*
*/
-#include <asm/uaccess.h>
-#include <linux/sched.h>
-#include <linux/stat.h>
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
#include <linux/string.h>
+#include <linux/stat.h>
+#include <linux/errno.h>
#include <linux/locks.h>
-#include <linux/quotaops.h>
-#include <linux/list.h>
-#include <linux/file.h>
-#include <linux/iobuf.h>
-#include <asm/bitops.h>
-#include <asm/byteorder.h>
+#include <linux/unistd.h>
+
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+#include <linux/fs.h>
+#include <linux/stat.h>
+#include <asm/uaccess.h>
+#include <linux/vmalloc.h>
+#include <asm/segment.h>
+#include <linux/mm.h>
+#include <linux/pagemap.h>
+#include <linux/smp_lock.h>
+
#include <linux/obd_support.h>
#include <linux/obd_class.h>
extern struct obd_device obd_dev[MAX_OBD_DEVICES];
+kmem_cache_t *obdo_cachep = NULL;
+
+int obd_init_obdo_cache(void)
+{
+ ENTRY;
+ if (obdo_cachep == NULL) {
+ CDEBUG(D_CACHE, "allocating obdo_cache\n");
+ obdo_cachep = kmem_cache_create("obdo_cache",
+ sizeof(struct obdo),
+ 0, SLAB_HWCACHE_ALIGN,
+ NULL, NULL);
+ if (obdo_cachep == NULL) {
+ EXIT;
+ return -ENOMEM;
+ } else {
+ CDEBUG(D_CACHE, "allocated cache at %p\n", obdo_cachep);
+ }
+ } else {
+ CDEBUG(D_CACHE, "using existing cache at %p\n", obdo_cachep);
+ }
+ EXIT;
+ return 0;
+}
+
+void obd_cleanup_obdo_cache(void)
+{
+ ENTRY;
+ if (obdo_cachep != NULL) {
+ CDEBUG(D_CACHE, "destroying obdo_cache at %p\n", obdo_cachep);
+ if (kmem_cache_destroy(obdo_cachep))
+ printk(KERN_WARNING __FUNCTION__
+ ": unable to free cache\n");
+ } else
+ printk(KERN_INFO __FUNCTION__
+ ": called with NULL cache pointer\n");
+
+ obdo_cachep = NULL;
+ EXIT;
+}
+
/* map connection to client */
-struct obd_client *gen_client(int cli_id)
+struct obd_client *gen_client(struct obd_conn *conn)
{
- struct obd_device * obddev;
+ struct obd_device * obddev = conn->oc_dev;
struct list_head * lh, * next;
struct obd_client * cli;
- int a;
-
- for (a = 0; a < MAX_OBD_DEVICES; a++) {
- obddev = &obd_dev[a];
- lh = next = &obddev->obd_gen_clients;
- while ((lh = lh->next) != &obddev->obd_gen_clients) {
- cli = list_entry(lh, struct obd_client, cli_chain);
-
- if (cli->cli_id == cli_id)
- return cli;
- }
+ lh = next = &obddev->obd_gen_clients;
+ while ((lh = lh->next) != &obddev->obd_gen_clients) {
+ cli = list_entry(lh, struct obd_client, cli_chain);
+
+ if (cli->cli_id == conn->oc_id)
+ return cli;
}
return NULL;
} /* obd_client */
-
/* a connection defines a context in which preallocation can be managed. */
-int gen_connect (struct obd_device *obddev,
- struct obd_conn_info * conninfo)
+int gen_connect (struct obd_conn *conn)
{
struct obd_client * cli;
OBD_ALLOC(cli, struct obd_client *, sizeof(struct obd_client));
if ( !cli ) {
- printk("obd_connect (minor %d): no memory!\n",
- obddev->obd_minor);
+ printk(__FUNCTION__ ": no memory! (minor %d)\n",
+ conn->oc_dev->obd_minor);
return -ENOMEM;
}
INIT_LIST_HEAD(&cli->cli_prealloc_inodes);
- /* this should probably spinlocked? */
- cli->cli_id = ++obddev->obd_gen_last_id;
+ /* XXX this should probably spinlocked? */
+ cli->cli_id = ++conn->oc_dev->obd_gen_last_id;
cli->cli_prealloc_quota = 0;
- cli->cli_obd = obddev;
- list_add(&(cli->cli_chain), obddev->obd_gen_clients.prev);
+ cli->cli_obd = conn->oc_dev;
+ list_add(&(cli->cli_chain), conn->oc_dev->obd_gen_clients.prev);
- CDEBUG(D_IOCTL, "connect: new ID %u\n", cli->cli_id);
- conninfo->conn_id = cli->cli_id;
+ CDEBUG(D_INFO, "connect: new ID %u\n", cli->cli_id);
+ conn->oc_id = cli->cli_id;
return 0;
} /* gen_obd_connect */
-int gen_disconnect(unsigned int conn_id)
+int gen_disconnect(struct obd_conn *conn)
{
struct obd_client * cli;
-
ENTRY;
- if (!(cli = gen_client(conn_id))) {
+ if (!(cli = gen_client(conn))) {
CDEBUG(D_IOCTL, "disconnect: attempting to free "
- "nonexistent client %u\n", conn_id);
+ "nonexistent client %u\n", conn->oc_id);
return -EINVAL;
}
+
list_del(&(cli->cli_chain));
OBD_FREE(cli, sizeof(struct obd_client));
- CDEBUG(D_IOCTL, "disconnect: ID %u\n", conn_id);
+ CDEBUG(D_INFO, "disconnect: ID %u\n", conn->oc_id);
EXIT;
return 0;
* used to make calls to these devices.
