1 files changed, 6 insertions, 70 deletions

diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index 811ab66d805e..9d6a3c6158bd 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -19,6 +19,7 @@
 #include <trace/events/erofs.h>
 
 static struct kmem_cache *erofs_inode_cachep __read_mostly;
+struct file_system_type erofs_fs_type;
 
 void _erofs_err(struct super_block *sb, const char *function,
 		const char *fmt, ...)
@@ -253,8 +254,8 @@ static int erofs_init_device(struct erofs_buf *buf, struct super_block *sb,
 			return PTR_ERR(fscache);
 		dif->fscache = fscache;
 	} else if (!sbi->devs->flatdev) {
-		bdev = blkdev_get_by_path(dif->path, FMODE_READ | FMODE_EXCL,
-					  sb->s_type);
+		bdev = blkdev_get_by_path(dif->path, BLK_OPEN_READ, sb->s_type,
+					  NULL);
 		if (IS_ERR(bdev))
 			return PTR_ERR(bdev);
 		dif->bdev = bdev;
@@ -599,68 +600,6 @@ static int erofs_fc_parse_param(struct fs_context *fc,
 	return 0;
 }
 
-#ifdef CONFIG_EROFS_FS_ZIP
-static const struct address_space_operations managed_cache_aops;
-
-static bool erofs_managed_cache_release_folio(struct folio *folio, gfp_t gfp)
-{
-	bool ret = true;
-	struct address_space *const mapping = folio->mapping;
-
-	DBG_BUGON(!folio_test_locked(folio));
-	DBG_BUGON(mapping->a_ops != &managed_cache_aops);
-
-	if (folio_test_private(folio))
-		ret = erofs_try_to_free_cached_page(&folio->page);
-
-	return ret;
-}
-
-/*
- * It will be called only on inode eviction. In case that there are still some
- * decompression requests in progress, wait with rescheduling for a bit here.
- * We could introduce an extra locking instead but it seems unnecessary.
- */
-static void erofs_managed_cache_invalidate_folio(struct folio *folio,
-					       size_t offset, size_t length)
-{
-	const size_t stop = length + offset;
-
-	DBG_BUGON(!folio_test_locked(folio));
-
-	/* Check for potential overflow in debug mode */
-	DBG_BUGON(stop > folio_size(folio) || stop < length);
-
-	if (offset == 0 && stop == folio_size(folio))
-		while (!erofs_managed_cache_release_folio(folio, GFP_NOFS))
-			cond_resched();
-}
-
-static const struct address_space_operations managed_cache_aops = {
-	.release_folio = erofs_managed_cache_release_folio,
-	.invalidate_folio = erofs_managed_cache_invalidate_folio,
-};
-
-static int erofs_init_managed_cache(struct super_block *sb)
-{
-	struct erofs_sb_info *const sbi = EROFS_SB(sb);
-	struct inode *const inode = new_inode(sb);
-
-	if (!inode)
-		return -ENOMEM;
-
-	set_nlink(inode, 1);
-	inode->i_size = OFFSET_MAX;
-
-	inode->i_mapping->a_ops = &managed_cache_aops;
-	mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
-	sbi->managed_cache = inode;
-	return 0;
-}
-#else
-static int erofs_init_managed_cache(struct super_block *sb) { return 0; }
-#endif
-
 static struct inode *erofs_nfs_get_inode(struct super_block *sb,
 					 u64 ino, u32 generation)
 {
@@ -877,7 +816,7 @@ static int erofs_release_device_info(int id, void *ptr, void *data)
 
 	fs_put_dax(dif->dax_dev, NULL);
 	if (dif->bdev)
-		blkdev_put(dif->bdev, FMODE_READ | FMODE_EXCL);
+		blkdev_put(dif->bdev, &erofs_fs_type);
 	erofs_fscache_unregister_cookie(dif->fscache);
 	dif->fscache = NULL;
 	kfree(dif->path);
@@ -1016,10 +955,8 @@ static int __init erofs_module_init(void)
 					       sizeof(struct erofs_inode), 0,
 					       SLAB_RECLAIM_ACCOUNT,
 					       erofs_inode_init_once);
-	if (!erofs_inode_cachep) {
-		err = -ENOMEM;
-		goto icache_err;
-	}
+	if (!erofs_inode_cachep)
+		return -ENOMEM;
 
 	err = erofs_init_shrinker();
 	if (err)
@@ -1054,7 +991,6 @@ lzma_err:
 	erofs_exit_shrinker();
 shrinker_err:
 	kmem_cache_destroy(erofs_inode_cachep);
-icache_err:
 	return err;
 }