#include "exofs.h"
-#ifdef CONFIG_EXOFS_DEBUG
-# define EXOFS_DEBUG_OBJ_ISIZE 1
-#endif
-
#define EXOFS_DBGMSG2(M...) do {} while (0)
+enum { BIO_MAX_PAGES_KMALLOC =
+ (PAGE_SIZE - sizeof(struct bio)) / sizeof(struct bio_vec),
+};
+
struct page_collect {
struct exofs_sb_info *sbi;
struct request_queue *req_q;
struct inode *inode;
unsigned expected_pages;
+ struct exofs_io_state *ios;
struct bio *bio;
unsigned nr_pages;
};
static void _pcol_init(struct page_collect *pcol, unsigned expected_pages,
- struct inode *inode)
+ struct inode *inode)
{
struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
pcol->inode = inode;
pcol->expected_pages = expected_pages;
+ pcol->ios = NULL;
pcol->bio = NULL;
pcol->nr_pages = 0;
pcol->length = 0;
pcol->pg_first = -1;
-
- EXOFS_DBGMSG("_pcol_init ino=0x%lx expected_pages=%u\n", inode->i_ino,
- expected_pages);
}
static void _pcol_reset(struct page_collect *pcol)
pcol->nr_pages = 0;
pcol->length = 0;
pcol->pg_first = -1;
- EXOFS_DBGMSG("_pcol_reset ino=0x%lx expected_pages=%u\n",
- pcol->inode->i_ino, pcol->expected_pages);
+ pcol->ios = NULL;
/* this is probably the end of the loop but in writes
* it might not end here. don't be left with nothing
*/
if (!pcol->expected_pages)
- pcol->expected_pages = 128;
+ pcol->expected_pages = BIO_MAX_PAGES_KMALLOC;
}
static int pcol_try_alloc(struct page_collect *pcol)
{
- int pages = min_t(unsigned, pcol->expected_pages, BIO_MAX_PAGES);
+ int pages = min_t(unsigned, pcol->expected_pages,
+ BIO_MAX_PAGES_KMALLOC);
+
+ if (!pcol->ios) { /* First time allocate io_state */
+ int ret = exofs_get_io_state(pcol->sbi, &pcol->ios);
+
+ if (ret)
+ return ret;
+ }
for (; pages; pages >>= 1) {
- pcol->bio = bio_alloc(GFP_KERNEL, pages);
+ pcol->bio = bio_kmalloc(GFP_KERNEL, pages);
if (likely(pcol->bio))
return 0;
}
- EXOFS_ERR("Failed to kcalloc expected_pages=%u\n",
+ EXOFS_ERR("Failed to bio_kmalloc expected_pages=%u\n",
pcol->expected_pages);
return -ENOMEM;
}
static void pcol_free(struct page_collect *pcol)
{
- bio_put(pcol->bio);
- pcol->bio = NULL;
+ if (pcol->bio) {
+ bio_put(pcol->bio);
+ pcol->bio = NULL;
+ }
+
+ if (pcol->ios) {
+ exofs_put_io_state(pcol->ios);
+ pcol->ios = NULL;
+ }
}
static int pcol_add_page(struct page_collect *pcol, struct page *page,
/* Called at the end of reads, to optionally unlock pages and update their
* status.
*/
-static int __readpages_done(struct osd_request *or, struct page_collect *pcol,
- bool do_unlock)
+static int __readpages_done(struct page_collect *pcol, bool do_unlock)
{
struct bio_vec *bvec;
int i;
u64 resid;
u64 good_bytes;
u64 length = 0;
- int ret = exofs_check_ok_resid(or, &resid, NULL);
-
- osd_end_request(or);
+ int ret = exofs_check_io(pcol->ios, &resid);
if (likely(!ret))
good_bytes = pcol->length;
- else if (!resid)
- good_bytes = 0;
else
good_bytes = pcol->length - resid;
}
/* callback of async reads */
-static void readpages_done(struct osd_request *or, void *p)
+static void readpages_done(struct exofs_io_state *ios, void *p)
{
struct page_collect *pcol = p;
- __readpages_done(or, pcol, true);
+ __readpages_done(pcol, true);
atomic_dec(&pcol->sbi->s_curr_pending);
- kfree(p);
+ kfree(pcol);
}
static void _unlock_pcol_pages(struct page_collect *pcol, int ret, int rw)
unlock_page(page);
}
- pcol_free(pcol);
}
static int read_exec(struct page_collect *pcol, bool is_sync)
{
struct exofs_i_info *oi = exofs_i(pcol->inode);
- struct osd_obj_id obj = {pcol->sbi->s_pid,
- pcol->inode->i_ino + EXOFS_OBJ_OFF};
- struct osd_request *or = NULL;
+ struct exofs_io_state *ios = pcol->ios;
struct page_collect *pcol_copy = NULL;
- loff_t i_start = pcol->pg_first << PAGE_CACHE_SHIFT;
int ret;
if (!pcol->bio)
/* see comment in _readpage() about sync reads */
WARN_ON(is_sync && (pcol->nr_pages != 1));
- or = osd_start_request(pcol->sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- ret = -ENOMEM;
- goto err;
- }
-
- osd_req_read(or, &obj, i_start, pcol->bio, pcol->length);
+ ios->bio = pcol->bio;
+ ios->length = pcol->length;
+ ios->offset = pcol->pg_first << PAGE_CACHE_SHIFT;
if (is_sync) {
- exofs_sync_op(or, pcol->sbi->s_timeout, oi->i_cred);
- return __readpages_done(or, pcol, false);
+ exofs_oi_read(oi, pcol->ios);
+ return __readpages_done(pcol, false);
}
pcol_copy = kmalloc(sizeof(*pcol_copy), GFP_KERNEL);
}
*pcol_copy = *pcol;
- ret = exofs_async_op(or, readpages_done, pcol_copy, oi->i_cred);
+ ios->done = readpages_done;
+ ios->private = pcol_copy;
+ ret = exofs_oi_read(oi, ios);
if (unlikely(ret))
goto err;
atomic_inc(&pcol->sbi->s_curr_pending);
EXOFS_DBGMSG("read_exec obj=0x%llx start=0x%llx length=0x%lx\n",
- obj.id, _LLU(i_start), pcol->length);
+ ios->obj.id, _LLU(ios->offset), pcol->length);
/* pages ownership was passed to pcol_copy */
_pcol_reset(pcol);
err:
if (!is_sync)
_unlock_pcol_pages(pcol, ret, READ);
- else /* Pages unlocked by caller in sync mode only free bio */
- pcol_free(pcol);
+
+ pcol_free(pcol);
kfree(pcol_copy);
- if (or)
- osd_end_request(or);
return ret;
}
_pcol_init(&pcol, 1, page->mapping->host);
- /* readpage_strip might call read_exec(,async) inside at several places
- * but this is safe for is_async=0 since read_exec will not do anything
- * when we have a single page.