* data holds nothing
*/
-int gen_multi_setup(struct obd_device *obddev, int len, void *data)
+int gen_multi_setup(struct obd_device *obddev, uint32_t len, void *data)
{
int i;
- struct obd_device *rdev = obddev->obd_multi_dev[0];
for (i = 0 ; i < obddev->obd_multi_count ; i++ ) {
int rc;
- struct obd_device *child = rdev + i;
- rc = OBP(child, connect)(child, &rdev->obd_multi_conns[i]);
+ struct obd_conn *ch_conn = &obddev->obd_multi_conn[i];
+ rc = OBP(ch_conn->oc_dev, connect)(ch_conn);
if ( rc != 0 ) {
- /* XXX disconnect others */
+ int j;
+
+ for (j = --i; j >= 0; --j) {
+ ch_conn = &obddev->obd_multi_conn[i];
+ OBP(ch_conn->oc_dev, disconnect)(ch_conn);
+ }
return -EINVAL;
}
}
return 0;
}
-int gen_multi_cleanup(struct obd_device * obddev)
-{
- int i;
- struct obd_device **rdev = obddev->obd_multi_dev;
-
- for (i = 0 ; i < obddev->obd_multi_count ; i++ ) {
- int rc;
- struct obd_device *child = *(rdev + i);
- rc = OBP(child, cleanup)(child);
- *(rdev + i) = NULL;
-
- if ( rc != 0 ) {
- /* XXX disconnect others */
- return -EINVAL;
- }
- }
- gen_cleanup(obddev);
- return 0;
-} /* sim_cleanup_obddev */
-
+#if 0
int gen_multi_attach(struct obd_device *obddev, int len, void *data)
{
int i;
for (i=0 ; i<count ; i++) {
rdev = &obd_dev[*((int *)data + i)];
rdev = rdev + 1;
- CDEBUG(D_IOCTL, "OBD RAID1: replicator %d is of type %s\n", i,
+ CDEBUG(D_INFO, "OBD RAID1: replicator %d is of type %s\n", i,
(rdev + i)->obd_type->typ_name);
}
return 0;
}
-
+#endif
/*
* close all connections to lower devices
* needed for forced unloads of OBD client drivers
*/
-int gen_multi_cleanup_device(struct obd_device *obddev)
+int gen_multi_cleanup(struct obd_device *obddev)
{
int i;
- struct obd_device **rdev;
- rdev = obddev->obd_multi_dev;
for (i = 0 ; i < obddev->obd_multi_count ; i++ ) {
+ struct obd_conn *ch_conn = &obddev->obd_multi_conn[i];
int rc;
- struct obd_device *child = *(rdev + i);
- rc = OBP(child, disconnect)
- (obddev->obd_multi_conns[i].conn_id);
+ rc = OBP(ch_conn->oc_dev, disconnect)(ch_conn);
if ( rc != 0 ) {
- printk("OBD multi cleanup dev: disconnect failure %d\n", child->obd_minor);
+ printk(KERN_WARNING __FUNCTION__
+ ": disconnect failure %d\n",
+ ch_conn->oc_dev->obd_minor);
}
- *(rdev + i) = NULL;
}
return 0;
} /* gen_multi_cleanup_device */
lh = tmp = &obddev->obd_gen_clients;
while ((tmp = tmp->next) != lh) {
cli = list_entry(tmp, struct obd_client, cli_chain);
- CDEBUG(D_IOCTL, "Disconnecting obd_connection %d, at %p\n",
+ CDEBUG(D_INFO, "Disconnecting obd_connection %d, at %p\n",
cli->cli_id, cli);
- OBP(obddev, disconnect)(cli->cli_id);
}
-
- return OBP(obddev, cleanup_device)(obddev);
+ return 0;
} /* sim_cleanup_device */
-/*
- * Wait for a page to get unlocked.
- *
- * This must be called with the caller "holding" the page,
- * ie with increased "page->count" so that the page won't
- * go away during the wait..
