ldiskfs/kernel_patches/patches/sles12sp2/ext4-max-dir-size.patch

   1 Add a proc interface for max_dir_size.
   2
   3 Index: linux-3.10.0-123.13.2.el7.x86_64/fs/ext4/sysfs.c
   4 ===================================================================
   5 --- linux-3.10.0-123.13.2.el7.x86_64.orig/fs/ext4/sysfs.c
   6 +++ linux-3.10.0-123.13.2.el7.x86_64/fs/ext4/sysfs.c
   7 @@ -2557,6 +2562,8 @@ EXT4_RW_ATTR(reserved_clusters);
   8  EXT4_ATTR_OFFSET(inode_readahead_blks, 0644, sbi_ui_show,
   9                  inode_readahead_blks_store, s_inode_readahead_blks);
  10  EXT4_RW_ATTR_SBI_UI(inode_goal, s_inode_goal);
  11 +EXT4_RW_ATTR_SBI_UI(max_dir_size, s_max_dir_size_kb);
  12 +EXT4_RW_ATTR_SBI_UI(max_dir_size_kb, s_max_dir_size_kb);
  13  EXT4_RW_ATTR_SBI_UI(mb_stats, s_mb_stats);
  14  EXT4_RW_ATTR_SBI_UI(mb_max_to_scan, s_mb_max_to_scan);
  15  EXT4_RW_ATTR_SBI_UI(mb_min_to_scan, s_mb_min_to_scan);
  16 @@ -2581,6 +2588,8 @@ static struct attribute *ext4_attrs[] =
  17         ATTR_LIST(reserved_clusters),
  18         ATTR_LIST(inode_readahead_blks),
  19         ATTR_LIST(inode_goal),
  20 +       ATTR_LIST(max_dir_size),
  21 +       ATTR_LIST(max_dir_size_kb),
  22         ATTR_LIST(mb_stats),
  23         ATTR_LIST(mb_max_to_scan),
  24         ATTR_LIST(mb_min_to_scan),
  25 @@ -2676,7 +2476,9 @@ static ssize_t sbi_ui_show(struct ext4_a
  26                 if (!ptr)
  27                         return 0;
  28                 return snprintf(buf, PAGE_SIZE, "%u\n",
  29 -                               *((unsigned int *) ptr));
  30 +                               strcmp("max_dir_size", a->attr.name) ?
  31 +                               *((unsigned int *) ptr) :
  32 +                               (*((unsigned int *) ptr)) << 10);
  33         case attr_pointer_atomic:
  34                 if (!ptr)
  35                         return 0;
  36 @@ -2691,6 +2494,8 @@ static ssize_t sbi_ui_store(struct ext4_
  37                 ret = kstrtoul(skip_spaces(buf), 0, &t);
  38                 if (ret)
  39                         return ret;
  40 +               if (strcmp("max_dir_size", a->attr.name) == 0)
  41 +                       t >>= 10;
  42                 *((unsigned int *) ptr) = t;
  43                 return len;
  44         case attr_inode_readahead: