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-rw-r--r--fs/ext4/resize.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 8a8ec62..cf0c472 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1432,12 +1432,15 @@ static int ext4_flex_group_add(struct super_block *sb,
goto exit;
/*
* We will always be modifying at least the superblock and GDT
- * block. If we are adding a group past the last current GDT block,
+ * blocks. If we are adding a group past the last current GDT block,
* we will also modify the inode and the dindirect block. If we
* are adding a group with superblock/GDT backups we will also
* modify each of the reserved GDT dindirect blocks.
*/
- credit = flex_gd->count * 4 + reserved_gdb;
+ credit = 3; /* sb, resize inode, resize inode dindirect */
+ /* GDT blocks */
+ credit += 1 + DIV_ROUND_UP(flex_gd->count, EXT4_DESC_PER_BLOCK(sb));
+ credit += reserved_gdb; /* Reserved GDT dindirect blocks */
handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, credit);
if (IS_ERR(handle)) {
err = PTR_ERR(handle);
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