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38 lines
834 B
C
38 lines
834 B
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2022, Alibaba Cloud
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*/
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#include <linux/fscache.h>
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#include "internal.h"
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int erofs_fscache_register_fs(struct super_block *sb)
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{
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struct erofs_sb_info *sbi = EROFS_SB(sb);
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struct fscache_volume *volume;
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char *name;
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int ret = 0;
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name = kasprintf(GFP_KERNEL, "erofs,%s", sbi->opt.fsid);
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if (!name)
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return -ENOMEM;
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volume = fscache_acquire_volume(name, NULL, NULL, 0);
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if (IS_ERR_OR_NULL(volume)) {
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erofs_err(sb, "failed to register volume for %s", name);
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ret = volume ? PTR_ERR(volume) : -EOPNOTSUPP;
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volume = NULL;
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}
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sbi->volume = volume;
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kfree(name);
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return ret;
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}
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void erofs_fscache_unregister_fs(struct super_block *sb)
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{
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struct erofs_sb_info *sbi = EROFS_SB(sb);
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fscache_relinquish_volume(sbi->volume, NULL, false);
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sbi->volume = NULL;
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}
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