add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/efs/super.c
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@@ -13,6 +13,7 @@
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 #include <linux/slab.h>
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 #include <linux/buffer_head.h>
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 #include <linux/vfs.h>
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+#include <linux/blkdev.h>
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 #include "efs.h"
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 #include <linux/efs_vh.h>
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@@ -74,15 +75,9 @@
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 	return &ei->vfs_inode;
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 }
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-static void efs_i_callback(struct rcu_head *head)
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+static void efs_free_inode(struct inode *inode)
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 {
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-	struct inode *inode = container_of(head, struct inode, i_rcu);
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 	kmem_cache_free(efs_inode_cachep, INODE_INFO(inode));
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-}
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-
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-static void efs_destroy_inode(struct inode *inode)
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-{
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-	call_rcu(&inode->i_rcu, efs_i_callback);
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 }
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 static void init_once(void *foo)
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@@ -122,7 +117,7 @@
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 static const struct super_operations efs_superblock_operations = {
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 	.alloc_inode	= efs_alloc_inode,
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-	.destroy_inode	= efs_destroy_inode,
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+	.free_inode	= efs_free_inode,
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 	.statfs		= efs_statfs,
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 	.remount_fs	= efs_remount,
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 };
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@@ -263,6 +258,8 @@
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 	if (!sb)
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 		return -ENOMEM;
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 	s->s_fs_info = sb;
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+	s->s_time_min = 0;
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+	s->s_time_max = U32_MAX;
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 	s->s_magic		= EFS_SUPER_MAGIC;
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 	if (!sb_set_blocksize(s, EFS_BLOCKSIZE)) {
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@@ -345,8 +342,7 @@
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 			sbi->inode_blocks *
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 			(EFS_BLOCKSIZE / sizeof(struct efs_dinode));
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 	buf->f_ffree   = sbi->inode_free;	/* free inodes */
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-	buf->f_fsid.val[0] = (u32)id;
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-	buf->f_fsid.val[1] = (u32)(id >> 32);
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+	buf->f_fsid    = u64_to_fsid(id);
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 	buf->f_namelen = EFS_MAXNAMELEN;	/* max filename length */
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 	return 0;