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Commit 08d21b5f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd 

Pull exofs and ore fixes from Boaz Harrosh:
 "The main fix here, the first patch, is also destined for -stable.  The
  rest is small trivia and cosmetics.  The ORE patches effect both exofs
  and pnfs-objects very reproducible bugs"

[ ORE is "object raid engine", used by exofs and pnfs  - Linus ]

* 'for-linus' of git://git.open-osd.org/linux-open-osd:
  exofs: Print less in r4w
  exofs: Allow corrupted directory entry to be empty file
  exofs: Allow O_DIRECT open
  ore: Don't crash on NULL bio in _clear_bio
  ore: Fix wrong math in allocation of per device BIO
parents 627f4b3e 19350e76

fs/exofs/inode.c

+19 −12
Original line number Diff line number Diff line
@@ -577,7 +577,7 @@ static struct page *__r4w_get_page(void *priv, u64 offset, bool *uptodate) 


		if (offset >= i_size) {

			*uptodate = true;

			EXOFS_DBGMSG("offset >= i_size index=0x%lx\n", index);

			EXOFS_DBGMSG2("offset >= i_size index=0x%lx\n", index);

			return ZERO_PAGE(0);

		}
@@ -596,10 +596,10 @@ static struct page *__r4w_get_page(void *priv, u64 offset, bool *uptodate) 
			*uptodate = true;

		else

			*uptodate = PageUptodate(page);

		EXOFS_DBGMSG("index=0x%lx uptodate=%d\n", index, *uptodate);

		EXOFS_DBGMSG2("index=0x%lx uptodate=%d\n", index, *uptodate);

		return page;

	} else {

		EXOFS_DBGMSG("YES that_locked_page index=0x%lx\n",

		EXOFS_DBGMSG2("YES that_locked_page index=0x%lx\n",

			     pcol->that_locked_page->index);

		*uptodate = true;

		return pcol->that_locked_page;
@@ -611,11 +611,11 @@ static void __r4w_put_page(void *priv, struct page *page) 
	struct page_collect *pcol = priv;



	if ((pcol->that_locked_page != page) && (ZERO_PAGE(0) != page)) {

		EXOFS_DBGMSG("index=0x%lx\n", page->index);

		EXOFS_DBGMSG2("index=0x%lx\n", page->index);

		page_cache_release(page);

		return;

	}

	EXOFS_DBGMSG("that_locked_page index=0x%lx\n",

	EXOFS_DBGMSG2("that_locked_page index=0x%lx\n",

		     ZERO_PAGE(0) == page ? -1 : page->index);

}
@@ -961,6 +961,14 @@ static void exofs_invalidatepage(struct page *page, unsigned int offset, 
	WARN_ON(1);

}





 /* TODO: Should be easy enough to do proprly */

static ssize_t exofs_direct_IO(int rw, struct kiocb *iocb,

		const struct iovec *iov, loff_t offset, unsigned long nr_segs)

{

	return 0;

}



const struct address_space_operations exofs_aops = {

	.readpage	= exofs_readpage,

	.readpages	= exofs_readpages,
@@ -974,7 +982,7 @@ const struct address_space_operations exofs_aops = { 


	/* Not implemented Yet */

	.bmap		= NULL, /* TODO: use osd's OSD_ACT_READ_MAP */

	.direct_IO	= NULL, /* TODO: Should be trivial to do */

	.direct_IO	= exofs_direct_IO,



	/* With these NULL has special meaning or default is not exported */

	.get_xip_mem	= NULL,
@@ -1010,7 +1018,7 @@ static int _do_truncate(struct inode *inode, loff_t newsize) 
	if (likely(!ret))

		truncate_setsize(inode, newsize);



	EXOFS_DBGMSG("(0x%lx) size=0x%llx ret=>%d\n",

	EXOFS_DBGMSG2("(0x%lx) size=0x%llx ret=>%d\n",

		     inode->i_ino, newsize, ret);

	return ret;

}
@@ -1094,14 +1102,13 @@ static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi, 
		/* If object is lost on target we might as well enable it's

		 * delete.

		 */

		if ((ret == -ENOENT) || (ret == -EINVAL))

		ret = 0;

		goto out;

	}



	ret = extract_attr_from_ios(ios, &attrs[0]);

	if (ret) {

		EXOFS_ERR("%s: extract_attr of inode_data failed\n", __func__);

		EXOFS_ERR("%s: extract_attr 0 of inode failed\n", __func__);

		goto out;

	}

	WARN_ON(attrs[0].len != EXOFS_INO_ATTR_SIZE);
@@ -1109,7 +1116,7 @@ static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi, 


	ret = extract_attr_from_ios(ios, &attrs[1]);

	if (ret) {

		EXOFS_ERR("%s: extract_attr of inode_data failed\n", __func__);

		EXOFS_ERR("%s: extract_attr 1 of inode failed\n", __func__);

		goto out;

	}

	if (attrs[1].len) {
@@ -1124,7 +1131,7 @@ static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi, 


	ret = extract_attr_from_ios(ios, &attrs[2]);

	if (ret) {

		EXOFS_ERR("%s: extract_attr of inode_data failed\n", __func__);

		EXOFS_ERR("%s: extract_attr 2 of inode failed\n", __func__);

		goto out;

