exofs: Rename raid engine from exofs/ios.c => ore
ORE stands for "Objects Raid Engine"
This patch is a mechanical rename of everything that was in ios.c
and its API declaration to an ore.c and an osd_ore.h header. The ore
engine will later be used by the pnfs objects layout driver.
* File ios.c => ore.c
* Declaration of types and API are moved from exofs.h to a new
osd_ore.h
* All used types are prefixed by ore_ from their exofs_ name.
* Shift includes from exofs.h to osd_ore.h so osd_ore.h is
independent, include it from exofs.h.
Other than a pure rename there are no other changes. Next patch
will move the ore into it's own module and will export the API
to be used by exofs and later the layout driver
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
diff --git a/fs/exofs/Kbuild b/fs/exofs/Kbuild
index 2d0f757..c1af221 100644
--- a/fs/exofs/Kbuild
+++ b/fs/exofs/Kbuild
@@ -12,5 +12,5 @@
# Kbuild - Gets included from the Kernels Makefile and build system
#
-exofs-y := ios.o inode.o file.o symlink.o namei.o dir.o super.o
+exofs-y := ore.o inode.o file.o symlink.o namei.o dir.o super.o
obj-$(CONFIG_EXOFS_FS) += exofs.o
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h
index 39ad501..f4e442e 100644
--- a/fs/exofs/exofs.h
+++ b/fs/exofs/exofs.h
@@ -36,7 +36,8 @@
#include <linux/fs.h>
#include <linux/time.h>
#include <linux/backing-dev.h>
-#include <linux/pnfs_osd_xdr.h>
+#include <scsi/osd_ore.h>
+
#include "common.h"
#define EXOFS_ERR(fmt, a...) printk(KERN_ERR "exofs: " fmt, ##a)
@@ -52,33 +53,6 @@
/* u64 has problems with printk this will cast it to unsigned long long */
#define _LLU(x) (unsigned long long)(x)
-struct exofs_comp {
- struct osd_obj_id obj;
- u8 cred[OSD_CAP_LEN];
-};
-
-struct exofs_layout {
- /* Our way of looking at the data_map */
- unsigned stripe_unit;
- unsigned mirrors_p1;
-
- unsigned group_width;
- u64 group_depth;
- unsigned group_count;
-};
-
-struct exofs_components {
- unsigned numdevs; /* Num of devices in array */
- /* If @single_comp == EC_SINGLE_COMP, @comps points to a single
- * component. else there are @numdevs components
- */
- enum EC_COMP_USAGE {
- EC_SINGLE_COMP = 0, EC_MULTPLE_COMPS = 0xffffffff
- } single_comp;
- struct exofs_comp *comps;
- struct osd_dev **ods; /* osd_dev array */
-};
-
/*
* our extension to the in-memory superblock
*/
@@ -95,9 +69,9 @@
struct pnfs_osd_data_map data_map; /* Default raid to use
* FIXME: Needed ?
*/
- struct exofs_layout layout; /* Default files layout */
- struct exofs_comp one_comp; /* id & cred of partition id=0*/
- struct exofs_components comps; /* comps for the partition */
+ struct ore_layout layout; /* Default files layout */
+ struct ore_comp one_comp; /* id & cred of partition id=0*/
+ struct ore_components comps; /* comps for the partition */
struct osd_dev *_min_one_dev[1]; /* Place holder for one dev */
};
@@ -111,8 +85,8 @@
uint32_t i_data[EXOFS_IDATA];/*short symlink names and device #s*/
uint32_t i_dir_start_lookup; /* which page to start lookup */
uint64_t i_commit_size; /* the object's written length */
- struct exofs_comp one_comp; /* same component for all devices */
- struct exofs_components comps; /* inode view of the device table */
+ struct ore_comp one_comp; /* same component for all devices */
+ struct ore_components comps; /* inode view of the device table */
};
static inline osd_id exofs_oi_objno(struct exofs_i_info *oi)
@@ -120,53 +94,6 @@
return oi->vfs_inode.i_ino + EXOFS_OBJ_OFF;
}
-struct exofs_io_state;
-typedef void (*exofs_io_done_fn)(struct exofs_io_state *ios, void *private);
-
-struct exofs_io_state {
- struct kref kref;
-
- void *private;
- exofs_io_done_fn done;
-
- struct exofs_layout *layout;
- struct exofs_components *comps;
-
- /* Global read/write IO*/
- loff_t offset;
- unsigned long length;
- void *kern_buff;
-
- struct page **pages;
- unsigned nr_pages;
- unsigned pgbase;
- unsigned pages_consumed;
-
- /* Attributes */
- unsigned in_attr_len;
- struct osd_attr *in_attr;
- unsigned out_attr_len;
- struct osd_attr *out_attr;
-
- bool reading;
-
- /* Variable array of size numdevs */
- unsigned numdevs;
- struct exofs_per_dev_state {
- struct osd_request *or;
- struct bio *bio;
- loff_t offset;
- unsigned length;
- unsigned dev;
- } per_dev[];
-};
-
-static inline unsigned exofs_io_state_size(unsigned numdevs)
-{
- return sizeof(struct exofs_io_state) +
- sizeof(struct exofs_per_dev_state) * numdevs;
-}
-
/*
* our inode flags
*/
@@ -219,30 +146,8 @@
* function declarations *
*************************/
-/* ios.c */
-int exofs_get_rw_state(struct exofs_layout *layout,
- struct exofs_components *comps,
- bool is_reading, u64 offset, u64 length,
- struct exofs_io_state **ios);
-int exofs_get_io_state(struct exofs_layout *layout,
- struct exofs_components *comps,
- struct exofs_io_state **ios);
-void exofs_put_io_state(struct exofs_io_state *ios);
-
-int exofs_check_io(struct exofs_io_state *ios, u64 *resid);
-
-int exofs_sbi_create(struct exofs_io_state *ios);
-int exofs_sbi_remove(struct exofs_io_state *ios);
-int exofs_sbi_write(struct exofs_io_state *ios);
-int exofs_sbi_read(struct exofs_io_state *ios);
-int exofs_truncate(struct exofs_layout *layout, struct exofs_components *comps,
- u64 size);
-
-int extract_attr_from_ios(struct exofs_io_state *ios, struct osd_attr *attr);
-extern const struct osd_attr g_attr_logical_length;
-
/* inode.c */
-unsigned exofs_max_io_pages(struct exofs_layout *layout,
+unsigned exofs_max_io_pages(struct ore_layout *layout,
unsigned expected_pages);
int exofs_setattr(struct dentry *, struct iattr *);
int exofs_write_begin(struct file *file, struct address_space *mapping,
@@ -292,8 +197,8 @@
extern const struct inode_operations exofs_symlink_inode_operations;
extern const struct inode_operations exofs_fast_symlink_inode_operations;
-/* exofs_init_comps will initialize an exofs_components device array
- * pointing to a single exofs_comp struct, and a round-robin view
+/* exofs_init_comps will initialize an ore_components device array
+ * pointing to a single ore_comp struct, and a round-robin view
* of the device table.
* The first device of each inode is the [inode->ino % num_devices]
* and the rest of the devices sequentially following where the
@@ -302,8 +207,8 @@
* bigger and that the device table repeats twice.
* See: exofs_read_lookup_dev_table()
*/
-static inline void exofs_init_comps(struct exofs_components *comps,
- struct exofs_comp *one_comp,
+static inline void exofs_init_comps(struct ore_components *comps,
+ struct ore_comp *one_comp,
struct exofs_sb_info *sbi, osd_id oid)
{
unsigned dev_mod = (unsigned)oid, first_dev;
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index 3cc24f2..f39a38f 100644
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -43,7 +43,7 @@
PAGE_SIZE / sizeof(struct page *),
};
-unsigned exofs_max_io_pages(struct exofs_layout *layout,
+unsigned exofs_max_io_pages(struct ore_layout *layout,
unsigned expected_pages)
{
unsigned pages = min_t(unsigned, expected_pages, MAX_PAGES_KMALLOC);
@@ -58,7 +58,7 @@
struct exofs_sb_info *sbi;
struct inode *inode;
unsigned expected_pages;
- struct exofs_io_state *ios;
+ struct ore_io_state *ios;
struct page **pages;
unsigned alloc_pages;
@@ -133,7 +133,7 @@
pcol->pages = NULL;
if (pcol->ios) {
- exofs_put_io_state(pcol->ios);
+ ore_put_io_state(pcol->ios);
pcol->ios = NULL;
}
}
@@ -193,7 +193,7 @@
u64 resid;
u64 good_bytes;
u64 length = 0;
- int ret = exofs_check_io(pcol->ios, &resid);
+ int ret = ore_check_io(pcol->ios, &resid);
if (likely(!ret))
good_bytes = pcol->length;
@@ -234,7 +234,7 @@
}
/* callback of async reads */
-static void readpages_done(struct exofs_io_state *ios, void *p)
+static void readpages_done(struct ore_io_state *ios, void *p)
{
struct page_collect *pcol = p;
@@ -262,7 +262,7 @@
static int read_exec(struct page_collect *pcol)
{
struct exofs_i_info *oi = exofs_i(pcol->inode);
- struct exofs_io_state *ios;
+ struct ore_io_state *ios;
struct page_collect *pcol_copy = NULL;
int ret;
@@ -270,7 +270,7 @@
return 0;
if (!pcol->ios) {
- int ret = exofs_get_rw_state(&pcol->sbi->layout, &oi->comps, true,
+ int ret = ore_get_rw_state(&pcol->sbi->layout, &oi->comps, true,
pcol->pg_first << PAGE_CACHE_SHIFT,
pcol->length, &pcol->ios);
@@ -283,7 +283,7 @@
ios->nr_pages = pcol->nr_pages;
if (pcol->read_4_write) {
- exofs_sbi_read(pcol->ios);
+ ore_read(pcol->ios);
return __readpages_done(pcol);
}
@@ -296,7 +296,7 @@
*pcol_copy = *pcol;
ios->done = readpages_done;
ios->private = pcol_copy;
- ret = exofs_sbi_read(ios);
+ ret = ore_read(ios);
if (unlikely(ret))
goto err;
@@ -458,14 +458,14 @@
}
/* Callback for osd_write. All writes are asynchronous */
-static void writepages_done(struct exofs_io_state *ios, void *p)
+static void writepages_done(struct ore_io_state *ios, void *p)
{
struct page_collect *pcol = p;
int i;
u64 resid;
u64 good_bytes;
u64 length = 0;
- int ret = exofs_check_io(ios, &resid);
+ int ret = ore_check_io(ios, &resid);
atomic_dec(&pcol->sbi->s_curr_pending);
@@ -508,7 +508,7 @@
static int write_exec(struct page_collect *pcol)
{
struct exofs_i_info *oi = exofs_i(pcol->inode);
- struct exofs_io_state *ios;
+ struct ore_io_state *ios;
struct page_collect *pcol_copy = NULL;
int ret;
@@ -516,7 +516,7 @@
return 0;
BUG_ON(pcol->ios);
- ret = exofs_get_rw_state(&pcol->sbi->layout, &oi->comps, false,
+ ret = ore_get_rw_state(&pcol->sbi->layout, &oi->comps, false,
pcol->pg_first << PAGE_CACHE_SHIFT,
pcol->length, &pcol->ios);
@@ -538,9 +538,9 @@
ios->done = writepages_done;
ios->private = pcol_copy;
- ret = exofs_sbi_write(ios);
+ ret = ore_write(ios);
if (unlikely(ret)) {
- EXOFS_ERR("write_exec: exofs_sbi_write() Failed\n");
+ EXOFS_ERR("write_exec: ore_write() Failed\n");
goto err;
}
@@ -860,7 +860,7 @@
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
- ret = exofs_truncate(&sbi->layout, &oi->comps, (u64)newsize);
+ ret = ore_truncate(&sbi->layout, &oi->comps, (u64)newsize);
if (likely(!ret))
truncate_setsize(inode, newsize);
@@ -923,13 +923,13 @@
[1] = g_attr_inode_file_layout,
[2] = g_attr_inode_dir_layout,
};
- struct exofs_io_state *ios;
+ struct ore_io_state *ios;
struct exofs_on_disk_inode_layout *layout;
int ret;
- ret = exofs_get_io_state(&sbi->layout, &oi->comps, &ios);
+ ret = ore_get_io_state(&sbi->layout, &oi->comps, &ios);
if (unlikely(ret)) {
- EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
+ EXOFS_ERR("%s: ore_get_io_state failed.\n", __func__);
return ret;
}
@@ -939,7 +939,7 @@
ios->in_attr = attrs;
ios->in_attr_len = ARRAY_SIZE(attrs);
- ret = exofs_sbi_read(ios);
+ ret = ore_read(ios);
if (unlikely(ret)) {
EXOFS_ERR("object(0x%llx) corrupted, return empty file=>%d\n",
_LLU(oi->one_comp.obj.id), ret);
@@ -992,7 +992,7 @@
}
out:
- exofs_put_io_state(ios);
+ ore_put_io_state(ios);
return ret;
}
@@ -1111,15 +1111,15 @@
* set the obj_created flag so that other methods know that the object exists on
* the OSD.
