--- /dev/null
+Index: linux-3.10.0-327.10.1.el7.x86_64/fs/ext4/mballoc.c
+===================================================================
+--- linux-3.10.0-327.10.1.el7.x86_64.orig/fs/ext4/mballoc.c
++++ linux-3.10.0-327.10.1.el7.x86_64/fs/ext4/mballoc.c
+@@ -2435,6 +2435,77 @@ static struct kmem_cache *get_groupinfo_
+ return cachep;
+ }
+
++#define EXT4_MB_MAX_INPUT_STRING_SIZE 32
++
++static ssize_t ext4_mb_last_group_write(struct file *file,
++ const char __user *buf,
++ size_t cnt, loff_t *pos)
++{
++ char dummy[EXT4_MB_MAX_INPUT_STRING_SIZE + 1];
++ struct super_block *sb = PDE_DATA(file_inode(file));
++ struct ext4_sb_info *sbi = EXT4_SB(sb);
++ unsigned long val;
++ char *end;
++
++ if (cnt > EXT4_MB_MAX_INPUT_STRING_SIZE)
++ return -EINVAL;
++ if (copy_from_user(dummy, buf, cnt))
++ return -EFAULT;
++ dummy[cnt] = '\0';
++ val = simple_strtoul(dummy, &end, 0);
++ if (dummy == end)
++ return -EINVAL;
++ if (val >= ext4_get_groups_count(sb))
++ return -ERANGE;
++ spin_lock(&sbi->s_md_lock);
++ sbi->s_mb_last_group = val;
++ sbi->s_mb_last_start = 0;
++ spin_unlock(&sbi->s_md_lock);
++ return cnt;
++}
++
++static int ext4_mb_seq_last_group_seq_show(struct seq_file *m, void *v)
++{
++ struct ext4_sb_info *sbi = EXT4_SB(m->private);
++
++ seq_printf(m , "%ld\n", sbi->s_mb_last_group);
++ return 0;
++}
++
++static int ext4_mb_seq_last_group_open(struct inode *inode, struct file *file)
++{
++ return single_open(file, ext4_mb_seq_last_group_seq_show, PDE_DATA(inode));
++}
++
++static const struct file_operations ext4_mb_seq_last_group_fops = {
++ .owner = THIS_MODULE,
++ .open = ext4_mb_seq_last_group_open,
++ .read = seq_read,
++ .llseek = seq_lseek,
++ .release = seq_release,
++ .write = ext4_mb_last_group_write,
++};
++
++static int ext4_mb_seq_last_start_seq_show(struct seq_file *m, void *v)
++{
++ struct ext4_sb_info *sbi = EXT4_SB(m->private);
++
++ seq_printf(m , "%ld\n", sbi->s_mb_last_start);
++ return 0;
++}
++
++static int ext4_mb_seq_last_start_open(struct inode *inode, struct file *file)
++{
++ return single_open(file, ext4_mb_seq_last_start_seq_show, PDE_DATA(inode));
++}
++static const struct file_operations ext4_mb_seq_last_start_fops = {
++ .owner = THIS_MODULE,
++ .open = ext4_mb_seq_last_start_open,
++ .read = seq_read,
++ .llseek = seq_lseek,
++ .release = seq_release,
++};
++
+ /*
+ * Allocate the top-level s_group_info array for the specified number
+ * of groups
+@@ -2790,6 +2861,11 @@ int ext4_mb_init(struct super_block *sb)
+ proc_create_data(EXT4_MB_PREALLOC_TABLE, S_IFREG | S_IRUGO |
+ S_IWUSR, sbi->s_proc,
+ &ext4_mb_prealloc_seq_fops, sb);
++ proc_create_data("mb_last_group", S_IFREG | S_IRUGO |
++ S_IWUSR, sbi->s_proc,
++ &ext4_mb_seq_last_group_fops, sb);
++ proc_create_data("mb_last_start", S_IFREG | S_IRUGO,
++ sbi->s_proc, &ext4_mb_seq_last_start_fops, sb);
+ }
+
+ return 0;
+@@ -2835,6 +2911,8 @@ int ext4_mb_release(struct super_block *
+
+ if (sbi->s_proc) {
+ remove_proc_entry("mb_groups", sbi->s_proc);
++ remove_proc_entry("mb_last_group", sbi->s_proc);
++ remove_proc_entry("mb_last_start", sbi->s_proc);
+ remove_proc_entry(EXT4_MB_PREALLOC_TABLE, sbi->s_proc);
+ }
+
--- /dev/null
+Index: linux-4.4/fs/ext4/mballoc.c
+===================================================================
+--- linux-4.4.orig/fs/ext4/mballoc.c
++++ linux-4.4/fs/ext4/mballoc.c
+@@ -2483,6 +2483,77 @@ static struct kmem_cache *get_groupinfo_
+ return cachep;
+ }
+
++#define EXT4_MB_MAX_INPUT_STRING_SIZE 32
++
++static ssize_t ext4_mb_last_group_write(struct file *file,
++ const char __user *buf,
++ size_t cnt, loff_t *pos)
++{
++ char dummy[EXT4_MB_MAX_INPUT_STRING_SIZE + 1];
++ struct super_block *sb = PDE_DATA(file_inode(file));
++ struct ext4_sb_info *sbi = EXT4_SB(sb);
++ unsigned long val;
++ char *end;
++
++ if (cnt > EXT4_MB_MAX_INPUT_STRING_SIZE)
++ return -EINVAL;
++ if (copy_from_user(dummy, buf, cnt))
++ return -EFAULT;
++ dummy[cnt] = '\0';
++ val = simple_strtoul(dummy, &end, 0);
