erofs: get rid of the remaining kmap_atomic()

It's unnecessary to use kmap_atomic() compared with kmap_local_page().
In addition, kmap_atomic() is deprecated now.

Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Yue Hu <huyue2@coolpad.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20230627161240.331-1-hsiangkao@linux.alibaba.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>

diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c
index 2a29943fa5cc41e8b5580d5b8c08d9672bedada4..ad53cf52d8994ea50571b2518f38e8418f09dfc7 100644 (file)
--- a/fs/erofs/decompressor.c
+++ b/fs/erofs/decompressor.c
@@ -148,7 +148,7 @@ static void *z_erofs_lz4_handle_overlap(struct z_erofs_lz4_decompress_ctx *ctx,
                *maptype = 0;
                return inpage;
        }
-       kunmap_atomic(inpage);
+       kunmap_local(inpage);
        might_sleep();
        src = erofs_vm_map_ram(rq->in, ctx->inpages);
        if (!src)
@@ -162,7 +162,7 @@ docopy:
        src = erofs_get_pcpubuf(ctx->inpages);
        if (!src) {
                DBG_BUGON(1);
-               kunmap_atomic(inpage);
+               kunmap_local(inpage);
                return ERR_PTR(-EFAULT);
        }
 
@@ -173,9 +173,9 @@ docopy:
                        min_t(unsigned int, total, PAGE_SIZE - *inputmargin);
 
                if (!inpage)
-                       inpage = kmap_atomic(*in);
+                       inpage = kmap_local_page(*in);
                memcpy(tmp, inpage + *inputmargin, page_copycnt);
-               kunmap_atomic(inpage);
+               kunmap_local(inpage);
                inpage = NULL;
                tmp += page_copycnt;
                total -= page_copycnt;
@@ -214,7 +214,7 @@ static int z_erofs_lz4_decompress_mem(struct z_erofs_lz4_decompress_ctx *ctx,
        int ret, maptype;
 
        DBG_BUGON(*rq->in == NULL);
-       headpage = kmap_atomic(*rq->in);
+       headpage = kmap_local_page(*rq->in);
 
        /* LZ4 decompression inplace is only safe if zero_padding is enabled */
        if (erofs_sb_has_zero_padding(EROFS_SB(rq->sb))) {
@@ -223,7 +223,7 @@ static int z_erofs_lz4_decompress_mem(struct z_erofs_lz4_decompress_ctx *ctx,
                                min_t(unsigned int, rq->inputsize,
                                      rq->sb->s_blocksize - rq->pageofs_in));
                if (ret) {
-                       kunmap_atomic(headpage);
+                       kunmap_local(headpage);
                        return ret;
                }
                may_inplace = !((rq->pageofs_in + rq->inputsize) &
@@ -261,7 +261,7 @@ static int z_erofs_lz4_decompress_mem(struct z_erofs_lz4_decompress_ctx *ctx,
        }
 
        if (maptype == 0) {
-               kunmap_atomic(headpage);
+               kunmap_local(headpage);
        } else if (maptype == 1) {
                vm_unmap_ram(src, ctx->inpages);
        } else if (maptype == 2) {
@@ -289,7 +289,7 @@ static int z_erofs_lz4_decompress(struct z_erofs_decompress_req *rq,
        /* one optimized fast path only for non bigpcluster cases yet */
        if (ctx.inpages == 1 && ctx.outpages == 1 && !rq->inplace_io) {
                DBG_BUGON(!*rq->out);
-               dst = kmap_atomic(*rq->out);
+               dst = kmap_local_page(*rq->out);
                dst_maptype = 0;
                goto dstmap_out;
        }
@@ -311,7 +311,7 @@ static int z_erofs_lz4_decompress(struct z_erofs_decompress_req *rq,
 dstmap_out:
        ret = z_erofs_lz4_decompress_mem(&ctx, dst + rq->pageofs_out);
        if (!dst_maptype)
-               kunmap_atomic(dst);
+               kunmap_local(dst);
        else if (dst_maptype == 2)
                vm_unmap_ram(dst, ctx.outpages);
        return ret;