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squashfs: use bvec_virt 

Use bvec_virt instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210804095634.460779-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-08-04 11:56:25 +02:00 committed by Jens Axboe
parent 964cacfdd3
commit fbc27241e5
6 changed files with 8 additions and 9 deletions
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7
fs/squashfs/block.c
View File

@ -49,8 +49,7 @@ static int copy_bio_to_actor(struct bio *bio,
bytes_to_copy = min_t(int, bytes_to_copy,
req_length - copied_bytes);
memcpy(actor_addr + actor_offset,
page_address(bvec->bv_page) + bvec->bv_offset + offset,
memcpy(actor_addr + actor_offset, bvec_virt(bvec) + offset,
bytes_to_copy);
actor_offset += bytes_to_copy;
@ -177,7 +176,7 @@ int squashfs_read_data(struct super_block *sb, u64 index, int length,
goto out_free_bio;
}
/* Extract the length of the metadata block */
data = page_address(bvec->bv_page) + bvec->bv_offset;
data = bvec_virt(bvec);
length = data[offset];
if (offset < bvec->bv_len - 1) {
length |= data[offset + 1] << 8;
@ -186,7 +185,7 @@ int squashfs_read_data(struct super_block *sb, u64 index, int length,
res = -EIO;
goto out_free_bio;
}
data = page_address(bvec->bv_page) + bvec->bv_offset;
data = bvec_virt(bvec);
length |= data[0] << 8;
}
bio_free_pages(bio);

2
fs/squashfs/lz4_wrapper.c
View File

@ -101,7 +101,7 @@ static int lz4_uncompress(struct squashfs_sb_info *msblk, void *strm,
while (bio_next_segment(bio, &iter_all)) {
int avail = min(bytes, ((int)bvec->bv_len) - offset);
data = page_address(bvec->bv_page) + bvec->bv_offset;
data = bvec_virt(bvec);
memcpy(buff, data + offset, avail);
buff += avail;
bytes -= avail;

2
fs/squashfs/lzo_wrapper.c
View File

@ -76,7 +76,7 @@ static int lzo_uncompress(struct squashfs_sb_info *msblk, void *strm,
while (bio_next_segment(bio, &iter_all)) {
int avail = min(bytes, ((int)bvec->bv_len) - offset);
data = page_address(bvec->bv_page) + bvec->bv_offset;
data = bvec_virt(bvec);
memcpy(buff, data + offset, avail);
buff += avail;
bytes -= avail;

2
fs/squashfs/xz_wrapper.c
View File

@ -146,7 +146,7 @@ static int squashfs_xz_uncompress(struct squashfs_sb_info *msblk, void *strm,
}
avail = min(length, ((int)bvec->bv_len) - offset);
data = page_address(bvec->bv_page) + bvec->bv_offset;
data = bvec_virt(bvec);
length -= avail;
stream->buf.in = data + offset;
stream->buf.in_size = avail;

2
fs/squashfs/zlib_wrapper.c
View File

@ -76,7 +76,7 @@ static int zlib_uncompress(struct squashfs_sb_info *msblk, void *strm,
}
avail = min(length, ((int)bvec->bv_len) - offset);
data = page_address(bvec->bv_page) + bvec->bv_offset;
data = bvec_virt(bvec);
length -= avail;
stream->next_in = data + offset;
stream->avail_in = avail;

2
fs/squashfs/zstd_wrapper.c
View File

@ -94,7 +94,7 @@ static int zstd_uncompress(struct squashfs_sb_info *msblk, void *strm,
}
avail = min(length, ((int)bvec->bv_len) - offset);
data = page_address(bvec->bv_page) + bvec->bv_offset;
data = bvec_virt(bvec);
length -= avail;
in_buf.src = data + offset;
in_buf.size = avail;