+ /* readpage_strip might call read_exec(,is_sync==false) at several
+ * places but not if we have a single page.
*/
ret = readpage_strip(&pcol, page);
if (ret) {
return _readpage(page, false);
}
-/* Callback for osd_write. All writes are asynchronouse */
-static void writepages_done(struct osd_request *or, void *p)
+/* Callback for osd_write. All writes are asynchronous */
+static void writepages_done(struct exofs_io_state *ios, void *p)
{
struct page_collect *pcol = p;
struct bio_vec *bvec;
u64 resid;
u64 good_bytes;
u64 length = 0;
+ int ret = exofs_check_io(ios, &resid);
- int ret = exofs_check_ok_resid(or, NULL, &resid);
-
- osd_end_request(or);
atomic_dec(&pcol->sbi->s_curr_pending);
if (likely(!ret))
good_bytes = pcol->length;
- else if (!resid)
- good_bytes = 0;
else
good_bytes = pcol->length - resid;
static int write_exec(struct page_collect *pcol)
{
struct exofs_i_info *oi = exofs_i(pcol->inode);
- struct osd_obj_id obj = {pcol->sbi->s_pid,
- pcol->inode->i_ino + EXOFS_OBJ_OFF};
- struct osd_request *or = NULL;
+ struct exofs_io_state *ios = pcol->ios;
struct page_collect *pcol_copy = NULL;
- loff_t i_start = pcol->pg_first << PAGE_CACHE_SHIFT;
int ret;
if (!pcol->bio)
return 0;
- or = osd_start_request(pcol->sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("write_exec: Faild to osd_start_request()\n");
- ret = -ENOMEM;
- goto err;
- }
-
pcol_copy = kmalloc(sizeof(*pcol_copy), GFP_KERNEL);
if (!pcol_copy) {
EXOFS_ERR("write_exec: Faild to kmalloc(pcol)\n");
*pcol_copy = *pcol;
pcol_copy->bio->bi_rw |= (1 << BIO_RW); /* FIXME: bio_set_dir() */
- osd_req_write(or, &obj, i_start, pcol_copy->bio, pcol_copy->length);
- ret = exofs_async_op(or, writepages_done, pcol_copy, oi->i_cred);
+
+ ios->bio = pcol_copy->bio;
+ ios->offset = pcol_copy->pg_first << PAGE_CACHE_SHIFT;
+ ios->length = pcol_copy->length;
+ ios->done = writepages_done;
+ ios->private = pcol_copy;
+
+ ret = exofs_oi_write(oi, ios);
if (unlikely(ret)) {
- EXOFS_ERR("write_exec: exofs_async_op() Faild\n");
+ EXOFS_ERR("write_exec: exofs_oi_write() Faild\n");
goto err;
}
atomic_inc(&pcol->sbi->s_curr_pending);
EXOFS_DBGMSG("write_exec(0x%lx, 0x%llx) start=0x%llx length=0x%lx\n",
- pcol->inode->i_ino, pcol->pg_first, _LLU(i_start),
+ pcol->inode->i_ino, pcol->pg_first, _LLU(ios->offset),
pcol->length);
/* pages ownership was passed to pcol_copy */
_pcol_reset(pcol);
err:
_unlock_pcol_pages(pcol, ret, WRITE);
+ pcol_free(pcol);
kfree(pcol_copy);
- if (or)
- osd_end_request(or);
+
return ret;
}
if (PageError(page))
ClearPageError(page);
unlock_page(page);
+ EXOFS_DBGMSG("writepage_strip(0x%lx, 0x%lx) "
+ "outside the limits\n",
+ inode->i_ino, page->index);
return 0;
}
}
ret = write_exec(pcol);
if (unlikely(ret))
goto fail;
+
+ EXOFS_DBGMSG("writepage_strip(0x%lx, 0x%lx) Discontinuity\n",
+ inode->i_ino, page->index);
goto try_again;
}
return 0;
fail:
+ EXOFS_DBGMSG("Error: writepage_strip(0x%lx, 0x%lx)=>%d\n",
+ inode->i_ino, page->index, ret);
set_bit(AS_EIO, &page->mapping->flags);
unlock_page(page);
return ret;
wbc->range_end >> PAGE_CACHE_SHIFT;
if (start || end)
- expected_pages = min(end - start + 1, 32L);
+ expected_pages = end - start + 1;
else
expected_pages = mapping->nrpages;
- EXOFS_DBGMSG("inode(0x%lx) wbc->start=0x%llx wbc->end=0x%llx"
- " m->nrpages=%lu start=0x%lx end=0x%lx\n",
+ if (expected_pages < 32L)
+ expected_pages = 32L;
+
+ EXOFS_DBGMSG("inode(0x%lx) wbc->start=0x%llx wbc->end=0x%llx "
+ "nrpages=%lu start=0x%lx end=0x%lx expected_pages=%ld\n",
mapping->host->i_ino, wbc->range_start, wbc->range_end,
- mapping->nrpages, start, end);
+ mapping->nrpages, start, end, expected_pages);
_pcol_init(&pcol, expected_pages, mapping->host);
const struct osd_attr g_attr_logical_length = ATTR_DEF(
OSD_APAGE_OBJECT_INFORMATION, OSD_ATTR_OI_LOGICAL_LENGTH, 8);
+static int _do_truncate(struct inode *inode)
+{
+ struct exofs_i_info *oi = exofs_i(inode);
+ loff_t isize = i_size_read(inode);
+ int ret;
+
+ inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+
+ nobh_truncate_page(inode->i_mapping, isize, exofs_get_block);
+
+ ret = exofs_oi_truncate(oi, (u64)isize);
+ EXOFS_DBGMSG("(0x%lx) size=0x%llx\n", inode->i_ino, isize);
+ return ret;
+}
+
/*
* Truncate a file to the specified size - all we have to do is set the size
* attribute. We make sure the object exists first.
