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Diffstat (limited to 'fs/ext4/mballoc.c')
-rw-r--r--fs/ext4/mballoc.c69
1 files changed, 10 insertions, 59 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 124bc5a90e79..d90fb5660429 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -6367,19 +6367,17 @@ static void ext4_mb_clear_bb(handle_t *handle, struct inode *inode,
ext4_fsblk_t block, unsigned long count,
int flags)
{
- struct buffer_head *bitmap_bh = NULL;
struct super_block *sb = inode->i_sb;
- struct ext4_group_desc *gdp;
struct ext4_group_info *grp;
unsigned int overflow;
ext4_grpblk_t bit;
- struct buffer_head *gd_bh;
ext4_group_t block_group;
struct ext4_sb_info *sbi;
struct ext4_buddy e4b;
unsigned int count_clusters;
int err = 0;
- int ret;
+ int mark_flags = 0;
+ ext4_grpblk_t changed;
sbi = EXT4_SB(sb);
@@ -6428,64 +6426,19 @@ do_more:
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;
- }
- gdp = ext4_get_group_desc(sb, block_group, &gd_bh);
- if (!gdp) {
- 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)
- 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;
#ifdef AGGRESSIVE_CHECK
- {
- int i;
- for (i = 0; i < count_clusters; i++)
- BUG_ON(!mb_test_bit(bit + i, bitmap_bh->b_data));
- }
+ mark_flags |= EXT4_MB_BITMAP_MARKED_CHECK;
#endif
- ext4_lock_group(sb, block_group);
- mb_clear_bits(bitmap_bh->b_data, bit, count_clusters);
- ret = ext4_free_group_clusters(sb, gdp) + count_clusters;
- ext4_free_group_clusters_set(sb, gdp, ret);
- ext4_block_bitmap_csum_set(sb, gdp, bitmap_bh);
- ext4_group_desc_csum_set(sb, block_group, gdp);
- ext4_unlock_group(sb, block_group);
+ err = ext4_mb_mark_context(handle, sb, false, block_group, bit,
+ count_clusters, mark_flags, &changed);
- if (sbi->s_log_groups_per_flex) {
- ext4_group_t flex_group = ext4_flex_group(sbi, block_group);
- atomic64_add(count_clusters,
- &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);
+ if (err && changed == 0)
+ goto error_clean;
- /* 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;
+#ifdef AGGRESSIVE_CHECK
+ BUG_ON(changed != count_clusters);
+#endif
/*
* We need to make sure we don't reuse the freed block until after the
@@ -6544,7 +6497,6 @@ do_more:
block += count;
count = overflow;
ext4_mb_unload_buddy(&e4b);
- put_bh(bitmap_bh);
/* The range changed so it's no longer validated */
flags &= ~EXT4_FREE_BLOCKS_VALIDATED;
goto do_more;
@@ -6552,7 +6504,6 @@ do_more:
error_clean:
ext4_mb_unload_buddy(&e4b);
- brelse(bitmap_bh);
error_out:
ext4_std_error(sb, err);
}