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infra: initialize IO transfer metadata correctly

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This commit is contained in:
Thomas Schoebel-Theuer 2013-04-16 10:01:45 +02:00
parent 27fd43cb31
commit 5a5ea9bc52
5 changed files with 11 additions and 4 deletions
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4
kernel/mars.h
View File

@ -164,8 +164,8 @@ struct mref_object {
struct mars_info {
loff_t current_size;
int transfer_order;
int transfer_size;
int tf_align; // transfer alignment constraint
int tf_min_size; // transfer is only possible in multiples of this
};
// brick stuff

2
kernel/mars_aio.c
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@ -879,6 +879,8 @@ static int aio_get_info(struct aio_output *output, struct mars_info *info)
!file->f_mapping->host))
return -EINVAL;
info->tf_align = 1;
info->tf_min_size = 1;
info->current_size = i_size_read(file->f_mapping->host);
MARS_DBG("determined file size = %lld\n", info->current_size);

3
kernel/mars_bio.c
View File

@ -224,6 +224,9 @@ static int bio_get_info(struct bio_output *output, struct mars_info *info)
status = -ENOENT;
goto done;
}
info->tf_align = 512;
info->tf_min_size = 512;
brick->total_size = inode->i_size;
info->current_size = brick->total_size;
MARS_DBG("determined device size = %lld\n", info->current_size);

4
kernel/mars_generic.c
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@ -68,8 +68,8 @@ EXPORT_SYMBOL_GPL(mref_type);
const struct meta mars_info_meta[] = {
META_INI(current_size, struct mars_info, FIELD_INT),
META_INI(transfer_order, struct mars_info, FIELD_INT),
META_INI(transfer_size, struct mars_info, FIELD_INT),
META_INI(tf_align, struct mars_info, FIELD_INT),
META_INI(tf_min_size, struct mars_info, FIELD_INT),
{}
};
EXPORT_SYMBOL_GPL(mars_info_meta);

2
kernel/mars_sio.c
View File

@ -480,6 +480,8 @@ static int sio_get_info(struct sio_output *output, struct mars_info *info)
if (unlikely(!file || !file->f_mapping || !file->f_mapping->host))
return -EINVAL;
info->tf_align = 1;
info->tf_min_size = 1;
info->current_size = i_size_read(file->f_mapping->host);
MARS_DBG("determined file size = %lld\n", info->current_size);
return 0;