_cluster + 1;
ext4_grpblk_t changed;
ext4_debug("Adding block(s) %llu-%llu\n", block, block + count - 1);
if (count == 0)
if (cluster_count == 0)
return 0;
ext4_get_group_no_and_offset(sb, block, &block_group, &bit);
@ -6665,80 +6661,22 @@ int ext4_group_add_blocks(handle_t *handle, struct super_block *sb,
goto error_clean;
}
bitmap_bh = ext4_read_block_bitmap(sb, block_group);
if (IS_ERR(bitmap_bh)) {
err = PTR_ERR(bitmap_bh);
bitmap_bh = NULL;
goto error_clean;
}
desc = ext4_get_group_desc(sb, block_group, &gd_bh);
if (!desc) {
err = -EIO;
goto error_clean;
}
BUFFER_TRACE(bitmap_bh, "getting write access");
err = ext4_journal_get_write_access(handle, sb, bitmap_bh,
EXT4_JTR_NONE);
if (err)
err = ext4_mb_mark_context(handle, sb, false, block_group, bit,
cluster_count, EXT4_MB_BITMAP_MARKED_CHECK,
&changed);
if (err && changed == 0)
goto error_clean;
/*
* We are about to modify some metadata. Call the journal APIs
* to unshare ->b_data if a currently-committing transaction is
* using it
*/
BUFFER_TRACE(gd_bh, "get_write_access");
err = ext4_journal_get_write_access(handle, sb, gd_bh, EXT4_JTR_NONE);
if (err)
goto error_clean;
for (i = 0, clusters_freed = 0; i < cluster_count; i++) {
BUFFER_TRACE(bitmap_bh, "clear bit");
if (!mb_test_bit(bit + i, bitmap_bh->b_data)) {
ext4_error(sb, "bit already cleared for block %llu",
(ext4_fsblk_t)(block + i));
BUFFER_TRACE(bitmap_bh, "bit already cleared");
} else {
clusters_freed++;
}
}
ext4_lock_group(sb, block_group);
mb_clear_bits(bitmap_bh->b_data, bit, cluster_count);
free_clusters_count = clusters_freed +
ext4_free_group_clusters(sb, desc);
ext4_free_group_clusters_set(sb, desc, free_clusters_count);
ext4_block_bitmap_csum_set(sb, desc, bitmap_bh);
ext4_group_desc_csum_set(sb, block_group, desc);
ext4_unlock_group(sb, block_group);
if (sbi->s_log_groups_per_flex) {
ext4_group_t flex_group = ext4_flex_group(sbi, block_group);
atomic64_add(clusters_freed,
&sbi_array_rcu_deref(sbi, s_flex_groups,
flex_group)->free_clusters);
}
/* We dirtied the bitmap block */
BUFFER_TRACE(bitmap_bh, "dirtied bitmap block");
err = ext4_handle_dirty_metadata(handle, NULL, bitmap_bh);
/* And the group descriptor block */
BUFFER_TRACE(gd_bh, "dirtied group descriptor block");
ret = ext4_handle_dirty_metadata(handle, NULL, gd_bh);
if (!err)
err = ret;
if (changed != cluster_count)
ext4_error(sb, "bit already cleared in group %u", block_group);
ext4_lock_group(sb, block_group);
mb_free_blocks(NULL, &e4b, bit, cluster_count);
ext4_unlock_group(sb, block_group);
percpu_counter_add(&sbi->s_freeclusters_counter,
clusters_freed);
changed);
error_clean:
brelse(bitmap_bh);
ext4_mb_unload_buddy(&e4b);
error_out:
ext4_std_error(sb, err);