ext4: trigger the lazy inode table initialization after resize

After we have finished extending the file system, we need to trigger a
the lazy inode table thread to zero out the inode tables.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 11 insertions, 10 deletions

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 3d4fb81bacd5..c014edd12648 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2776,7 +2776,7 @@ static int ext4_run_li_request(struct ext4_li_request *elr)
                         break;
         }
 
-        if (group == ngroups)
+        if (group >= ngroups)
                 ret = 1;
 
         if (!ret) {
@@ -3016,33 +3016,34 @@ static struct ext4_li_request *ext4_li_request_new(struct super_block *sb,
         return elr;
 }
 
-static int ext4_register_li_request(struct super_block *sb,
-                                    ext4_group_t first_not_zeroed)
+int ext4_register_li_request(struct super_block *sb,
+                             ext4_group_t first_not_zeroed)
 {
         struct ext4_sb_info *sbi = EXT4_SB(sb);
-        struct ext4_li_request *elr;
+        struct ext4_li_request *elr = NULL;
         ext4_group_t ngroups = EXT4_SB(sb)->s_groups_count;
         int ret = 0;
 
+        mutex_lock(&ext4_li_mtx);
         if (sbi->s_li_request != NULL) {
                 /*
                  * Reset timeout so it can be computed again, because
                  * s_li_wait_mult might have changed.
                  */
                 sbi->s_li_request->lr_timeout = 0;
-                return 0;
+                goto out;
         }
 
         if (first_not_zeroed == ngroups ||
             (sb->s_flags & MS_RDONLY) ||
             !test_opt(sb, INIT_INODE_TABLE))
-                return 0;
+                goto out;
 
         elr = ext4_li_request_new(sb, first_not_zeroed);
-        if (!elr)
-                return -ENOMEM;
-
-        mutex_lock(&ext4_li_mtx);
+        if (!elr) {
+                ret = -ENOMEM;
+                goto out;
+        }
 
         if (NULL == ext4_li_info) {
                 ret = ext4_li_info_new();