*/
void exofs_truncate(struct inode *inode)
{
- struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
struct exofs_i_info *oi = exofs_i(inode);
- struct osd_obj_id obj = {sbi->s_pid, inode->i_ino + EXOFS_OBJ_OFF};
- struct osd_request *or;
- struct osd_attr attr;
- loff_t isize = i_size_read(inode);
- __be64 newsize;
int ret;
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)
return;
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return;
- inode->i_mtime = inode->i_ctime = CURRENT_TIME;
-
- nobh_truncate_page(inode->i_mapping, isize, exofs_get_block);
-
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("ERROR: exofs_truncate: osd_start_request failed\n");
- goto fail;
- }
-
- osd_req_set_attributes(or, &obj);
-
- newsize = cpu_to_be64((u64)isize);
- attr = g_attr_logical_length;
- attr.val_ptr = &newsize;
- osd_req_add_set_attr_list(or, &attr, 1);
/* if we are about to truncate an object, and it hasn't been
* created yet, wait
if (unlikely(wait_obj_created(oi)))
goto fail;
- ret = exofs_sync_op(or, sbi->s_timeout, oi->i_cred);
- osd_end_request(or);
+ ret = _do_truncate(inode);
if (ret)
goto fail;
/*
* Read an inode from the OSD, and return it as is. We also return the size
- * attribute in the 'sanity' argument if we got compiled with debugging turned
- * on.
+ * attribute in the 'obj_size' argument.
*/
static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi,
- struct exofs_fcb *inode, uint64_t *sanity)
+ struct exofs_fcb *inode, uint64_t *obj_size)
{
struct exofs_sb_info *sbi = sb->s_fs_info;
- struct osd_request *or;
- struct osd_attr attr;
- struct osd_obj_id obj = {sbi->s_pid,
- oi->vfs_inode.i_ino + EXOFS_OBJ_OFF};
+ struct osd_attr attrs[2];
+ struct exofs_io_state *ios;
int ret;
- exofs_make_credential(oi->i_cred, &obj);
-
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("exofs_get_inode: osd_start_request failed.\n");
- return -ENOMEM;
+ *obj_size = ~0;
+ ret = exofs_get_io_state(sbi, &ios);
+ if (unlikely(ret)) {
+ EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
+ return ret;
}
- osd_req_get_attributes(or, &obj);
- /* we need the inode attribute */
- osd_req_add_get_attr_list(or, &g_attr_inode_data, 1);
+ ios->obj.id = exofs_oi_objno(oi);
+ exofs_make_credential(oi->i_cred, &ios->obj);
+ ios->cred = oi->i_cred;
-#ifdef EXOFS_DEBUG_OBJ_ISIZE
- /* we get the size attributes to do a sanity check */
- osd_req_add_get_attr_list(or, &g_attr_logical_length, 1);
-#endif
+ attrs[0] = g_attr_inode_data;
+ attrs[1] = g_attr_logical_length;
+ ios->in_attr = attrs;
+ ios->in_attr_len = ARRAY_SIZE(attrs);
- ret = exofs_sync_op(or, sbi->s_timeout, oi->i_cred);
+ ret = exofs_sbi_read(ios);
if (ret)
goto out;
- attr = g_attr_inode_data;
- ret = extract_attr_from_req(or, &attr);
+ ret = extract_attr_from_ios(ios, &attrs[0]);
if (ret) {
- EXOFS_ERR("exofs_get_inode: extract_attr_from_req failed\n");
+ EXOFS_ERR("%s: extract_attr of inode_data failed\n", __func__);
goto out;
}
+ WARN_ON(attrs[0].len != EXOFS_INO_ATTR_SIZE);
+ memcpy(inode, attrs[0].val_ptr, EXOFS_INO_ATTR_SIZE);
- WARN_ON(attr.len != EXOFS_INO_ATTR_SIZE);
- memcpy(inode, attr.val_ptr, EXOFS_INO_ATTR_SIZE);
-
-#ifdef EXOFS_DEBUG_OBJ_ISIZE
- attr = g_attr_logical_length;
- ret = extract_attr_from_req(or, &attr);
+ ret = extract_attr_from_ios(ios, &attrs[1]);
if (ret) {
- EXOFS_ERR("ERROR: extract attr from or failed\n");
+ EXOFS_ERR("%s: extract_attr of logical_length failed\n",
