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staging: erofs: avoid opened loop codes 

Use __GFP_NOFAIL to avoid opened loop codes in z_erofs_vle_unzip().

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Gao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20190716094422.110805-1-yuchao0@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
alistair/sunxi64-5.4-dsi
Chao Yu 2019-07-16 17:44:22 +08:00 committed by Greg Kroah-Hartman
parent 44a22dc3dd
commit 441dfcc886
1 changed files with 8 additions and 8 deletions
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16
drivers/staging/erofs/unzip_vle.c
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@ -921,18 +921,18 @@ static int z_erofs_vle_unzip(struct super_block *sb,
mutex_trylock(&z_pagemap_global_lock))
pages = z_pagemap_global;
else {
repeat:
gfp_t gfp_flags = GFP_KERNEL;
if (nr_pages > Z_EROFS_VLE_VMAP_GLOBAL_PAGES)
gfp_flags |= __GFP_NOFAIL;
pages = kvmalloc_array(nr_pages, sizeof(struct page *),
GFP_KERNEL);
gfp_flags);
/* fallback to global pagemap for the lowmem scenario */
if (unlikely(!pages)) {
if (nr_pages > Z_EROFS_VLE_VMAP_GLOBAL_PAGES)
goto repeat;
else {
mutex_lock(&z_pagemap_global_lock);
pages = z_pagemap_global;
}
mutex_lock(&z_pagemap_global_lock);
pages = z_pagemap_global;
}
}