	}

	if (attrs[2].len) {

fs/exofs/ore.c

+31 −14
Original line number Diff line number Diff line
@@ -103,7 +103,7 @@ int ore_verify_layout(unsigned total_comps, struct ore_layout *layout) 


	layout->max_io_length =

		(BIO_MAX_PAGES_KMALLOC * PAGE_SIZE - layout->stripe_unit) *

							layout->group_width;

					(layout->group_width - layout->parity);

	if (layout->parity) {

		unsigned stripe_length =

				(layout->group_width - layout->parity) *
@@ -286,7 +286,8 @@ int ore_get_rw_state(struct ore_layout *layout, struct ore_components *oc, 
	if (length) {

		ore_calc_stripe_info(layout, offset, length, &ios->si);

		ios->length = ios->si.length;

		ios->nr_pages = (ios->length + PAGE_SIZE - 1) / PAGE_SIZE;

		ios->nr_pages = ((ios->offset & (PAGE_SIZE - 1)) +

				 ios->length + PAGE_SIZE - 1) / PAGE_SIZE;

		if (layout->parity)

			_ore_post_alloc_raid_stuff(ios);

	}
@@ -430,8 +431,12 @@ int ore_check_io(struct ore_io_state *ios, ore_on_dev_error on_dev_error) 
		if (likely(!ret))

			continue;



		if (OSD_ERR_PRI_CLEAR_PAGES == osi.osd_err_pri) {

			/* start read offset passed endof file */

		if ((OSD_ERR_PRI_CLEAR_PAGES == osi.osd_err_pri) &&

		    per_dev->bio) {

			/* start read offset passed endof file.

			 * Note: if we do not have bio it means read-attributes

			 * In this case we should return error to caller.

			 */

			_clear_bio(per_dev->bio);

			ORE_DBGMSG("start read offset passed end of file "

				"offset=0x%llx, length=0x%llx\n",
@@ -536,6 +541,7 @@ void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset, 
	u64	H = LmodS - G * T;



	u32	N = div_u64(H, U);

	u32	Nlast;



	/* "H - (N * U)" is just "H % U" so it's bound to u32 */

	u32	C = (u32)(H - (N * U)) / stripe_unit + G * group_width;
@@ -568,6 +574,10 @@ void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset, 
	si->length = T - H;

	if (si->length > length)

		si->length = length;



	Nlast = div_u64(H + si->length + U - 1, U);

	si->maxdevUnits = Nlast - N;



	si->M = M;

}

EXPORT_SYMBOL(ore_calc_stripe_info);
@@ -583,13 +593,16 @@ int _ore_add_stripe_unit(struct ore_io_state *ios, unsigned *cur_pg, 
	int ret;



	if (per_dev->bio == NULL) {

		unsigned pages_in_stripe = ios->layout->group_width *

					(ios->layout->stripe_unit / PAGE_SIZE);

		unsigned nr_pages = ios->nr_pages * ios->layout->group_width /

					(ios->layout->group_width -

					 ios->layout->parity);

		unsigned bio_size = (nr_pages + pages_in_stripe) /

		unsigned bio_size;



		if (!ios->reading) {

			bio_size = ios->si.maxdevUnits;

		} else {

			bio_size = (ios->si.maxdevUnits + 1) *

			     (ios->layout->group_width - ios->layout->parity) /

			     ios->layout->group_width;

		}

		bio_size *= (ios->layout->stripe_unit / PAGE_SIZE);



		per_dev->bio = bio_kmalloc(GFP_KERNEL, bio_size);

		if (unlikely(!per_dev->bio)) {
@@ -609,8 +622,12 @@ int _ore_add_stripe_unit(struct ore_io_state *ios, unsigned *cur_pg, 
		added_len = bio_add_pc_page(q, per_dev->bio, pages[pg],

					    pglen, pgbase);

		if (unlikely(pglen != added_len)) {

			ORE_DBGMSG("Failed bio_add_pc_page bi_vcnt=%u\n",

				   per_dev->bio->bi_vcnt);

			/* If bi_vcnt == bi_max then this is a SW BUG */

			ORE_DBGMSG("Failed bio_add_pc_page bi_vcnt=0x%x "

				   "bi_max=0x%x BIO_MAX=0x%x cur_len=0x%x\n",

				   per_dev->bio->bi_vcnt,

				   per_dev->bio->bi_max_vecs,

				   BIO_MAX_PAGES_KMALLOC, cur_len);

			ret = -ENOMEM;

			goto out;

		}
@@ -1098,7 +1115,7 @@ int ore_truncate(struct ore_layout *layout, struct ore_components *oc, 
		size_attr->attr = g_attr_logical_length;

		size_attr->attr.val_ptr = &size_attr->newsize;



		ORE_DBGMSG("trunc(0x%llx) obj_offset=0x%llx dev=%d\n",

		ORE_DBGMSG2("trunc(0x%llx) obj_offset=0x%llx dev=%d\n",

			     _LLU(oc->comps->obj.id), _LLU(obj_size), i);

		ret = _truncate_mirrors(ios, i * ios->layout->mirrors_p1,

					&size_attr->attr);

include/scsi/osd_ore.h

+1 −0
Original line number Diff line number Diff line
@@ -102,6 +102,7 @@ struct ore_striping_info { 
	unsigned unit_off;

	unsigned cur_pg;

	unsigned cur_comp;

	unsigned maxdevUnits;

};



struct ore_io_state;