Commit 4c2bf276 authored by David Sterba's avatar David Sterba

btrfs: compression: drop kmap/kunmap from generic helpers

The pages in compressed_pages are not from highmem anymore so we can
drop the mapping for checksum calculation and inline extent.
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent bbaf9715
...@@ -172,10 +172,9 @@ static int check_compressed_csum(struct btrfs_inode *inode, struct bio *bio, ...@@ -172,10 +172,9 @@ static int check_compressed_csum(struct btrfs_inode *inode, struct bio *bio,
/* Hash through the page sector by sector */ /* Hash through the page sector by sector */
for (pg_offset = 0; pg_offset < bytes_left; for (pg_offset = 0; pg_offset < bytes_left;
pg_offset += sectorsize) { pg_offset += sectorsize) {
kaddr = kmap_atomic(page); kaddr = page_address(page);
crypto_shash_digest(shash, kaddr + pg_offset, crypto_shash_digest(shash, kaddr + pg_offset,
sectorsize, csum); sectorsize, csum);
kunmap_atomic(kaddr);
if (memcmp(&csum, cb_sum, csum_size) != 0) { if (memcmp(&csum, cb_sum, csum_size) != 0) {
btrfs_print_data_csum_error(inode, disk_start, btrfs_print_data_csum_error(inode, disk_start,
......
...@@ -286,9 +286,8 @@ static int insert_inline_extent(struct btrfs_trans_handle *trans, ...@@ -286,9 +286,8 @@ static int insert_inline_extent(struct btrfs_trans_handle *trans,
cur_size = min_t(unsigned long, compressed_size, cur_size = min_t(unsigned long, compressed_size,
PAGE_SIZE); PAGE_SIZE);
kaddr = kmap_atomic(cpage); kaddr = page_address(cpage);
write_extent_buffer(leaf, kaddr, ptr, cur_size); write_extent_buffer(leaf, kaddr, ptr, cur_size);
kunmap_atomic(kaddr);
i++; i++;
ptr += cur_size; ptr += cur_size;
......
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