*/
-static void create_done(struct exofs_io_state *ios, void *p)
+static void create_done(struct ore_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_io(ios, NULL);
- exofs_put_io_state(ios);
+ ret = ore_check_io(ios, NULL);
+ ore_put_io_state(ios);
atomic_dec(&sbi->s_curr_pending);
@@ -1149,7 +1149,7 @@
struct exofs_sb_info *sbi = sb->s_fs_info;
struct inode *inode;
struct exofs_i_info *oi;
- struct exofs_io_state *ios;
+ struct ore_io_state *ios;
int ret;
inode = new_inode(sb);
@@ -1178,18 +1178,18 @@
mark_inode_dirty(inode);
- ret = exofs_get_io_state(&sbi->layout, &oi->comps, &ios);
+ ret = ore_get_io_state(&sbi->layout, &oi->comps, &ios);
if (unlikely(ret)) {
- EXOFS_ERR("exofs_new_inode: exofs_get_io_state failed\n");
+ EXOFS_ERR("exofs_new_inode: ore_get_io_state failed\n");
return ERR_PTR(ret);
}
ios->done = create_done;
ios->private = inode;
- ret = exofs_sbi_create(ios);
+ ret = ore_create(ios);
if (ret) {
- exofs_put_io_state(ios);
+ ore_put_io_state(ios);
return ERR_PTR(ret);
}
atomic_inc(&sbi->s_curr_pending);
@@ -1208,11 +1208,11 @@
/*
* Callback function from exofs_update_inode().
*/
-static void updatei_done(struct exofs_io_state *ios, void *p)
+static void updatei_done(struct ore_io_state *ios, void *p)
{
struct updatei_args *args = p;
- exofs_put_io_state(ios);
+ ore_put_io_state(ios);
atomic_dec(&args->sbi->s_curr_pending);
@@ -1228,7 +1228,7 @@
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 exofs_io_state *ios;
+ struct ore_io_state *ios;
struct osd_attr attr;
struct exofs_fcb *fcb;
struct updatei_args *args;
@@ -1267,9 +1267,9 @@
} else
memcpy(fcb->i_data, oi->i_data, sizeof(fcb->i_data));
- ret = exofs_get_io_state(&sbi->layout, &oi->comps, &ios);
+ ret = ore_get_io_state(&sbi->layout, &oi->comps, &ios);
if (unlikely(ret)) {
- EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
+ EXOFS_ERR("%s: ore_get_io_state failed.\n", __func__);
goto free_args;
}
@@ -1286,13 +1286,13 @@
ios->private = args;
}
- ret = exofs_sbi_write(ios);
+ ret = ore_write(ios);
if (!do_sync && !ret) {
atomic_inc(&sbi->s_curr_pending);
goto out; /* deallocation in updatei_done */
}
- exofs_put_io_state(ios);
+ ore_put_io_state(ios);
free_args:
kfree(args);
out:
@@ -1311,11 +1311,11 @@
* Callback function from exofs_delete_inode() - don't have much cleaning up to
* do.
