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staging: zsmalloc: Finish conversion to a separate module
ZSMALLOC is tristate, but the code has no MODULE_LICENSE and since it depends on GPL-only symbols it cannot be loaded as a module. This in turn breaks zram which now depends on it. I assume it's meant to be Dual BSD/GPL like the other z-stuff. There is also no module_exit, which will make it impossible to unload. Add the appropriate module_init and module_exit declarations suggested by comments. Reported-by: Christian Ohm <chr.ohm@gmx.net> References: http://bugs.debian.org/677273 Cc: stable@vger.kernel.org # v3.4 Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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2f0f8e6a21
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069f101fa4
1 changed files with 7 additions and 26 deletions
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@ -471,12 +471,6 @@ static struct page *find_get_zspage(struct size_class *class)
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}
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/*
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* If this becomes a separate module, register zs_init() with
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* module_init(), zs_exit with module_exit(), and remove zs_initialized
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*/
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static int zs_initialized;
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static int zs_cpu_notifier(struct notifier_block *nb, unsigned long action,
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void *pcpu)
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{
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@ -535,7 +529,7 @@ fail:
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struct zs_pool *zs_create_pool(const char *name, gfp_t flags)
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{
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int i, error, ovhd_size;
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int i, ovhd_size;
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struct zs_pool *pool;
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if (!name)
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@ -562,28 +556,9 @@ struct zs_pool *zs_create_pool(const char *name, gfp_t flags)
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}
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/*
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* If this becomes a separate module, register zs_init with
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* module_init, and remove this block
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*/
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if (!zs_initialized) {
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error = zs_init();
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if (error)
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goto cleanup;
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zs_initialized = 1;
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}
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pool->flags = flags;
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pool->name = name;
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error = 0; /* Success */
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cleanup:
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if (error) {
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zs_destroy_pool(pool);
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pool = NULL;
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}
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return pool;
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}
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EXPORT_SYMBOL_GPL(zs_create_pool);
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@ -799,3 +774,9 @@ u64 zs_get_total_size_bytes(struct zs_pool *pool)
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return npages << PAGE_SHIFT;
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}
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EXPORT_SYMBOL_GPL(zs_get_total_size_bytes);
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module_init(zs_init);
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module_exit(zs_exit);
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_AUTHOR("Nitin Gupta <ngupta@vflare.org>");
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