Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[karo-tx-linux.git] / fs / ext4 / super.c

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index e32195d6aac34656b13a5619c3750e8b30586c08..cd37f9d5e447f7c3fbc578dbddc8c988d435e6be 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -841,6 +841,13 @@ static int ext4_drop_inode(struct inode *inode)
        return drop;
 }
 
+static void ext4_i_callback(struct rcu_head *head)
+{
+       struct inode *inode = container_of(head, struct inode, i_rcu);
+       INIT_LIST_HEAD(&inode->i_dentry);
+       kmem_cache_free(ext4_inode_cachep, EXT4_I(inode));
+}
+
 static void ext4_destroy_inode(struct inode *inode)
 {
        ext4_ioend_wait(inode);
@@ -853,7 +860,7 @@ static void ext4_destroy_inode(struct inode *inode)
                                true);
                dump_stack();
        }
-       kmem_cache_free(ext4_inode_cachep, EXT4_I(inode));
+       call_rcu(&inode->i_rcu, ext4_i_callback);
 }
 
 static void init_once(void *foo)
@@ -1026,6 +1033,8 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
            !(def_mount_opts & EXT4_DEFM_NODELALLOC))
                seq_puts(seq, ",nodelalloc");
 
+       if (test_opt(sb, MBLK_IO_SUBMIT))
+               seq_puts(seq, ",mblk_io_submit");
        if (sbi->s_stripe)
                seq_printf(seq, ",stripe=%lu", sbi->s_stripe);
        /*
@@ -1239,8 +1248,8 @@ enum {
        Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
        Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err,
        Opt_resize, Opt_usrquota, Opt_grpquota, Opt_i_version,
-       Opt_stripe, Opt_delalloc, Opt_nodelalloc,
-       Opt_block_validity, Opt_noblock_validity,
+       Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit,
+       Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
        Opt_inode_readahead_blks, Opt_journal_ioprio,
        Opt_dioread_nolock, Opt_dioread_lock,
        Opt_discard, Opt_nodiscard,
@@ -1304,6 +1313,8 @@ static const match_table_t tokens = {
        {Opt_resize, "resize"},
        {Opt_delalloc, "delalloc"},
        {Opt_nodelalloc, "nodelalloc"},
+       {Opt_mblk_io_submit, "mblk_io_submit"},
+       {Opt_nomblk_io_submit, "nomblk_io_submit"},
        {Opt_block_validity, "block_validity"},
        {Opt_noblock_validity, "noblock_validity"},
        {Opt_inode_readahead_blks, "inode_readahead_blks=%u"},
@@ -1725,6 +1736,12 @@ set_qf_format:
                case Opt_nodelalloc:
                        clear_opt(sbi->s_mount_opt, DELALLOC);
                        break;
+               case Opt_mblk_io_submit:
+                       set_opt(sbi->s_mount_opt, MBLK_IO_SUBMIT);
+                       break;
+               case Opt_nomblk_io_submit:
+                       clear_opt(sbi->s_mount_opt, MBLK_IO_SUBMIT);
+                       break;
                case Opt_stripe:
                        if (match_int(&args[0], &option))
                                return 0;