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exofs: unindent exofs_sbi_read 

The original idea was that a mirror read can be sub-divided
to multiple devices. But this has very little gain and only
at very large IOes so it's not going to be implemented soon.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
This commit is contained in:
Boaz Harrosh 2010-02-01 11:37:30 +02:00
parent 45d3abcb1a
commit 46f4d973f6
1 changed files with 39 additions and 50 deletions
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89
fs/exofs/ios.c
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@ -356,59 +356,48 @@ out:
int exofs_sbi_read(struct exofs_io_state *ios) int exofs_sbi_read(struct exofs_io_state *ios)
{ {
int i, ret; struct osd_request *or;
struct exofs_per_dev_state *per_dev = &ios->per_dev[0];
unsigned first_dev = (unsigned)ios->obj.id;
for (i = 0; i < 1; i++) { first_dev %= ios->layout->s_numdevs;
struct osd_request *or; or = osd_start_request(ios->layout->s_ods[first_dev], GFP_KERNEL);
unsigned first_dev = (unsigned)ios->obj.id; if (unlikely(!or)) {
EXOFS_ERR("%s: osd_start_request failed\n", __func__);
first_dev %= ios->layout->s_numdevs; return -ENOMEM;
or = osd_start_request(ios->layout->s_ods[first_dev],
GFP_KERNEL);
if (unlikely(!or)) {
EXOFS_ERR("%s: osd_start_request failed\n", __func__);
ret = -ENOMEM;
goto out;
}
ios->per_dev[i].or = or;
ios->numdevs++;
if (ios->bio) {
osd_req_read(or, &ios->obj, ios->offset, ios->bio,
ios->length);
EXOFS_DBGMSG("read(0x%llx) offset=0x%llx length=0x%llx"
" dev=%d\n", _LLU(ios->obj.id),
_LLU(ios->offset),
_LLU(ios->length),
first_dev);
} else if (ios->kern_buff) {
osd_req_read_kern(or, &ios->obj, ios->offset,
ios->kern_buff, ios->length);
EXOFS_DBGMSG2("read_kern(0x%llx) offset=0x%llx "
"length=0x%llx dev=%d\n",
_LLU(ios->obj.id),
_LLU(ios->offset),
_LLU(ios->length),
first_dev);
} else {
osd_req_get_attributes(or, &ios->obj);
EXOFS_DBGMSG2("obj(0x%llx) get_attributes=%d dev=%d\n",
_LLU(ios->obj.id), ios->in_attr_len,
first_dev);
}
if (ios->out_attr)
osd_req_add_set_attr_list(or, ios->out_attr,
ios->out_attr_len);
if (ios->in_attr)
osd_req_add_get_attr_list(or, ios->in_attr,
ios->in_attr_len);
} }
ret = exofs_io_execute(ios); per_dev->or = or;
ios->numdevs++;
out: if (ios->bio) {
return ret; osd_req_read(or, &ios->obj, ios->offset, ios->bio, ios->length);
EXOFS_DBGMSG("read(0x%llx) offset=0x%llx length=0x%llx"
" dev=%d\n", _LLU(ios->obj.id),
_LLU(ios->offset), _LLU(ios->length),
first_dev);
} else if (ios->kern_buff) {
int ret = osd_req_read_kern(or, &ios->obj, ios->offset,
ios->kern_buff, ios->length);
EXOFS_DBGMSG2("read_kern(0x%llx) offset=0x%llx "
"length=0x%llx dev=%d ret=>%d\n",
_LLU(ios->obj.id), _LLU(ios->offset),
_LLU(ios->length), first_dev, ret);
if (unlikely(ret))
return ret;
} else {
osd_req_get_attributes(or, &ios->obj);
EXOFS_DBGMSG2("obj(0x%llx) get_attributes=%d dev=%d\n",
_LLU(ios->obj.id), ios->in_attr_len, first_dev);
}
if (ios->out_attr)
osd_req_add_set_attr_list(or, ios->out_attr, ios->out_attr_len);
if (ios->in_attr)
osd_req_add_get_attr_list(or, ios->in_attr, ios->in_attr_len);
return exofs_io_execute(ios);
} }
int extract_attr_from_ios(struct exofs_io_state *ios, struct osd_attr *attr) int extract_attr_from_ios(struct exofs_io_state *ios, struct osd_attr *attr)