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-rw-r--r--fs/btrfs/compression.c6
-rw-r--r--fs/btrfs/lzo.c4
-rw-r--r--fs/btrfs/reflink.c6
-rw-r--r--fs/btrfs/send.c7
-rw-r--r--fs/btrfs/zlib.c5
-rw-r--r--fs/btrfs/zstd.c6
6 files changed, 11 insertions, 23 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 5ae3fa0386b7..047b632b4139 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -1231,7 +1231,6 @@ int btrfs_decompress_buf2page(const char *buf, unsigned long buf_start,
unsigned long prev_start_byte;
unsigned long working_bytes = total_out - buf_start;
unsigned long bytes;
- char *kaddr;
struct bio_vec bvec = bio_iter_iovec(bio, bio->bi_iter);
/*
@@ -1262,9 +1261,8 @@ int btrfs_decompress_buf2page(const char *buf, unsigned long buf_start,
PAGE_SIZE - (buf_offset % PAGE_SIZE));
bytes = min(bytes, working_bytes);
- kaddr = kmap_atomic(bvec.bv_page);
- memcpy(kaddr + bvec.bv_offset, buf + buf_offset, bytes);
- kunmap_atomic(kaddr);
+ memcpy_to_page(bvec.bv_page, bvec.bv_offset, buf + buf_offset,
+ bytes);
flush_dcache_page(bvec.bv_page);
buf_offset += bytes;
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c
index aa9cd11f4b78..9084a950dc09 100644
--- a/fs/btrfs/lzo.c
+++ b/fs/btrfs/lzo.c
@@ -467,7 +467,7 @@ int lzo_decompress(struct list_head *ws, unsigned char *data_in,
destlen = min_t(unsigned long, destlen, PAGE_SIZE);
bytes = min_t(unsigned long, destlen, out_len - start_byte);
- kaddr = kmap_atomic(dest_page);
+ kaddr = kmap_local_page(dest_page);
memcpy(kaddr, workspace->buf + start_byte, bytes);
/*
@@ -477,7 +477,7 @@ int lzo_decompress(struct list_head *ws, unsigned char *data_in,
*/
if (bytes < destlen)
memset(kaddr+bytes, 0, destlen-bytes);
- kunmap_atomic(kaddr);
+ kunmap_local(kaddr);
out:
return ret;
}
diff --git a/fs/btrfs/reflink.c b/fs/btrfs/reflink.c
index b03e7891394e..74c62e49c0c9 100644
--- a/fs/btrfs/reflink.c
+++ b/fs/btrfs/reflink.c
@@ -103,12 +103,8 @@ static int copy_inline_to_page(struct btrfs_inode *inode,
set_bit(BTRFS_INODE_NO_DELALLOC_FLUSH, &inode->runtime_flags);
if (comp_type == BTRFS_COMPRESS_NONE) {
- char *map;
-
- map = kmap(page);
- memcpy(map, data_start, datal);
+ memcpy_to_page(page, 0, data_start, datal);
flush_dcache_page(page);
- kunmap(page);
} else {
ret = btrfs_decompress(comp_type, data_start, page, 0,
inline_size, datal);
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 78a35374d492..83982b3b7057 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -4948,7 +4948,6 @@ static int put_file_data(struct send_ctx *sctx, u64 offset, u32 len)
struct btrfs_fs_info *fs_info = root->fs_info;
struct inode *inode;
struct page *page;
- char *addr;
pgoff_t index = offset >> PAGE_SHIFT;
pgoff_t last_index;
unsigned pg_offset = offset_in_page(offset);
@@ -5001,10 +5000,8 @@ static int put_file_data(struct send_ctx *sctx, u64 offset, u32 len)
}
}
- addr = kmap(page);
- memcpy(sctx->send_buf + sctx->send_size, addr + pg_offset,
- cur_len);
- kunmap(page);
+ memcpy_from_page(sctx->send_buf + sctx->send_size, page,
+ pg_offset, cur_len);
unlock_page(page);
put_page(page);
index++;
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index 05615a1099db..d524acf7b3e5 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -432,9 +432,8 @@ int zlib_decompress(struct list_head *ws, unsigned char *data_in,
PAGE_SIZE - (buf_offset % PAGE_SIZE));
bytes = min(bytes, bytes_left);
- kaddr = kmap_atomic(dest_page);
- memcpy(kaddr + pg_offset, workspace->buf + buf_offset, bytes);
- kunmap_atomic(kaddr);
+ memcpy_to_page(dest_page, pg_offset,
+ workspace->buf + buf_offset, bytes);
pg_offset += bytes;
bytes_left -= bytes;
diff --git a/fs/btrfs/zstd.c b/fs/btrfs/zstd.c
index 9a4871636c6c..8e9626d63976 100644
--- a/fs/btrfs/zstd.c
+++ b/fs/btrfs/zstd.c
@@ -688,10 +688,8 @@ int zstd_decompress(struct list_head *ws, unsigned char *data_in,
bytes = min_t(unsigned long, destlen - pg_offset,
workspace->out_buf.size - buf_offset);
- kaddr = kmap_atomic(dest_page);
- memcpy(kaddr + pg_offset, workspace->out_buf.dst + buf_offset,
- bytes);
- kunmap_atomic(kaddr);
+ memcpy_to_page(dest_page, pg_offset,
+ workspace->out_buf.dst + buf_offset, bytes);
pg_offset += bytes;
}