*/
-static void delete_done(struct exofs_io_state *ios, void *p)
+static void delete_done(struct ore_io_state *ios, void *p)
{
struct exofs_sb_info *sbi = p;
- exofs_put_io_state(ios);
+ ore_put_io_state(ios);
atomic_dec(&sbi->s_curr_pending);
}
@@ -1330,7 +1330,7 @@
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 exofs_io_state *ios;
+ struct ore_io_state *ios;
int ret;
truncate_inode_pages(&inode->i_data, 0);
@@ -1350,19 +1350,19 @@
/* ignore the error, attempt a remove anyway */
/* Now Remove the OSD objects */
- ret = exofs_get_io_state(&sbi->layout, &oi->comps, &ios);
+ ret = ore_get_io_state(&sbi->layout, &oi->comps, &ios);
if (unlikely(ret)) {
- EXOFS_ERR("%s: exofs_get_io_state failed\n", __func__);
+ EXOFS_ERR("%s: ore_get_io_state failed\n", __func__);
return;
}
ios->done = delete_done;
ios->private = sbi;
- ret = exofs_sbi_remove(ios);
+ ret = ore_remove(ios);
if (ret) {
- EXOFS_ERR("%s: exofs_sbi_remove failed\n", __func__);
- exofs_put_io_state(ios);
+ EXOFS_ERR("%s: ore_remove failed\n", __func__);
+ ore_put_io_state(ios);
return;
}
atomic_inc(&sbi->s_curr_pending);
diff --git a/fs/exofs/ios.c b/fs/exofs/ore.c
similarity index 79%
rename from fs/exofs/ios.c
rename to fs/exofs/ore.c
index f9d5c5a..3a00008 100644
--- a/fs/exofs/ios.c
+++ b/fs/exofs/ore.c
@@ -23,43 +23,54 @@
*/
#include <linux/slab.h>
-#include <scsi/scsi_device.h>
#include <asm/div64.h>
-#include "exofs.h"
+#include <scsi/osd_ore.h>
-#define EXOFS_DBGMSG2(M...) do {} while (0)
-/* #define EXOFS_DBGMSG2 EXOFS_DBGMSG */
+#define ORE_ERR(fmt, a...) printk(KERN_ERR "ore: " fmt, ##a)
-static u8 *_ios_cred(struct exofs_io_state *ios, unsigned index)
+#ifdef CONFIG_EXOFS_DEBUG
+#define ORE_DBGMSG(fmt, a...) \
+ printk(KERN_NOTICE "ore @%s:%d: " fmt, __func__, __LINE__, ##a)
+#else
+#define ORE_DBGMSG(fmt, a...) \
+ do { if (0) printk(fmt, ##a); } while (0)
+#endif
+
+/* u64 has problems with printk this will cast it to unsigned long long */
+#define _LLU(x) (unsigned long long)(x)
+
+#define ORE_DBGMSG2(M...) do {} while (0)
+/* #define ORE_DBGMSG2 ORE_DBGMSG */
+
+static u8 *_ios_cred(struct ore_io_state *ios, unsigned index)
{
return ios->comps->comps[index & ios->comps->single_comp].cred;
}
-static struct osd_obj_id *_ios_obj(struct exofs_io_state *ios, unsigned index)
+static struct osd_obj_id *_ios_obj(struct ore_io_state *ios, unsigned index)
{
return &ios->comps->comps[index & ios->comps->single_comp].obj;
}
-static struct osd_dev *_ios_od(struct exofs_io_state *ios, unsigned index)
+static struct osd_dev *_ios_od(struct ore_io_state *ios, unsigned index)
{
return ios->comps->ods[index];
}
-int exofs_get_rw_state(struct exofs_layout *layout,
- struct exofs_components *comps,
- bool is_reading, u64 offset, u64 length,
- struct exofs_io_state **pios)
+int ore_get_rw_state(struct ore_layout *layout, struct ore_components *comps,
+ bool is_reading, u64 offset, u64 length,
+ struct ore_io_state **pios)
{
- struct exofs_io_state *ios;
+ struct ore_io_state *ios;
/*TODO: Maybe use kmem_cach per sbi of size
* exofs_io_state_size(layout->s_numdevs)
*/
- ios = kzalloc(exofs_io_state_size(comps->numdevs), GFP_KERNEL);
+ ios = kzalloc(ore_io_state_size(comps->numdevs), GFP_KERNEL);
if (unlikely(!ios)) {
- EXOFS_DBGMSG("Failed kzalloc bytes=%d\n",
- exofs_io_state_size(comps->numdevs));
+ ORE_DBGMSG("Failed kzalloc bytes=%d\n",
+ ore_io_state_size(comps->numdevs));
*pios = NULL;
return -ENOMEM;
}
@@ -74,20 +85,19 @@
return 0;
}
-int exofs_get_io_state(struct exofs_layout *layout,
- struct exofs_components *comps,
- struct exofs_io_state **ios)
+int ore_get_io_state(struct ore_layout *layout, struct ore_components *comps,
+ struct ore_io_state **ios)
{
- return exofs_get_rw_state(layout, comps, true, 0, 0, ios);
+ return ore_get_rw_state(layout, comps, true, 0, 0, ios);
}
-void exofs_put_io_state(struct exofs_io_state *ios)
+void ore_put_io_state(struct ore_io_state *ios)
{
if (ios) {
unsigned i;
for (i = 0; i < ios->numdevs; i++) {
- struct exofs_per_dev_state *per_dev = &ios->per_dev[i];
+ struct ore_per_dev_state *per_dev = &ios->per_dev[i];
if (per_dev->or)
osd_end_request(per_dev->or);
@@ -99,7 +109,7 @@
}
}
-static void _sync_done(struct exofs_io_state *ios, void *p)
+static void _sync_done(struct ore_io_state *ios, void *p)
{
struct completion *waiting = p;
@@ -108,20 +118,20 @@
static void _last_io(struct kref *kref)
{
- struct exofs_io_state *ios = container_of(
- kref, struct exofs_io_state, kref);
+ struct ore_io_state *ios = container_of(