+ __func__);
goto out;
}
- *sanity = get_unaligned_be64(attr.val_ptr);
-#endif
+ *obj_size = get_unaligned_be64(attrs[1].val_ptr);
out:
- osd_end_request(or);
+ exofs_put_io_state(ios);
return ret;
}
-
static void __oi_init(struct exofs_i_info *oi)
{
init_waitqueue_head(&oi->i_wq);
struct exofs_i_info *oi;
struct exofs_fcb fcb;
struct inode *inode;
- uint64_t uninitialized_var(sanity);
+ uint64_t obj_size;
int ret;
inode = iget_locked(sb, ino);
__oi_init(oi);
/* read the inode from the osd */
- ret = exofs_get_inode(sb, oi, &fcb, &sanity);
+ ret = exofs_get_inode(sb, oi, &fcb, &obj_size);
if (ret)
goto bad_inode;
inode->i_blkbits = EXOFS_BLKSHIFT;
inode->i_generation = le32_to_cpu(fcb.i_generation);
-#ifdef EXOFS_DEBUG_OBJ_ISIZE
- if ((inode->i_size != sanity) &&
+ if ((inode->i_size != obj_size) &&
(!exofs_inode_is_fast_symlink(inode))) {
EXOFS_ERR("WARNING: Size of inode=%llu != object=%llu\n",
- inode->i_size, _LLU(sanity));
+ inode->i_size, _LLU(obj_size));
+ /* FIXME: call exofs_inode_recovery() */
}
-#endif
oi->i_dir_start_lookup = 0;
* set the obj_created flag so that other methods know that the object exists on
* the OSD.
*/
-static void create_done(struct osd_request *or, void *p)
+static void create_done(struct exofs_io_state *ios, void *p)
{
struct inode *inode = p;
struct exofs_i_info *oi = exofs_i(inode);
struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
int ret;
- ret = exofs_check_ok(or);
- osd_end_request(or);
+ ret = exofs_check_io(ios, NULL);
+ exofs_put_io_state(ios);
+
atomic_dec(&sbi->s_curr_pending);
if (unlikely(ret)) {
EXOFS_ERR("object=0x%llx creation faild in pid=0x%llx",
- _LLU(sbi->s_pid), _LLU(inode->i_ino + EXOFS_OBJ_OFF));
- make_bad_inode(inode);
- } else
- set_obj_created(oi);
+ _LLU(exofs_oi_objno(oi)), _LLU(sbi->s_pid));
+ /*TODO: When FS is corrupted creation can fail, object already
+ * exist. Get rid of this asynchronous creation, if exist
+ * increment the obj counter and try the next object. Until we
+ * succeed. All these dangling objects will be made into lost
+ * files by chkfs.exofs
+ */
+ }
+
+ set_obj_created(oi);
atomic_dec(&inode->i_count);
wake_up(&oi->i_wq);
struct inode *inode;
struct exofs_i_info *oi;
struct exofs_sb_info *sbi;
- struct osd_request *or;
- struct osd_obj_id obj;
+ struct exofs_io_state *ios;
int ret;
sb = dir->i_sb;
mark_inode_dirty(inode);
- obj.partition = sbi->s_pid;
- obj.id = inode->i_ino + EXOFS_OBJ_OFF;
- exofs_make_credential(oi->i_cred, &obj);
-
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("exofs_new_inode: osd_start_request failed\n");
- return ERR_PTR(-ENOMEM);
+ ret = exofs_get_io_state(sbi, &ios);
+ if (unlikely(ret)) {
+ EXOFS_ERR("exofs_new_inode: exofs_get_io_state failed\n");
+ return ERR_PTR(ret);
}
- osd_req_create_object(or, &obj);
+ ios->obj.id = exofs_oi_objno(oi);
+ exofs_make_credential(oi->i_cred, &ios->obj);
/* increment the refcount so that the inode will still be around when we
* reach the callback
*/
atomic_inc(&inode->i_count);
- ret = exofs_async_op(or, create_done, inode, oi->i_cred);
+ ios->done = create_done;
+ ios->private = inode;
+ ios->cred = oi->i_cred;
+ ret = exofs_sbi_create(ios);
if (ret) {
atomic_dec(&inode->i_count);
- osd_end_request(or);
- return ERR_PTR(-EIO);
+ exofs_put_io_state(ios);
+ return ERR_PTR(ret);
}
atomic_inc(&sbi->s_curr_pending);
/*
* Callback function from exofs_update_inode().
*/
-static void updatei_done(struct osd_request *or, void *p)
+static void updatei_done(struct exofs_io_state *ios, void *p)
{
struct updatei_args *args = p;
- osd_end_request(or);
+ exofs_put_io_state(ios);
atomic_dec(&args->sbi->s_curr_pending);
struct exofs_i_info *oi = exofs_i(inode);
struct super_block *sb = inode->i_sb;
struct exofs_sb_info *sbi = sb->s_fs_info;
- struct osd_obj_id obj = {sbi->s_pid, inode->i_ino + EXOFS_OBJ_OFF};
- struct osd_request *or;
+ struct exofs_io_state *ios;
struct osd_attr attr;
struct exofs_fcb *fcb;
struct updatei_args *args;
} else
memcpy(fcb->i_data, oi->i_data, sizeof(fcb->i_data));
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("exofs_update_inode: osd_start_request failed.\n");
- ret = -ENOMEM;
+ ret = exofs_get_io_state(sbi, &ios);
+ if (unlikely(ret)) {
+ EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
goto free_args;
}
- osd_req_set_attributes(or, &obj);
-
attr = g_attr_inode_data;
attr.val_ptr = fcb;
- osd_req_add_set_attr_list(or, &attr, 1);
+ ios->out_attr_len = 1;
+ ios->out_attr = &attr;
if (!obj_created(oi)) {
EXOFS_DBGMSG("!obj_created\n");
EXOFS_DBGMSG("wait_event done\n");
}
- if (do_sync) {
- ret = exofs_sync_op(or, sbi->s_timeout, oi->i_cred);
- osd_end_request(or);
- goto free_args;
- } else {
+ if (!do_sync) {
args->sbi = sbi;
+ ios->done = updatei_done;
+ ios->private = args;
+ }
- ret = exofs_async_op(or, updatei_done, args, oi->i_cred);
- if (ret) {
- osd_end_request(or);
- goto free_args;
- }
+ ret = exofs_oi_write(oi, ios);
+ if (!do_sync && !ret) {
atomic_inc(&sbi->s_curr_pending);
goto out; /* deallocation in updatei_done */
}
+ exofs_put_io_state(ios);
free_args:
kfree(args);
out:
* Callback function from exofs_delete_inode() - don't have much cleaning up to
* do.
*/
-static void delete_done(struct osd_request *or, void *p)
+static void delete_done(struct exofs_io_state *ios, void *p)
{
- struct exofs_sb_info *sbi;
- osd_end_request(or);
- sbi = p;
+ struct exofs_sb_info *sbi = p;
+
+ exofs_put_io_state(ios);
+
atomic_dec(&sbi->s_curr_pending);
}
struct exofs_i_info *oi = exofs_i(inode);
struct super_block *sb = inode->i_sb;
struct exofs_sb_info *sbi = sb->s_fs_info;
- struct osd_obj_id obj = {sbi->s_pid, inode->i_ino + EXOFS_OBJ_OFF};
- struct osd_request *or;
+ struct exofs_io_state *ios;
int ret;
truncate_inode_pages(&inode->i_data, 0);
clear_inode(inode);
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("exofs_delete_inode: osd_start_request failed\n");
+ ret = exofs_get_io_state(sbi, &ios);
+ if (unlikely(ret)) {
+ EXOFS_ERR("%s: exofs_get_io_state failed\n", __func__);
return;
}
- osd_req_remove_object(or, &obj);
-
/* if we are deleting an obj that hasn't been created yet, wait */
if (!obj_created(oi)) {
BUG_ON(!obj_2bcreated(oi));
wait_event(oi->i_wq, obj_created(oi));
}
- ret = exofs_async_op(or, delete_done, sbi, oi->i_cred);
+ ios->obj.id = exofs_oi_objno(oi);
+ ios->done = delete_done;
+ ios->private = sbi;
+ ios->cred = oi->i_cred;
+ ret = exofs_sbi_remove(ios);
if (ret) {
- EXOFS_ERR(
- "ERROR: @exofs_delete_inode exofs_async_op failed\n");
- osd_end_request(or);
+ EXOFS_ERR("%s: exofs_sbi_remove failed\n", __func__);
+ exofs_put_io_state(ios);
return;
}
atomic_inc(&sbi->s_curr_pending);
*/
#include <scsi/scsi_device.h>
-#include <scsi/osd_sense.h>
#include "exofs.h"
-int exofs_check_ok_resid(struct osd_request *or, u64 *in_resid, u64 *out_resid)
+void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], const struct osd_obj_id *obj)
{
- struct osd_sense_info osi;
- int ret = osd_req_decode_sense(or, &osi);
-
- if (ret) { /* translate to Linux codes */
- if (osi.additional_code == scsi_invalid_field_in_cdb) {
- if (osi.cdb_field_offset == OSD_CFO_STARTING_BYTE)
- ret = -EFAULT;
- if (osi.cdb_field_offset == OSD_CFO_OBJECT_ID)
- ret = -ENOENT;
- else
- ret = -EINVAL;
- } else if (osi.additional_code == osd_quota_error)
- ret = -ENOSPC;
- else
- ret = -EIO;
+ osd_sec_init_nosec_doall_caps(cred_a, obj, false, true);
+}
+
+int exofs_read_kern(struct osd_dev *od, u8 *cred, struct osd_obj_id *obj,
+ u64 offset, void *p, unsigned length)
+{
+ struct osd_request *or = osd_start_request(od, GFP_KERNEL);
+/* struct osd_sense_info osi = {.key = 0};*/
+ int ret;
+
+ if (unlikely(!or)) {
+ EXOFS_DBGMSG("%s: osd_start_request failed.\n", __func__);
+ return -ENOMEM;
+ }
+ ret = osd_req_read_kern(or, obj, offset, p, length);
+ if (unlikely(ret)) {
+ EXOFS_DBGMSG("%s: osd_req_read_kern failed.\n", __func__);
+ goto out;
}
- /* FIXME: should be include in osd_sense_info */
- if (in_resid)
- *in_resid = or->in.req ? or->in.req->resid_len : 0;
+ ret = osd_finalize_request(or, 0, cred, NULL);
+ if (unlikely(ret)) {
+ EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n", ret);
+ goto out;
+ }
- if (out_resid)
- *out_resid = or->out.req ? or->out.req->resid_len : 0;
+ ret = osd_execute_request(or);
+ if (unlikely(ret))
+ EXOFS_DBGMSG("osd_execute_request() => %d\n", ret);
+ /* osd_req_decode_sense(or, ret); */
+out:
+ osd_end_request(or);
return ret;
}
-void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], const struct osd_obj_id *obj)
+int exofs_get_io_state(struct exofs_sb_info *sbi, struct exofs_io_state** pios)
{
- osd_sec_init_nosec_doall_caps(cred_a, obj, false, true);
+ struct exofs_io_state *ios;
+
+ /*TODO: Maybe use kmem_cach per sbi of size
+ * exofs_io_state_size(sbi->s_numdevs)
+ */
+ ios = kzalloc(exofs_io_state_size(1), GFP_KERNEL);
+ if (unlikely(!ios)) {
+ *pios = NULL;
+ return -ENOMEM;
+ }
+
+ ios->sbi = sbi;
+ ios->obj.partition = sbi->s_pid;
+ *pios = ios;
+ return 0;
}
-/*
- * Perform a synchronous OSD operation.