- */
-static void my__wait_on_page(struct page *page)
+void ___wait_on_page(struct page *page)
{
- struct task_struct *tsk = current;
- DECLARE_WAITQUEUE(wait, tsk);
-
- add_wait_queue(&page->wait, &wait);
- do {
- run_task_queue(&tq_disk);
- set_task_state(tsk, TASK_UNINTERRUPTIBLE);
- if (!PageLocked(page))
- break;
- schedule();
- } while (PageLocked(page));
- tsk->state = TASK_RUNNING;
- remove_wait_queue(&page->wait, &wait);
+ struct task_struct *tsk = current;
+ DECLARE_WAITQUEUE(wait, tsk);
+
+ add_wait_queue(&page->wait, &wait);
+ do {
+ run_task_queue(&tq_disk);
+ set_task_state(tsk, TASK_UNINTERRUPTIBLE);
+ if (!PageLocked(page))
+ break;
+ schedule();
+ } while (PageLocked(page));
+ tsk->state = TASK_RUNNING;
+ remove_wait_queue(&page->wait, &wait);
}
-/*
- * Get an exclusive lock on the page..
- */
-static void lck_page(struct page *page)
+void lck_page(struct page *page)
{
- while (TryLockPage(page))
- my__wait_on_page(page);
+ while (TryLockPage(page))
+ ___wait_on_page(page);
}
-/* obdo's must be correctly filled in by caller! */
-int gen_copy_data(struct obd_device *obddev, int conn_id,
- obdattr *source, obdattr *target)
+int gen_copy_data(struct obd_conn *dst_conn, struct obdo *dst,
+ struct obd_conn *src_conn, struct obdo *src,
+ obd_size count, obd_off offset)
{
struct page *page;
-<<<<<<< genops.c
- int res;
- int err;
- int i;
-=======
unsigned long index = 0;
- int rc;
->>>>>>> 1.5
+ int err = 0;
-<<<<<<< genops.c
- page = __get_pages(GFP_USER, 0);
- if (!page)
- return EIO;
- lck_page(page);
-=======
+ ENTRY;
+ CDEBUG(D_INFO, "src: ino %Ld blocks %Ld, size %Ld, dst: ino %Ld\n",
+ src->o_id, src->o_blocks, src->o_size, dst->o_id);
page = alloc_page(GFP_USER);
- if ( !page )
+ if ( !page ) {
+ EXIT;
return -ENOMEM;
->>>>>>> 1.5
-
- err = 0;
- i = 0;
- while (1) {
- CDEBUG(D_IOCTL, "i %d, size %ld\n", i, source->i_size);
- err = 0;
- if ( i >= (source->i_size >> PAGE_SHIFT) )
- break;
+ }
-<<<<<<< genops.c
- page->offset = i << PAGE_SHIFT;
- err = -EIO;
- CDEBUG(D_IOCTL, "i %d, offset %ld, size %ld\n", i,
- page->offset, source->i_size);
- res = OBP(obddev, brw)(READ, conn_id, source, page, 0);
- CDEBUG(D_IOCTL, "Result reading %d\n", res);
- if ( res < 0 )
- break;
-=======
lck_page(page);
- while (index < ((src->i_size + PAGE_SIZE - 1) >> PAGE_SHIFT)) {
+ /* XXX with brw vector I/O, we could batch up reads and writes here,
+ * all we need to do is allocate multiple pages to handle the I/Os
+ * and arrays to handle the request parameters.
+ */
+ while (index < ((src->o_size + PAGE_SIZE - 1) >> PAGE_SHIFT)) {
+ obd_count num_oa = 1;
+ obd_count num_buf = 1;
+ char *buf;
+ obd_size brw_count = PAGE_SIZE;
+ obd_off brw_offset = (page->index) << PAGE_SHIFT;
+ obd_flag flagr = 0;
+ obd_flag flagw = OBD_BRW_CREATE;
page->index = index;
- rc = OBP(conn->oc_dev, brw)(READ, conn, src, page, 0);
->>>>>>> 1.5
+ buf = (char *)page_address(page);
+ err = OBP(src_conn->oc_dev, brw)(READ, src_conn, num_oa, &src,
+ &num_buf, &buf, &brw_count,
+ &brw_offset, &flagr);
- res = OBP(obddev, brw)(WRITE, conn_id, target, page, 1);
- CDEBUG(D_IOCTL, "Result writing %d\n", res);
- if ( res < 0 )
+ if ( err ) {
+ EXIT;
break;
+ }
+ CDEBUG(D_INFO, "Read page %ld ...\n", page->index);
+
+ err = OBP(dst_conn->oc_dev, brw)(WRITE, dst_conn, num_oa, &dst,
+ &num_buf, &buf, &brw_count,
+ &brw_offset, &flagw);
-<<<<<<< genops.c
- i++;
-=======
- rc = OBP(conn->oc_dev,brw)(WRITE, conn, tgt, page, 1);
- if ( rc != PAGE_SIZE)
+ /* XXX should handle dst->o_size, dst->o_blocks here */
+ if ( err ) {
+ EXIT;
break;
+ }
+
+ CDEBUG(D_INFO, "Wrote page %ld ...\n", page->index);
- index ++;
->>>>>>> 1.5
+ index++;
}
+ dst->o_size = src->o_size;
+ dst->o_blocks = src->o_blocks;
+ dst->o_valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
UnlockPage(page);
__free_page(page);
- target->i_size = source->i_size;
- OBP(obddev, setattr)(conn_id, target);
-
+ EXIT;
return err;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff