mirror of
https://github.com/openharmony/third_party_Linux_Kernel.git
synced 2026-07-18 16:54:34 -04:00
wangchenyang
93aed1ac56
Feature or Bugfix:Feature Binary Source:Huawei PrivateCode(Yes/No):Yes Change-Id: I175d2648bc6f9078c34de2c0a5c93fda10b86c47 ChangeID:13306412
43 lines
981 B
C
Executable File
43 lines
981 B
C
Executable File
/*
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* JFFS2 -- Journalling Flash File System, Version 2.
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*
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* Copyright © 2001-2007 Red Hat, Inc.
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* Copyright © 2004-2010 David Woodhouse <dwmw2@infradead.org>
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*
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* Created by David Woodhouse <dwmw2@infradead.org>
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*
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* For licensing information, see the file 'LICENCE' in this directory.
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*
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*/
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#include "los_vm_common.h"
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#include "nodelist.h"
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#include "vfs_jffs2.h"
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static unsigned char gc_buffer[PAGE_SIZE]; //avoids malloc when user may be under memory pressure
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unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
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struct jffs2_inode_info *f,
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unsigned long offset,
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unsigned long *priv)
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{
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/* FIXME: This works only with one file system mounted at a time */
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int ret;
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ret = jffs2_read_inode_range(c, f, gc_buffer,
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offset & ~(PAGE_SIZE-1), PAGE_SIZE);
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if (ret)
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return ERR_PTR(ret);
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return gc_buffer;
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}
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void jffs2_gc_release_page(struct jffs2_sb_info *c,
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unsigned char *ptr,
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unsigned long *priv)
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{
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/* Do nothing */
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}
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