- */
-int exofs_sync_op(struct osd_request *or, int timeout, uint8_t *credential)
+void exofs_put_io_state(struct exofs_io_state *ios)
{
- int ret;
+ if (ios) {
+ unsigned i;
- or->timeout = timeout;
- ret = osd_finalize_request(or, 0, credential, NULL);
- if (ret) {
- EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n", ret);
- return ret;
+ for (i = 0; i < ios->numdevs; i++) {
+ struct exofs_per_dev_state *per_dev = &ios->per_dev[i];
+
+ if (per_dev->or)
+ osd_end_request(per_dev->or);
+ if (per_dev->bio)
+ bio_put(per_dev->bio);
+ }
+
+ kfree(ios);
}
+}
- ret = osd_execute_request(or);
+static void _sync_done(struct exofs_io_state *ios, void *p)
+{
+ struct completion *waiting = p;
- if (ret)
- EXOFS_DBGMSG("osd_execute_request() => %d\n", ret);
- /* osd_req_decode_sense(or, ret); */
+ complete(waiting);
+}
+
+static void _last_io(struct kref *kref)
+{
+ struct exofs_io_state *ios = container_of(
+ kref, struct exofs_io_state, kref);
+
+ ios->done(ios, ios->private);
+}
+
+static void _done_io(struct osd_request *or, void *p)
+{
+ struct exofs_io_state *ios = p;
+
+ kref_put(&ios->kref, _last_io);
+}
+
+static int exofs_io_execute(struct exofs_io_state *ios)
+{
+ DECLARE_COMPLETION_ONSTACK(wait);
+ bool sync = (ios->done == NULL);
+ int i, ret;
+
+ if (sync) {
+ ios->done = _sync_done;
+ ios->private = &wait;
+ }
+
+ for (i = 0; i < ios->numdevs; i++) {
+ struct osd_request *or = ios->per_dev[i].or;
+ if (unlikely(!or))
+ continue;
+
+ ret = osd_finalize_request(or, 0, ios->cred, NULL);
+ if (unlikely(ret)) {
+ EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ kref_init(&ios->kref);
+
+ for (i = 0; i < ios->numdevs; i++) {
+ struct osd_request *or = ios->per_dev[i].or;
+ if (unlikely(!or))
+ continue;
+
+ kref_get(&ios->kref);
+ osd_execute_request_async(or, _done_io, ios);
+ }
+
+ kref_put(&ios->kref, _last_io);
+ ret = 0;
+
+ if (sync) {
+ wait_for_completion(&wait);
+ ret = exofs_check_io(ios, NULL);
+ }
return ret;
}
-/*
- * Perform an asynchronous OSD operation.
- */
-int exofs_async_op(struct osd_request *or, osd_req_done_fn *async_done,
- void *caller_context, u8 *cred)
+int exofs_check_io(struct exofs_io_state *ios, u64 *resid)
{
- int ret;
+ enum osd_err_priority acumulated_osd_err = 0;
+ int acumulated_lin_err = 0;
+ int i;
- ret = osd_finalize_request(or, 0, cred, NULL);
- if (ret) {
- EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n", ret);
- return ret;
+ for (i = 0; i < ios->numdevs; i++) {
+ struct osd_sense_info osi;
+ int ret = osd_req_decode_sense(ios->per_dev[i].or, &osi);
+
+ if (likely(!ret))
+ continue;
+
+ if (unlikely(ret == -EFAULT)) {
+ EXOFS_DBGMSG("%s: EFAULT Need page clear\n", __func__);
+ /*FIXME: All the pages in this device range should:
+ * clear_highpage(page);
+ */
+ }
+
+ if (osi.osd_err_pri >= acumulated_osd_err) {
+ acumulated_osd_err = osi.osd_err_pri;
+ acumulated_lin_err = ret;
+ }
+ }
+
+ /* TODO: raid specific residual calculations */
+ if (resid) {
+ if (likely(!acumulated_lin_err))
+ *resid = 0;
+ else
+ *resid = ios->length;
+ }
+
+ return acumulated_lin_err;
+}
+
+int exofs_sbi_create(struct exofs_io_state *ios)
+{
+ int i, ret;
+
+ for (i = 0; i < 1; i++) {
+ struct osd_request *or;
+
+ or = osd_start_request(ios->sbi->s_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++;
+
+ osd_req_create_object(or, &ios->obj);
+ }
+ ret = exofs_io_execute(ios);
+
+out:
+ return ret;
+}
+
+int exofs_sbi_remove(struct exofs_io_state *ios)
+{
+ int i, ret;
+
+ for (i = 0; i < 1; i++) {
+ struct osd_request *or;
+
+ or = osd_start_request(ios->sbi->s_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++;
+
+ osd_req_remove_object(or, &ios->obj);
+ }
+ ret = exofs_io_execute(ios);
+
+out:
+ return ret;
+}
+
+int exofs_sbi_write(struct exofs_io_state *ios)
+{
+ int i, ret;
+
+ for (i = 0; i < 1; i++) {
+ struct osd_request *or;
+
+ or = osd_start_request(ios->sbi->s_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) {
+ struct bio *bio;
+
+ bio = ios->bio;