++ if (dummy == end)
++ return -EINVAL;
++ if (val >= ext4_get_groups_count(sb))
++ return -ERANGE;
++ spin_lock(&sbi->s_md_lock);
++ sbi->s_mb_last_group = val;
++ sbi->s_mb_last_start = 0;
++ spin_unlock(&sbi->s_md_lock);
++ return cnt;
++}
++
++static int ext4_mb_seq_last_group_seq_show(struct seq_file *m, void *v)
++{
++ struct ext4_sb_info *sbi = EXT4_SB(m->private);
++
++ seq_printf(m , "%ld\n", sbi->s_mb_last_group);
++ return 0;
++}
++
++static int ext4_mb_seq_last_group_open(struct inode *inode, struct file *file)
++{
++ return single_open(file, ext4_mb_seq_last_group_seq_show, PDE_DATA(inode));
++}
++
++const struct file_operations ext4_seq_mb_last_group_fops = {
++ .owner = THIS_MODULE,
++ .open = ext4_mb_seq_last_group_open,
++ .read = seq_read,
++ .llseek = seq_lseek,
++ .release = seq_release,
++ .write = ext4_mb_last_group_write,
++};
++
++static int ext4_mb_seq_last_start_seq_show(struct seq_file *m, void *v)
++{
++ struct ext4_sb_info *sbi = EXT4_SB(m->private);
++
++ seq_printf(m , "%ld\n", sbi->s_mb_last_start);
++ return 0;
++}
++
++static int ext4_mb_seq_last_start_open(struct inode *inode, struct file *file)
++{
++ return single_open(file, ext4_mb_seq_last_start_seq_show, PDE_DATA(inode));
++}
++const struct file_operations ext4_seq_mb_last_start_fops = {
++ .owner = THIS_MODULE,
++ .open = ext4_mb_seq_last_start_open,
++ .read = seq_read,
++ .llseek = seq_lseek,
++ .release = seq_release,
++};
++
+ /*
+ * Allocate the top-level s_group_info array for the specified number
+ * of groups
+Index: linux-4.4/fs/ext4/ext4.h
+===================================================================
+--- linux-4.4.orig/fs/ext4/ext4.h
++++ linux-4.4/fs/ext4/ext4.h
+@@ -2595,6 +2595,8 @@ extern void ext4_end_bitmap_read(struct
+ /* mballoc.c */
+ extern const struct file_operations ext4_seq_prealloc_table_fops;
+ extern const struct file_operations ext4_seq_mb_groups_fops;
++extern const struct file_operations ext4_seq_mb_last_group_fops;
++extern const struct file_operations ext4_seq_mb_last_start_fops;
+ extern long ext4_mb_stats;
+ extern long ext4_mb_max_to_scan;
+ extern int ext4_mb_init(struct super_block *);
+Index: linux-4.4/fs/ext4/sysfs.c
+===================================================================
+--- linux-4.4.orig/fs/ext4/sysfs.c
++++ linux-4.4/fs/ext4/sysfs.c
+@@ -396,6 +396,8 @@ static struct ext4_proc_files {
+ PROC_FILE_LIST(es_shrinker_info),
+ PROC_FILE_LIST(mb_groups),
+ PROC_FILE_LIST(prealloc_table),
++ PROC_FILE_LIST(mb_last_group),
++ PROC_FILE_LIST(mb_last_start),
+ { NULL, NULL },
+ };
+
rhel7/ext4-export-orphan-add.patch
rhel7/ext4-mmp-dont-mark-bh-dirty.patch
rhel7/ext4-include-terminating-u32-in-size-of-xattr-entries-when-expanding-inodes.patch
+rhel7.2/ext4-export-mb-stream-allocator-variables.patch
rhel7/ext4-export-orphan-add.patch
rhel7/ext4-mmp-dont-mark-bh-dirty.patch
rhel7/ext4-include-terminating-u32-in-size-of-xattr-entries-when-expanding-inodes.patch
+rhel7.2/ext4-export-mb-stream-allocator-variables.patch
rhel7/ext4-export-orphan-add.patch
rhel7/ext4-mmp-dont-mark-bh-dirty.patch
ubuntu18/ext4-include-terminating-u32-in-size-of-xattr-entries-when-expanding-inodes.patch
+sles12sp2/ext4-export-mb-stream-allocator-variables.patch
rhel7/ext4-export-orphan-add.patch
rhel7/ext4-mmp-dont-mark-bh-dirty.patch
rhel7/ext4-include-terminating-u32-in-size-of-xattr-entries-when-expanding-inodes.patch
+sles12sp2/ext4-export-mb-stream-allocator-variables.patch
rhel7/ext4-use-GFP_NOFS-in-ext4_inode_attach_jinode.patch
rhel7/ext4-export-orphan-add.patch
rhel7/ext4-include-terminating-u32-in-size-of-xattr-entries-when-expanding-inodes.patch
+sles12sp2/ext4-export-mb-stream-allocator-variables.patch
rhel7/ext4-export-orphan-add.patch
rhel7/ext4-mmp-dont-mark-bh-dirty.patch
rhel7/ext4-include-terminating-u32-in-size-of-xattr-entries-when-expanding-inodes.patch
+sles12sp2/ext4-export-mb-stream-allocator-variables.patch
git://git.whamcloud.com / fs / lustre-release.git / commitdiff