+ kref, struct ore_io_state, kref);
ios->done(ios, ios->private);
}
static void _done_io(struct osd_request *or, void *p)
{
- struct exofs_io_state *ios = p;
+ struct ore_io_state *ios = p;
kref_put(&ios->kref, _last_io);
}
-static int exofs_io_execute(struct exofs_io_state *ios)
+static int ore_io_execute(struct ore_io_state *ios)
{
DECLARE_COMPLETION_ONSTACK(wait);
bool sync = (ios->done == NULL);
@@ -139,7 +149,7 @@
ret = osd_finalize_request(or, 0, _ios_cred(ios, i), NULL);
if (unlikely(ret)) {
- EXOFS_DBGMSG("Failed to osd_finalize_request() => %d\n",
+ ORE_DBGMSG("Failed to osd_finalize_request() => %d\n",
ret);
return ret;
}
@@ -161,7 +171,7 @@
if (sync) {
wait_for_completion(&wait);
- ret = exofs_check_io(ios, NULL);
+ ret = ore_check_io(ios, NULL);
}
return ret;
}
@@ -181,7 +191,7 @@
}
}
-int exofs_check_io(struct exofs_io_state *ios, u64 *resid)
+int ore_check_io(struct ore_io_state *ios, u64 *resid)
{
enum osd_err_priority acumulated_osd_err = 0;
int acumulated_lin_err = 0;
@@ -202,7 +212,7 @@
if (OSD_ERR_PRI_CLEAR_PAGES == osi.osd_err_pri) {
/* start read offset passed endof file */
_clear_bio(ios->per_dev[i].bio);
- EXOFS_DBGMSG("start read offset passed end of file "
+ ORE_DBGMSG("start read offset passed end of file "
"offset=0x%llx, length=0x%llx\n",
_LLU(ios->per_dev[i].offset),
_LLU(ios->per_dev[i].length));
@@ -277,7 +287,7 @@
unsigned unit_off;
};
-static void _calc_stripe_info(struct exofs_layout *layout, u64 file_offset,
+static void _calc_stripe_info(struct ore_layout *layout, u64 file_offset,
struct _striping_info *si)
{
u32 stripe_unit = layout->stripe_unit;
@@ -312,8 +322,8 @@
si->M = M;
}
-static int _add_stripe_unit(struct exofs_io_state *ios, unsigned *cur_pg,
- unsigned pgbase, struct exofs_per_dev_state *per_dev,
+static int _add_stripe_unit(struct ore_io_state *ios, unsigned *cur_pg,
+ unsigned pgbase, struct ore_per_dev_state *per_dev,
int cur_len)
{
unsigned pg = *cur_pg;
@@ -330,7 +340,7 @@
per_dev->bio = bio_kmalloc(GFP_KERNEL, bio_size);
if (unlikely(!per_dev->bio)) {
- EXOFS_DBGMSG("Failed to allocate BIO size=%u\n",
+ ORE_DBGMSG("Failed to allocate BIO size=%u\n",
bio_size);
return -ENOMEM;
}
@@ -356,7 +366,7 @@
return 0;
}
-static int _prepare_one_group(struct exofs_io_state *ios, u64 length,
+static int _prepare_one_group(struct ore_io_state *ios, u64 length,
struct _striping_info *si)
{
unsigned stripe_unit = ios->layout->stripe_unit;
@@ -369,7 +379,7 @@
int ret = 0;
while (length) {
- struct exofs_per_dev_state *per_dev = &ios->per_dev[dev];
+ struct ore_per_dev_state *per_dev = &ios->per_dev[dev];
unsigned cur_len, page_off = 0;
if (!per_dev->length) {
@@ -412,7 +422,7 @@
return ret;
}
-static int _prepare_for_striping(struct exofs_io_state *ios)
+static int _prepare_for_striping(struct ore_io_state *ios)
{
u64 length = ios->length;
u64 offset = ios->offset;
@@ -421,7 +431,7 @@
if (!ios->pages) {
if (ios->kern_buff) {
- struct exofs_per_dev_state *per_dev = &ios->per_dev[0];
+ struct ore_per_dev_state *per_dev = &ios->per_dev[0];
_calc_stripe_info(ios->layout, ios->offset, &si);
per_dev->offset = si.obj_offset;
@@ -454,7 +464,7 @@
return ret;
}
-int exofs_sbi_create(struct exofs_io_state *ios)
+int ore_create(struct ore_io_state *ios)
{
int i, ret;
@@ -463,7 +473,7 @@
or = osd_start_request(_ios_od(ios, i), GFP_KERNEL);
if (unlikely(!or)) {
- EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ ORE_ERR("%s: osd_start_request failed\n", __func__);
ret = -ENOMEM;
goto out;
}
@@ -472,13 +482,13 @@
osd_req_create_object(or, _ios_obj(ios, i));
}
- ret = exofs_io_execute(ios);
+ ret = ore_io_execute(ios);
out:
return ret;
}
-int exofs_sbi_remove(struct exofs_io_state *ios)
+int ore_remove(struct ore_io_state *ios)
{
int i, ret;
@@ -487,7 +497,7 @@
or = osd_start_request(_ios_od(ios, i), GFP_KERNEL);
if (unlikely(!or)) {
- EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ ORE_ERR("%s: osd_start_request failed\n", __func__);
ret = -ENOMEM;
goto out;
}
@@ -496,15 +506,15 @@
osd_req_remove_object(or, _ios_obj(ios, i));
}
- ret = exofs_io_execute(ios);
+ ret = ore_io_execute(ios);
out:
return ret;
}
-static int _sbi_write_mirror(struct exofs_io_state *ios, int cur_comp)
+static int _write_mirror(struct ore_io_state *ios, int cur_comp)
{
- struct exofs_per_dev_state *master_dev = &ios->per_dev[cur_comp];
+ struct ore_per_dev_state *master_dev = &ios->per_dev[cur_comp];
unsigned dev = ios->per_dev[cur_comp].dev;
unsigned last_comp = cur_comp + ios->layout->mirrors_p1;
int ret = 0;
@@ -513,12 +523,12 @@
return 0; /* Just an empty slot */
for (; cur_comp < last_comp; ++cur_comp, ++dev) {
- struct exofs_per_dev_state *per_dev = &ios->per_dev[cur_comp];
+ struct ore_per_dev_state *per_dev = &ios->per_dev[cur_comp];
struct osd_request *or;
or = osd_start_request(_ios_od(ios, dev), GFP_KERNEL);
if (unlikely(!or)) {
- EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ ORE_ERR("%s: osd_start_request failed\n", __func__);
ret = -ENOMEM;
goto out;
}
@@ -532,7 +542,7 @@
bio = bio_kmalloc(GFP_KERNEL,
master_dev->bio->bi_max_vecs);
if (unlikely(!bio)) {
- EXOFS_DBGMSG(
+ ORE_DBGMSG(
"Failed to allocate BIO size=%u\n",
master_dev->bio->bi_max_vecs);
ret = -ENOMEM;
@@ -553,7 +563,7 @@
osd_req_write(or, _ios_obj(ios, dev), per_dev->offset,
bio, per_dev->length);
- EXOFS_DBGMSG("write(0x%llx) offset=0x%llx "
+ ORE_DBGMSG("write(0x%llx) offset=0x%llx "
"length=0x%llx dev=%d\n",
_LLU(_ios_obj(ios, dev)->id),
_LLU(per_dev->offset),
@@ -564,14 +574,14 @@
ios->kern_buff, ios->length);
if (unlikely(ret))
goto out;
- EXOFS_DBGMSG2("write_kern(0x%llx) offset=0x%llx "
+ ORE_DBGMSG2("write_kern(0x%llx) offset=0x%llx "
"length=0x%llx dev=%d\n",
_LLU(_ios_obj(ios, dev)->id),
_LLU(per_dev->offset),
_LLU(ios->length), dev);
} else {
osd_req_set_attributes(or, _ios_obj(ios, dev));
- EXOFS_DBGMSG2("obj(0x%llx) set_attributes=%d dev=%d\n",
+ ORE_DBGMSG2("obj(0x%llx) set_attributes=%d dev=%d\n",
_LLU(_ios_obj(ios, dev)->id),
ios->out_attr_len, dev);
}
@@ -589,7 +599,7 @@
return ret;
}
-int exofs_sbi_write(struct exofs_io_state *ios)
+int ore_write(struct ore_io_state *ios)
{
int i;
int ret;
@@ -599,19 +609,19 @@
return ret;
for (i = 0; i < ios->numdevs; i += ios->layout->mirrors_p1) {
- ret = _sbi_write_mirror(ios, i);
+ ret = _write_mirror(ios, i);
if (unlikely(ret))
return ret;
}
- ret = exofs_io_execute(ios);
+ ret = ore_io_execute(ios);
return ret;
}
-static int _sbi_read_mirror(struct exofs_io_state *ios, unsigned cur_comp)
+static int _read_mirror(struct ore_io_state *ios, unsigned cur_comp)
{
struct osd_request *or;
- struct exofs_per_dev_state *per_dev = &ios->per_dev[cur_comp];
+ struct ore_per_dev_state *per_dev = &ios->per_dev[cur_comp];
struct osd_obj_id *obj = _ios_obj(ios, cur_comp);
unsigned first_dev = (unsigned)obj->id;
@@ -621,7 +631,7 @@
first_dev = per_dev->dev + first_dev % ios->layout->mirrors_p1;
or = osd_start_request(_ios_od(ios, first_dev), GFP_KERNEL);
if (unlikely(!or)) {
- EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ ORE_ERR("%s: osd_start_request failed\n", __func__);
return -ENOMEM;
}
per_dev->or = or;
@@ -629,14 +639,14 @@
if (ios->pages) {
osd_req_read(or, obj, per_dev->offset,
per_dev->bio, per_dev->length);
- EXOFS_DBGMSG("read(0x%llx) offset=0x%llx length=0x%llx"
+ ORE_DBGMSG("read(0x%llx) offset=0x%llx length=0x%llx"
" dev=%d\n", _LLU(obj->id),
_LLU(per_dev->offset), _LLU(per_dev->length),
first_dev);
} else if (ios->kern_buff) {
int ret = osd_req_read_kern(or, obj, per_dev->offset,
ios->kern_buff, ios->length);
- EXOFS_DBGMSG2("read_kern(0x%llx) offset=0x%llx "
+ ORE_DBGMSG2("read_kern(0x%llx) offset=0x%llx "
"length=0x%llx dev=%d ret=>%d\n",
_LLU(obj->id), _LLU(per_dev->offset),
_LLU(ios->length), first_dev, ret);
@@ -644,7 +654,7 @@
return ret;
} else {
osd_req_get_attributes(or, obj);
- EXOFS_DBGMSG2("obj(0x%llx) get_attributes=%d dev=%d\n",
+ ORE_DBGMSG2("obj(0x%llx) get_attributes=%d dev=%d\n",
_LLU(obj->id),
ios->in_attr_len, first_dev);
}
@@ -657,7 +667,7 @@
return 0;
}
-int exofs_sbi_read(struct exofs_io_state *ios)
+int ore_read(struct ore_io_state *ios)
{
int i;
int ret;
@@ -667,16 +677,16 @@
return ret;
for (i = 0; i < ios->numdevs; i += ios->layout->mirrors_p1) {
- ret = _sbi_read_mirror(ios, i);
+ ret = _read_mirror(ios, i);
if (unlikely(ret))
return ret;
}
- ret = exofs_io_execute(ios);
+ ret = ore_io_execute(ios);
return ret;
}
-int extract_attr_from_ios(struct exofs_io_state *ios, struct osd_attr *attr)
+int extract_attr_from_ios(struct ore_io_state *ios, struct osd_attr *attr)
{
struct osd_attr cur_attr = {.attr_page = 0}; /* start with zeros */
void *iter = NULL;
@@ -697,18 +707,18 @@
return -EIO;
}
-static int _truncate_mirrors(struct exofs_io_state *ios, unsigned cur_comp,
+static int _truncate_mirrors(struct ore_io_state *ios, unsigned cur_comp,
struct osd_attr *attr)
{
int last_comp = cur_comp + ios->layout->mirrors_p1;
for (; cur_comp < last_comp; ++cur_comp) {
- struct exofs_per_dev_state *per_dev = &ios->per_dev[cur_comp];
+ struct ore_per_dev_state *per_dev = &ios->per_dev[cur_comp];
struct osd_request *or;
or = osd_start_request(_ios_od(ios, cur_comp), GFP_KERNEL);
if (unlikely(!or)) {
- EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ ORE_ERR("%s: osd_start_request failed\n", __func__);
return -ENOMEM;
}
per_dev->or = or;
@@ -730,7 +740,7 @@
unsigned max_devs;
};
-void _calc_trunk_info(struct exofs_layout *layout, u64 file_offset,
+void _calc_trunk_info(struct ore_layout *layout, u64 file_offset,
struct _trunc_info *ti)
{
unsigned stripe_unit = layout->stripe_unit;
@@ -745,10 +755,10 @@
ti->max_devs = layout->group_width * layout->group_count;
}
-int exofs_truncate(struct exofs_layout *layout, struct exofs_components *comps,
+int ore_truncate(struct ore_layout *layout, struct ore_components *comps,
u64 size)
{
- struct exofs_io_state *ios;
+ struct ore_io_state *ios;
struct exofs_trunc_attr {
struct osd_attr attr;
__be64 newsize;
@@ -756,7 +766,7 @@
struct _trunc_info ti;
int i, ret;
- ret = exofs_get_io_state(layout, comps, &ios);
+ ret = ore_get_io_state(layout, comps, &ios);
if (unlikely(ret))
return ret;
@@ -791,18 +801,18 @@
size_attr->attr = g_attr_logical_length;
size_attr->attr.val_ptr = &size_attr->newsize;
- EXOFS_DBGMSG("trunc(0x%llx) obj_offset=0x%llx dev=%d\n",
+ ORE_DBGMSG("trunc(0x%llx) obj_offset=0x%llx dev=%d\n",
_LLU(comps->comps->obj.id), _LLU(obj_size), i);
ret = _truncate_mirrors(ios, i * ios->layout->mirrors_p1,
&size_attr->attr);
if (unlikely(ret))
goto out;
}
- ret = exofs_io_execute(ios);
+ ret = ore_io_execute(ios);
out:
kfree(size_attrs);
- exofs_put_io_state(ios);
+ ore_put_io_state(ios);
return ret;
}
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
index 4d68779..2748940 100644
--- a/fs/exofs/super.c
+++ b/fs/exofs/super.c
@@ -263,19 +263,19 @@
struct osd_attr attrs[] = {
[0] = g_attr_sb_stats,
};
- struct exofs_io_state *ios;
+ struct ore_io_state *ios;
int ret;
- ret = exofs_get_io_state(&sbi->layout, &sbi->comps, &ios);
+ ret = ore_get_io_state(&sbi->layout, &sbi->comps, &ios);
if (unlikely(ret)) {
- EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
+ EXOFS_ERR("%s: ore_get_io_state failed.\n", __func__);
return ret;
}
ios->in_attr = attrs;
ios->in_attr_len = ARRAY_SIZE(attrs);
- ret = exofs_sbi_read(ios);
+ ret = ore_read(ios);
if (unlikely(ret)) {
EXOFS_ERR("Error reading super_block stats => %d\n", ret);
goto out;
@@ -302,13 +302,13 @@
}
out:
- exofs_put_io_state(ios);
+ ore_put_io_state(ios);
return ret;
}
-static void stats_done(struct exofs_io_state *ios, void *p)
+static void stats_done(struct ore_io_state *ios, void *p)
{
- exofs_put_io_state(ios);
+ ore_put_io_state(ios);
/* Good thanks nothing to do anymore */
}
@@ -318,12 +318,12 @@
struct osd_attr attrs[] = {
[0] = g_attr_sb_stats,
};
- struct exofs_io_state *ios;
+ struct ore_io_state *ios;
int ret;
- ret = exofs_get_io_state(&sbi->layout, &sbi->comps, &ios);
+ ret = ore_get_io_state(&sbi->layout, &sbi->comps, &ios);
if (unlikely(ret)) {
- EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
+ EXOFS_ERR("%s: ore_get_io_state failed.\n", __func__);
return ret;
}
@@ -337,10 +337,10 @@
ios->out_attr = attrs;
ios->out_attr_len = ARRAY_SIZE(attrs);
- ret = exofs_sbi_write(ios);
+ ret = ore_write(ios);
if (unlikely(ret)) {
- EXOFS_ERR("%s: exofs_sbi_write failed.\n", __func__);
- exofs_put_io_state(ios);
+ EXOFS_ERR("%s: ore_write failed.\n", __func__);
+ ore_put_io_state(ios);
}
return ret;
@@ -359,9 +359,9 @@
{
struct exofs_sb_info *sbi;
struct exofs_fscb *fscb;
- struct exofs_comp one_comp;
- struct exofs_components comps;
- struct exofs_io_state *ios;
+ struct ore_comp one_comp;
+ struct ore_components comps;
+ struct ore_io_state *ios;
int ret = -ENOMEM;
fscb = kmalloc(sizeof(*fscb), GFP_KERNEL);
@@ -380,7 +380,7 @@
exofs_init_comps(&comps, &one_comp, sbi, EXOFS_SUPER_ID);
- ret = exofs_get_io_state(&sbi->layout, &comps, &ios);
+ ret = ore_get_io_state(&sbi->layout, &comps, &ios);
if (unlikely(ret))
goto out;
@@ -397,9 +397,9 @@
ios->offset = 0;
ios->kern_buff = fscb;
- ret = exofs_sbi_write(ios);
+ ret = ore_write(ios);
if (unlikely(ret))
- EXOFS_ERR("%s: exofs_sbi_write failed.\n", __func__);
+ EXOFS_ERR("%s: ore_write failed.\n", __func__);
else
sb->s_dirt = 0;
@@ -407,7 +407,7 @@
unlock_super(sb);
out:
EXOFS_DBGMSG("s_nextid=0x%llx ret=%d\n", _LLU(sbi->s_nextid), ret);
- exofs_put_io_state(ios);
+ ore_put_io_state(ios);
kfree(fscb);
return ret;
}
@@ -562,7 +562,7 @@
return 0;
}
-static unsigned __ra_pages(struct exofs_layout *layout)
+static unsigned __ra_pages(struct ore_layout *layout)
