We always call add_new_gdb_meta_bg with first group in mete_bg. Remove the
unnecessary ext4_meta_bg_first_group conversion to simplify the gdbblock
calculation.
Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
---
fs/ext4/resize.c | 24 +++++++++---------------
1 file changed, 9 insertions(+), 15 deletions(-)
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index e2c81b589de8..5e9084ff131c 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -104,18 +104,6 @@ int ext4_resize_end(struct super_block *sb, bool update_backups)
return 0;
}
-static ext4_group_t ext4_meta_bg_first_group(struct super_block *sb,
- ext4_group_t group) {
- return (group >> EXT4_DESC_PER_BLOCK_BITS(sb)) <<
- EXT4_DESC_PER_BLOCK_BITS(sb);
-}
-
-static ext4_fsblk_t ext4_meta_bg_first_block_no(struct super_block *sb,
- ext4_group_t group) {
- group = ext4_meta_bg_first_group(sb, group);
- return ext4_group_first_block_no(sb, group);
-}
-
static ext4_grpblk_t ext4_group_overhead_blocks(struct super_block *sb,
ext4_group_t group) {
ext4_grpblk_t overhead;
@@ -944,7 +932,13 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
}
/*
- * add_new_gdb_meta_bg is the sister of add_new_gdb.
+ * If there is no available space in the existing block group descriptors for
+ * the new block group and there are no reserved block group descriptors, then
+ * the meta_bg feature will get enabled, and es->s_first_meta_bg will get set
+ * to the first block group that is managed using meta_bg and s_first_meta_bg
+ * must be a multiple of EXT4_DESC_PER_BLOCK(sb).
+ * This function will be called when first group of meta_bg is added to bring
+ * new group descriptors block of new added meta_bg.
*/
static int add_new_gdb_meta_bg(struct super_block *sb,
handle_t *handle, ext4_group_t group) {
@@ -954,8 +948,8 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb);
int err;
- gdblock = ext4_meta_bg_first_block_no(sb, group) +
- ext4_bg_has_super(sb, group);
+ gdblock = ext4_group_first_block_no(sb, group) +
+ ext4_bg_has_super(sb, group);
gdb_bh = ext4_sb_bread(sb, gdblock, 0);
if (IS_ERR(gdb_bh))
return PTR_ERR(gdb_bh);
--
2.30.0