+
+ osd_req_write(or, &ios->obj, ios->offset, bio,
+ ios->length);
+/* EXOFS_DBGMSG("write sync=%d\n", sync);*/
+ } else if (ios->kern_buff) {
+ osd_req_write_kern(or, &ios->obj, ios->offset,
+ ios->kern_buff, ios->length);
+/* EXOFS_DBGMSG("write_kern sync=%d\n", sync);*/
+ } else {
+ osd_req_set_attributes(or, &ios->obj);
+/* EXOFS_DBGMSG("set_attributes sync=%d\n", sync);*/
+ }
+
+ 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);
+
+out:
+ return ret;
+}
+
+int exofs_sbi_read(struct exofs_io_state *ios)
+{
+ int i, ret;
+
+ for (i = 0; i < 1; i++) {
+ struct osd_request *or;
+
+ or = osd_start_request(ios->sbi->s_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 sync=%d\n", sync);*/
+ } else if (ios->kern_buff) {
+ osd_req_read_kern(or, &ios->obj, ios->offset,
+ ios->kern_buff, ios->length);
+/* EXOFS_DBGMSG("read_kern sync=%d\n", sync);*/
+ } else {
+ osd_req_get_attributes(or, &ios->obj);
+/* EXOFS_DBGMSG("get_attributes sync=%d\n", sync);*/
+ }
+
+ if (ios->out_attr)
+ osd_req_add_set_attr_list(or, ios->out_attr,
+ ios->out_attr_len);
- ret = osd_execute_request_async(or, async_done, caller_context);
+ if (ios->in_attr)
+ osd_req_add_get_attr_list(or, ios->in_attr,
+ ios->in_attr_len);
+ }
+ ret = exofs_io_execute(ios);
- if (ret)
- EXOFS_DBGMSG("osd_execute_request_async() => %d\n", ret);
+out:
return ret;
}
-int extract_attr_from_req(struct osd_request *or, struct osd_attr *attr)
+int extract_attr_from_ios(struct exofs_io_state *ios, struct osd_attr *attr)
{
struct osd_attr cur_attr = {.attr_page = 0}; /* start with zeros */
void *iter = NULL;
do {
nelem = 1;
- osd_req_decode_get_attr_list(or, &cur_attr, &nelem, &iter);
+ osd_req_decode_get_attr_list(ios->per_dev[0].or,
+ &cur_attr, &nelem, &iter);
if ((cur_attr.attr_page == attr->attr_page) &&
(cur_attr.attr_id == attr->attr_id)) {
attr->len = cur_attr.len;
return -EIO;
}
+
+int exofs_oi_truncate(struct exofs_i_info *oi, u64 size)
+{
+ struct exofs_sb_info *sbi = oi->vfs_inode.i_sb->s_fs_info;
+ struct exofs_io_state *ios;
+ struct osd_attr attr;
+ __be64 newsize;
+ int i, ret;
+
+ if (exofs_get_io_state(sbi, &ios))
+ return -ENOMEM;
+
+ ios->obj.id = exofs_oi_objno(oi);
+ ios->cred = oi->i_cred;
+
+ newsize = cpu_to_be64(size);
+ attr = g_attr_logical_length;
+ attr.val_ptr = &newsize;
+
+ for (i = 0; i < 1; i++) {
+ struct osd_request *or;
+
+ or = osd_start_request(sbi->s_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++;
+
+ osd_req_set_attributes(or, &ios->obj);
+ osd_req_add_set_attr_list(or, &attr, 1);
+ }
+ ret = exofs_io_execute(ios);
+
+out:
+ exofs_put_io_state(ios);
+ return ret;
+}
{
struct exofs_sb_info *sbi;
struct exofs_fscb *fscb;
- struct osd_request *or;
- struct osd_obj_id obj;
+ struct exofs_io_state *ios;
int ret = -ENOMEM;
- fscb = kzalloc(sizeof(struct exofs_fscb), GFP_KERNEL);
- if (!fscb) {
- EXOFS_ERR("exofs_write_super: memory allocation failed.\n");
- return -ENOMEM;
- }
-
lock_super(sb);
sbi = sb->s_fs_info;
+ fscb = &sbi->s_fscb;
+
+ ret = exofs_get_io_state(sbi, &ios);
+ if (ret)
+ goto out;
+
+ ios->length = sizeof(*fscb);
+ memset(fscb, 0, ios->length);
fscb->s_nextid = cpu_to_le64(sbi->s_nextid);
fscb->s_numfiles = cpu_to_le32(sbi->s_numfiles);
fscb->s_magic = cpu_to_le16(sb->s_magic);
fscb->s_newfs = 0;
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("exofs_write_super: osd_start_request failed.\n");
- goto out;
- }
-
- obj.partition = sbi->s_pid;
- obj.id = EXOFS_SUPER_ID;
- ret = osd_req_write_kern(or, &obj, 0, fscb, sizeof(*fscb));
- if (unlikely(ret)) {
- EXOFS_ERR("exofs_write_super: osd_req_write_kern failed.\n");
- goto out;
- }
+ ios->obj.id = EXOFS_SUPER_ID;
+ ios->offset = 0;
+ ios->kern_buff = fscb;
+ ios->cred = sbi->s_cred;
- ret = exofs_sync_op(or, sbi->s_timeout, sbi->s_cred);
+ ret = exofs_sbi_write(ios);
if (unlikely(ret)) {
- EXOFS_ERR("exofs_write_super: exofs_sync_op failed.\n");
+ EXOFS_ERR("%s: exofs_sbi_write failed.\n", __func__);
goto out;
}
sb->s_dirt = 0;
out:
- if (or)
