ldiskfs/kernel_patches/patches/linux-5.8/ext4-max-dir-size.patch

   1 Add a proc interface for max_dir_size.
   2
   3 ---
   4  fs/ext4/sysfs.c |   10 +++++++++-
   5  1 file changed, 9 insertions(+), 1 deletion(-)
   6
   7 --- a/fs/ext4/sysfs.c
   8 +++ b/fs/ext4/sysfs.c
   9 @@ -209,6 +209,8 @@ EXT4_ATTR_FUNC(reserved_clusters, 0644);
  10  EXT4_ATTR_OFFSET(inode_readahead_blks, 0644, inode_readahead,
  11                  ext4_sb_info, s_inode_readahead_blks);
  12  EXT4_RW_ATTR_SBI_UI(inode_goal, s_inode_goal);
  13 +EXT4_RW_ATTR_SBI_UI(max_dir_size, s_max_dir_size_kb);
  14 +EXT4_RW_ATTR_SBI_UI(max_dir_size_kb, s_max_dir_size_kb);
  15  EXT4_RW_ATTR_SBI_UI(mb_stats, s_mb_stats);
  16  EXT4_RW_ATTR_SBI_UI(mb_max_to_scan, s_mb_max_to_scan);
  17  EXT4_RW_ATTR_SBI_UI(mb_min_to_scan, s_mb_min_to_scan);
  18 @@ -252,6 +254,8 @@ static struct attribute *ext4_attrs[] =
  19         ATTR_LIST(reserved_clusters),
  20         ATTR_LIST(inode_readahead_blks),
  21         ATTR_LIST(inode_goal),
  22 +       ATTR_LIST(max_dir_size),
  23 +       ATTR_LIST(max_dir_size_kb),
  24         ATTR_LIST(mb_stats),
  25         ATTR_LIST(mb_max_to_scan),
  26         ATTR_LIST(mb_min_to_scan),
  27 @@ -376,7 +380,9 @@ static ssize_t ext4_attr_show(struct kob
  28                                         le32_to_cpup(ptr));
  29                 else
  30                         return snprintf(buf, PAGE_SIZE, "%u\n",
  31 -                                       *((unsigned int *) ptr));
  32 +                                       strcmp("max_dir_size", a->attr.name) ?
  33 +                                       *((unsigned int *) ptr) :
  34 +                                       (*((unsigned int *) ptr)) << 10);
  35         case attr_pointer_ul:
  36                 if (!ptr)
  37                         return 0;
  38 @@ -439,6 +445,8 @@ static ssize_t ext4_attr_store(struct ko
  39                 ret = kstrtoul(skip_spaces(buf), 0, &t);
  40                 if (ret)
  41                         return ret;
  42 +               if (strcmp("max_dir_size", a->attr.name) == 0)
  43 +                       t >>= 10;
  44                 if (a->attr_ptr == ptr_ext4_super_block_offset)
  45                         *((__le32 *) ptr) = cpu_to_le32(t);
  46                 else