{
const unsigned _MIN_RA = 32; /* min 128K read-ahead */
unsigned ra_pages = layout->group_width * layout->stripe_unit /
@@ -609,7 +609,7 @@
struct osd_dev *fscb_od,
unsigned table_count)
{
- struct exofs_comp comp;
+ struct ore_comp comp;
struct exofs_device_table *dt;
unsigned table_bytes = table_count * sizeof(dt->dt_dev_table[0]) +
sizeof(*dt);
@@ -747,7 +747,7 @@
struct exofs_sb_info *sbi; /*extended info */
struct osd_dev *od; /* Master device */
struct exofs_fscb fscb; /*on-disk superblock info */
- struct exofs_comp comp;
+ struct ore_comp comp;
unsigned table_count;
int ret;
@@ -913,7 +913,7 @@
{
struct super_block *sb = dentry->d_sb;
struct exofs_sb_info *sbi = sb->s_fs_info;
- struct exofs_io_state *ios;
+ struct ore_io_state *ios;
struct osd_attr attrs[] = {
ATTR_DEF(OSD_APAGE_PARTITION_QUOTAS,
OSD_ATTR_PQ_CAPACITY_QUOTA, sizeof(__be64)),
@@ -924,16 +924,16 @@
uint64_t used = ULLONG_MAX;
int ret;
- ret = exofs_get_io_state(&sbi->layout, &sbi->comps, &ios);
+ ret = ore_get_io_state(&sbi->layout, &sbi->comps, &ios);
if (ret) {
- EXOFS_DBGMSG("exofs_get_io_state failed.\n");
+ EXOFS_DBGMSG("ore_get_io_state failed.\n");
return ret;
}
ios->in_attr = attrs;
ios->in_attr_len = ARRAY_SIZE(attrs);
- ret = exofs_sbi_read(ios);
+ ret = ore_read(ios);
if (unlikely(ret))
goto out;
@@ -962,7 +962,7 @@
buf->f_namelen = EXOFS_NAME_LEN;
out:
- exofs_put_io_state(ios);
+ ore_put_io_state(ios);
return ret;
}
diff --git a/include/scsi/osd_ore.h b/include/scsi/osd_ore.h
new file mode 100644
index 0000000..c5c5e00
--- /dev/null
+++ b/include/scsi/osd_ore.h
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2011
+ * Boaz Harrosh <bharrosh@panasas.com>
+ *
+ * Public Declarations of the ORE API
+ *
+ * This file is part of the ORE (Object Raid Engine) library.
+ *
+ * ORE is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. (GPL v2)
+ *
+ * ORE is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the ORE; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __ORE_H__
+#define __ORE_H__
+
+#include <scsi/osd_initiator.h>
+#include <scsi/osd_attributes.h>
+#include <scsi/osd_sec.h>
+#include <linux/pnfs_osd_xdr.h>
+
+struct ore_comp {
+ struct osd_obj_id obj;
+ u8 cred[OSD_CAP_LEN];
+};
+
+struct ore_layout {
+ /* Our way of looking at the data_map */
+ unsigned stripe_unit;
+ unsigned mirrors_p1;
+
+ unsigned group_width;
+ u64 group_depth;
+ unsigned group_count;
+};
+
+struct ore_components {
+ unsigned numdevs; /* Num of devices in array */
+ /* If @single_comp == EC_SINGLE_COMP, @comps points to a single
+ * component. else there are @numdevs components
+ */
+ enum EC_COMP_USAGE {
+ EC_SINGLE_COMP = 0, EC_MULTPLE_COMPS = 0xffffffff
+ } single_comp;
+ struct ore_comp *comps;
+ struct osd_dev **ods; /* osd_dev array */
+};
+
+struct ore_io_state;
+typedef void (*ore_io_done_fn)(struct ore_io_state *ios, void *private);
+
+struct ore_io_state {
+ struct kref kref;
+
+ void *private;
+ ore_io_done_fn done;
+
+ struct ore_layout *layout;
+ struct ore_components *comps;
+
+ /* Global read/write IO*/
+ loff_t offset;
+ unsigned long length;
+ void *kern_buff;
+
+ struct page **pages;
+ unsigned nr_pages;
+ unsigned pgbase;
+ unsigned pages_consumed;
+
+ /* Attributes */
+ unsigned in_attr_len;
+ struct osd_attr *in_attr;
+ unsigned out_attr_len;
+ struct osd_attr *out_attr;
+
+ bool reading;
+
+ /* Variable array of size numdevs */
+ unsigned numdevs;
+ struct ore_per_dev_state {
+ struct osd_request *or;
+ struct bio *bio;
+ loff_t offset;
+ unsigned length;
+ unsigned dev;
+ } per_dev[];
+};
+
+static inline unsigned ore_io_state_size(unsigned numdevs)
+{
+ return sizeof(struct ore_io_state) +
+ sizeof(struct ore_per_dev_state) * numdevs;
+}
+
+/* ore.c */
+int ore_get_rw_state(struct ore_layout *layout, struct ore_components *comps,
+ bool is_reading, u64 offset, u64 length,
+ struct ore_io_state **ios);
+int ore_get_io_state(struct ore_layout *layout, struct ore_components *comps,
+ struct ore_io_state **ios);
+void ore_put_io_state(struct ore_io_state *ios);
+
+int ore_check_io(struct ore_io_state *ios, u64 *resid);
+
+int ore_create(struct ore_io_state *ios);
+int ore_remove(struct ore_io_state *ios);
+int ore_write(struct ore_io_state *ios);
+int ore_read(struct ore_io_state *ios);
+int ore_truncate(struct ore_layout *layout, struct ore_components *comps,
+ u64 size);
+
+int extract_attr_from_ios(struct ore_io_state *ios, struct osd_attr *attr);
+
+extern const struct osd_attr g_attr_logical_length;
+
+#endif