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54 lines
1.2 KiB
54 lines
1.2 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* FS-Cache statistics viewing interface |
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* |
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* Copyright (C) 2021 Red Hat, Inc. All Rights Reserved. |
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* Written by David Howells ([email protected]) |
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*/ |
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#define FSCACHE_DEBUG_LEVEL CACHE |
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#include <linux/module.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include "internal.h" |
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/* |
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* initialise the /proc/fs/fscache/ directory |
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*/ |
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int __init fscache_proc_init(void) |
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{ |
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if (!proc_mkdir("fs/fscache", NULL)) |
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goto error_dir; |
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if (!proc_create_seq("fs/fscache/caches", S_IFREG | 0444, NULL, |
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&fscache_caches_seq_ops)) |
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goto error; |
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if (!proc_create_seq("fs/fscache/volumes", S_IFREG | 0444, NULL, |
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&fscache_volumes_seq_ops)) |
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goto error; |
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if (!proc_create_seq("fs/fscache/cookies", S_IFREG | 0444, NULL, |
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&fscache_cookies_seq_ops)) |
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goto error; |
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#ifdef CONFIG_FSCACHE_STATS |
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if (!proc_create_single("fs/fscache/stats", S_IFREG | 0444, NULL, |
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fscache_stats_show)) |
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goto error; |
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#endif |
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return 0; |
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error: |
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remove_proc_entry("fs/fscache", NULL); |
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error_dir: |
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return -ENOMEM; |
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} |
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/* |
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* clean up the /proc/fs/fscache/ directory |
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*/ |
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void fscache_proc_cleanup(void) |
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{ |
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remove_proc_subtree("fs/fscache", NULL); |
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}
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