diff options
Diffstat (limited to 'fs/ubifs')
| -rw-r--r-- | fs/ubifs/io.c | 42 | ||||
| -rw-r--r-- | fs/ubifs/ubifs.h | 2 |
2 files changed, 29 insertions, 15 deletions
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c index 099bec94b820..4bd61fe146e0 100644 --- a/fs/ubifs/io.c +++ b/fs/ubifs/io.c @@ -365,20 +365,8 @@ static unsigned long long next_sqnum(struct ubifs_info *c) return sqnum; } -/** - * ubifs_prepare_node - prepare node to be written to flash. - * @c: UBIFS file-system description object - * @node: the node to pad - * @len: node length - * @pad: if the buffer has to be padded - * - * This function prepares node at @node to be written to the media - it - * calculates node CRC, fills the common header, and adds proper padding up to - * the next minimum I/O unit if @pad is not zero. - */ -void ubifs_prepare_node(struct ubifs_info *c, void *node, int len, int pad) +void ubifs_init_node(struct ubifs_info *c, void *node, int len, int pad) { - uint32_t crc; struct ubifs_ch *ch = node; unsigned long long sqnum = next_sqnum(c); @@ -389,8 +377,6 @@ void ubifs_prepare_node(struct ubifs_info *c, void *node, int len, int pad) ch->group_type = UBIFS_NO_NODE_GROUP; ch->sqnum = cpu_to_le64(sqnum); ch->padding[0] = ch->padding[1] = 0; - crc = crc32(UBIFS_CRC32_INIT, node + 8, len - 8); - ch->crc = cpu_to_le32(crc); if (pad) { len = ALIGN(len, 8); @@ -399,6 +385,32 @@ void ubifs_prepare_node(struct ubifs_info *c, void *node, int len, int pad) } } +void ubifs_crc_node(struct ubifs_info *c, void *node, int len) +{ + struct ubifs_ch *ch = node; + uint32_t crc; + + crc = crc32(UBIFS_CRC32_INIT, node + 8, len - 8); + ch->crc = cpu_to_le32(crc); +} + +/** + * ubifs_prepare_node - prepare node to be written to flash. + * @c: UBIFS file-system description object + * @node: the node to pad + * @len: node length + * @pad: if the buffer has to be padded + * + * This function prepares node at @node to be written to the media - it + * calculates node CRC, fills the common header, and adds proper padding up to + * the next minimum I/O unit if @pad is not zero. + */ +void ubifs_prepare_node(struct ubifs_info *c, void *node, int len, int pad) +{ + ubifs_init_node(c, node, len, pad); + ubifs_crc_node(c, node, len); +} + /** * ubifs_prep_grp_node - prepare node of a group to be written to flash. * @c: UBIFS file-system description object diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 93e1c34c097f..0422865661b1 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -1494,6 +1494,8 @@ int ubifs_write_node(struct ubifs_info *c, void *node, int len, int lnum, int offs); int ubifs_check_node(const struct ubifs_info *c, const void *buf, int lnum, int offs, int quiet, int must_chk_crc); +void ubifs_init_node(struct ubifs_info *c, void *buf, int len, int pad); +void ubifs_crc_node(struct ubifs_info *c, void *buf, int len); void ubifs_prepare_node(struct ubifs_info *c, void *buf, int len, int pad); void ubifs_prep_grp_node(struct ubifs_info *c, void *node, int len, int last); int ubifs_io_init(struct ubifs_info *c); |