1 Index: linux-2.6.32-el6-beta/fs/ext4/ialloc.c
2 ===================================================================
3 --- linux-2.6.32-el6-beta.orig/fs/ext4/ialloc.c
4 +++ linux-2.6.32-el6-beta/fs/ext4/ialloc.c
5 @@ -825,11 +825,15 @@ struct inode *ext4_new_inode(handle_t *h
7 ngroups = ext4_get_groups_count(sb);
8 trace_ext4_request_inode(dir, mode);
11 + if (sbi->s_max_dir_size > 0 && i_size_read(dir) >= sbi->s_max_dir_size)
12 + return ERR_PTR(-EFBIG);
14 inode = new_inode(sb);
16 return ERR_PTR(-ENOMEM);
21 goal = sbi->s_inode_goal;
22 Index: linux-2.6.32-el6-beta/fs/ext4/super.c
23 ===================================================================
24 --- linux-2.6.32-el6-beta.orig/fs/ext4/super.c
25 +++ linux-2.6.32-el6-beta/fs/ext4/super.c
26 @@ -2601,6 +2601,7 @@ EXT4_RO_ATTR(lifetime_write_kbytes);
27 EXT4_ATTR_OFFSET(inode_readahead_blks, 0644, sbi_ui_show,
28 inode_readahead_blks_store, s_inode_readahead_blks);
29 EXT4_RW_ATTR_SBI_UI(inode_goal, s_inode_goal);
30 +EXT4_RW_ATTR_SBI_UI(max_dir_size, s_max_dir_size);
31 EXT4_RW_ATTR_SBI_UI(mb_stats, s_mb_stats);
32 EXT4_RW_ATTR_SBI_UI(mb_max_to_scan, s_mb_max_to_scan);
33 EXT4_RW_ATTR_SBI_UI(mb_min_to_scan, s_mb_min_to_scan);
34 @@ -2615,6 +2616,7 @@ static struct attribute *ext4_attrs[] =
35 ATTR_LIST(lifetime_write_kbytes),
36 ATTR_LIST(inode_readahead_blks),
37 ATTR_LIST(inode_goal),
38 + ATTR_LIST(max_dir_size),
40 ATTR_LIST(mb_max_to_scan),
41 ATTR_LIST(mb_min_to_scan),
42 Index: linux-2.6.32-el6-beta/fs/ext4/ext4.h
43 ===================================================================
44 --- linux-2.6.32-el6-beta.orig/fs/ext4/ext4.h
45 +++ linux-2.6.32-el6-beta/fs/ext4/ext4.h
46 @@ -1029,6 +1029,8 @@ struct ext4_sb_info {
48 unsigned int s_log_groups_per_flex;
49 struct flex_groups *s_flex_groups;
51 + unsigned long s_max_dir_size;
53 /* workqueue for dio unwritten */
54 struct workqueue_struct *dio_unwritten_wq;
55 @@ -1353,6 +1355,12 @@ struct mmp_struct {
56 #define EXT4_MMP_MIN_CHECK_INTERVAL 5
59 + * max directory size tunable
61 +#define EXT4_DEFAULT_MAX_DIR_SIZE 0
62 +#define EXT4_MAX_DIR_SIZE_NAME "max_dir_size"