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author | Jens Axboe <jens.axboe@oracle.com> | 2007-10-24 11:20:47 +0200 |
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committer | Jens Axboe <jens.axboe@oracle.com> | 2007-10-24 11:20:47 +0200 |
commit | 642f149031d70415d9318b919d50b71e4724adbd (patch) | |
tree | e792ad29dedffc6756d55e9d63e18ada35515b4b /fs/ecryptfs/crypto.c | |
parent | bd6dee6f30a0f6943df190b387b5f8fe98a848f3 (diff) | |
download | kernel_samsung_smdk4412-642f149031d70415d9318b919d50b71e4724adbd.zip kernel_samsung_smdk4412-642f149031d70415d9318b919d50b71e4724adbd.tar.gz kernel_samsung_smdk4412-642f149031d70415d9318b919d50b71e4724adbd.tar.bz2 |
SG: Change sg_set_page() to take length and offset argument
Most drivers need to set length and offset as well, so may as well fold
those three lines into one.
Add sg_assign_page() for those two locations that only needed to set
the page, where the offset/length is set outside of the function context.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs/ecryptfs/crypto.c')
-rw-r--r-- | fs/ecryptfs/crypto.c | 23 |
1 files changed, 7 insertions, 16 deletions
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index 0a9882e..7a472b1 100644 --- a/fs/ecryptfs/crypto.c +++ b/fs/ecryptfs/crypto.c @@ -282,10 +282,8 @@ int virt_to_scatterlist(const void *addr, int size, struct scatterlist *sg, while (size > 0 && i < sg_size) { pg = virt_to_page(addr); offset = offset_in_page(addr); - if (sg) { - sg_set_page(&sg[i], pg); - sg[i].offset = offset; - } + if (sg) + sg_set_page(&sg[i], pg, 0, offset); remainder_of_page = PAGE_CACHE_SIZE - offset; if (size >= remainder_of_page) { if (sg) @@ -716,12 +714,8 @@ ecryptfs_encrypt_page_offset(struct ecryptfs_crypt_stat *crypt_stat, sg_init_table(&src_sg, 1); sg_init_table(&dst_sg, 1); - sg_set_page(&src_sg, src_page); - src_sg.offset = src_offset; - src_sg.length = size; - sg_set_page(&dst_sg, dst_page); - dst_sg.offset = dst_offset; - dst_sg.length = size; + sg_set_page(&src_sg, src_page, size, src_offset); + sg_set_page(&dst_sg, dst_page, size, dst_offset); return encrypt_scatterlist(crypt_stat, &dst_sg, &src_sg, size, iv); } @@ -746,14 +740,11 @@ ecryptfs_decrypt_page_offset(struct ecryptfs_crypt_stat *crypt_stat, struct scatterlist src_sg, dst_sg; sg_init_table(&src_sg, 1); + sg_set_page(&src_sg, src_page, size, src_offset); + sg_init_table(&dst_sg, 1); + sg_set_page(&dst_sg, dst_page, size, dst_offset); - sg_set_page(&src_sg, src_page); - src_sg.offset = src_offset; - src_sg.length = size; - sg_set_page(&dst_sg, dst_page); - dst_sg.offset = dst_offset; - dst_sg.length = size; return decrypt_scatterlist(crypt_stat, &dst_sg, &src_sg, size, iv); } |