- osd_end_request(or);
+ EXOFS_DBGMSG("s_nextid=0x%llx ret=%d\n", _LLU(sbi->s_nextid), ret);
+ exofs_put_io_state(ios);
unlock_super(sb);
- kfree(fscb);
return ret;
}
struct inode *root;
struct exofs_mountopt *opts = data;
struct exofs_sb_info *sbi; /*extended info */
+ struct osd_dev *od; /* Master device */
struct exofs_fscb fscb; /*on-disk superblock info */
- struct osd_request *or = NULL;
struct osd_obj_id obj;
int ret;
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
- sb->s_fs_info = sbi;
/* use mount options to fill superblock */
- sbi->s_dev = osduld_path_lookup(opts->dev_name);
- if (IS_ERR(sbi->s_dev)) {
- ret = PTR_ERR(sbi->s_dev);
- sbi->s_dev = NULL;
+ od = osduld_path_lookup(opts->dev_name);
+ if (IS_ERR(od)) {
+ ret = PTR_ERR(od);
goto free_sbi;
}
+ sbi->s_dev = od;
sbi->s_pid = opts->pid;
sbi->s_timeout = opts->timeout;
sb->s_bdev = NULL;
sb->s_dev = 0;
- /* read data from on-disk superblock object */
obj.partition = sbi->s_pid;
obj.id = EXOFS_SUPER_ID;
exofs_make_credential(sbi->s_cred, &obj);
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- if (!silent)
- EXOFS_ERR(
- "exofs_fill_super: osd_start_request failed.\n");
- ret = -ENOMEM;
- goto free_sbi;
- }
- ret = osd_req_read_kern(or, &obj, 0, &fscb, sizeof(fscb));
- if (unlikely(ret)) {
- if (!silent)
- EXOFS_ERR(
- "exofs_fill_super: osd_req_read_kern failed.\n");
- ret = -ENOMEM;
- goto free_sbi;
- }
-
- ret = exofs_sync_op(or, sbi->s_timeout, sbi->s_cred);
- if (unlikely(ret)) {
- if (!silent)
- EXOFS_ERR("exofs_fill_super: exofs_sync_op failed.\n");
- ret = -EIO;
+ ret = exofs_read_kern(od, sbi->s_cred, &obj, 0, &fscb, sizeof(fscb));
+ if (unlikely(ret))
goto free_sbi;
- }
sb->s_magic = le16_to_cpu(fscb.s_magic);
sbi->s_nextid = le64_to_cpu(fscb.s_nextid);
spin_lock_init(&sbi->s_next_gen_lock);
/* set up operation vectors */
+ sb->s_fs_info = sbi;
sb->s_op = &exofs_sops;
sb->s_export_op = &exofs_export_ops;
root = exofs_iget(sb, EXOFS_ROOT_ID - EXOFS_OBJ_OFF);
}
_exofs_print_device("Mounting", opts->dev_name, sbi->s_dev, sbi->s_pid);
- ret = 0;
-out:
- if (or)
- osd_end_request(or);
- return ret;
+ return 0;
free_sbi:
+ EXOFS_ERR("Unable to mount exofs on %s pid=0x%llx err=%d\n",
+ opts->dev_name, sbi->s_pid, ret);
osduld_put_device(sbi->s_dev); /* NULL safe */
kfree(sbi);
- goto out;
+ return ret;
}
/*
{
struct super_block *sb = dentry->d_sb;
struct exofs_sb_info *sbi = sb->s_fs_info;
- struct osd_obj_id obj = {sbi->s_pid, 0};
+ struct exofs_io_state *ios;
struct osd_attr attrs[] = {
ATTR_DEF(OSD_APAGE_PARTITION_QUOTAS,
OSD_ATTR_PQ_CAPACITY_QUOTA, sizeof(__be64)),
};
uint64_t capacity = ULLONG_MAX;
uint64_t used = ULLONG_MAX;
- struct osd_request *or;
uint8_t cred_a[OSD_CAP_LEN];
int ret;
- /* get used/capacity attributes */
- exofs_make_credential(cred_a, &obj);
-
- or = osd_start_request(sbi->s_dev, GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_DBGMSG("exofs_statfs: osd_start_request failed.\n");
- return -ENOMEM;
+ ret = exofs_get_io_state(sbi, &ios);
+ if (ret) {
+ EXOFS_DBGMSG("exofs_get_io_state failed.\n");
+ return ret;
}
- osd_req_get_attributes(or, &obj);
- osd_req_add_get_attr_list(or, attrs, ARRAY_SIZE(attrs));
- ret = exofs_sync_op(or, sbi->s_timeout, cred_a);
+ exofs_make_credential(cred_a, &ios->obj);
+ ios->cred = sbi->s_cred;
+ ios->in_attr = attrs;
+ ios->in_attr_len = ARRAY_SIZE(attrs);
+
+ ret = exofs_sbi_read(ios);
if (unlikely(ret))
goto out;
- ret = extract_attr_from_req(or, &attrs[0]);
+ ret = extract_attr_from_ios(ios, &attrs[0]);
if (likely(!ret)) {
capacity = get_unaligned_be64(attrs[0].val_ptr);
if (unlikely(!capacity))
} else
EXOFS_DBGMSG("exofs_statfs: get capacity failed.\n");
- ret = extract_attr_from_req(or, &attrs[1]);
+ ret = extract_attr_from_ios(ios, &attrs[1]);
if (likely(!ret))
used = get_unaligned_be64(attrs[1].val_ptr);
else
buf->f_namelen = EXOFS_NAME_LEN;
out:
- osd_end_request(or);
+ exofs_put_io_state(ios);
return ret;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff