*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
*/
-/* LUSTRE_VERSION_CODE */
-#include <lustre_ver.h>
/* prerequisite for linux/xattr.h */
#include <linux/types.h>
/* prerequisite for linux/xattr.h */
#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/pagevec.h>
/*
* struct OBD_{ALLOC,FREE}*()
/* ext_depth() */
#include <ldiskfs/ldiskfs_extents.h>
+static inline bool osd_use_page_cache(struct osd_device *d)
+{
+ /* do not use pagecache if write and read caching are disabled */
+ if (d->od_writethrough_cache + d->od_read_cache == 0)
+ return false;
+ /* use pagecache by default */
+ return true;
+}
+
static int __osd_init_iobuf(struct osd_device *d, struct osd_iobuf *iobuf,
int rw, int line, int pages)
{
iobuf->dr_error = 0;
iobuf->dr_dev = d;
iobuf->dr_frags = 0;
- iobuf->dr_elapsed = 0;
+ iobuf->dr_elapsed = ktime_set(0, 0);
/* must be counted before, so assert */
iobuf->dr_rw = rw;
iobuf->dr_init_at = line;
- blocks = pages * (PAGE_CACHE_SIZE >> osd_sb(d)->s_blocksize_bits);
+ blocks = pages * (PAGE_SIZE >> osd_sb(d)->s_blocksize_bits);
if (iobuf->dr_bl_buf.lb_len >= blocks * sizeof(iobuf->dr_blocks[0])) {
LASSERT(iobuf->dr_pg_buf.lb_len >=
pages * sizeof(iobuf->dr_pages[0]));
CDEBUG(D_OTHER, "realloc %u for %u (%u) pages\n",
(unsigned)(pages * sizeof(iobuf->dr_pages[0])), i, pages);
pages = i;
- blocks = pages * (PAGE_CACHE_SIZE >> osd_sb(d)->s_blocksize_bits);
+ blocks = pages * (PAGE_SIZE >> osd_sb(d)->s_blocksize_bits);
iobuf->dr_max_pages = 0;
CDEBUG(D_OTHER, "realloc %u for %u blocks\n",
(unsigned)(blocks * sizeof(iobuf->dr_blocks[0])), blocks);
if (unlikely(iobuf->dr_pages == NULL))
return -ENOMEM;
+ lu_buf_realloc(&iobuf->dr_lnb_buf,
+ pages * sizeof(iobuf->dr_lnbs[0]));
+ iobuf->dr_lnbs = iobuf->dr_lnb_buf.lb_buf;
+ if (unlikely(iobuf->dr_lnbs == NULL))
+ return -ENOMEM;
+
iobuf->dr_max_pages = pages;
return 0;
#define osd_init_iobuf(dev, iobuf, rw, pages) \
__osd_init_iobuf(dev, iobuf, rw, __LINE__, pages)
-static void osd_iobuf_add_page(struct osd_iobuf *iobuf, struct page *page)
+static void osd_iobuf_add_page(struct osd_iobuf *iobuf,
+ struct niobuf_local *lnb)
{
- LASSERT(iobuf->dr_npages < iobuf->dr_max_pages);
- iobuf->dr_pages[iobuf->dr_npages++] = page;
+ LASSERT(iobuf->dr_npages < iobuf->dr_max_pages);
+ iobuf->dr_pages[iobuf->dr_npages] = lnb->lnb_page;
+ iobuf->dr_lnbs[iobuf->dr_npages] = lnb;
+ iobuf->dr_npages++;
}
void osd_fini_iobuf(struct osd_device *d, struct osd_iobuf *iobuf)
lprocfs_oh_tally(&d->od_brw_stats.
hist[BRW_R_DIO_FRAGS+rw],
iobuf->dr_frags);
- lprocfs_oh_tally_log2(&d->od_brw_stats.hist[BRW_R_IO_TIME+rw],
- iobuf->dr_elapsed);
+ lprocfs_oh_tally_log2(&d->od_brw_stats.hist[BRW_R_IO_TIME+rw],
+ ktime_to_ms(iobuf->dr_elapsed));
}
}
-#ifndef REQ_WRITE /* pre-2.6.35 */
-#define __REQ_WRITE BIO_RW
-#endif
-
+#ifdef HAVE_BIO_ENDIO_USES_ONE_ARG
+static void dio_complete_routine(struct bio *bio)
+{
+ int error = bio->bi_status;
+#else
static void dio_complete_routine(struct bio *bio, int error)
{
+#endif
struct osd_iobuf *iobuf = bio->bi_private;
-#ifdef HAVE_BVEC_ITER
- struct bvec_iter iter;
- struct bio_vec bvl;
-#else
- int iter;
struct bio_vec *bvl;
-#endif
/* CAVEAT EMPTOR: possibly in IRQ context
* DO NOT record procfs stats here!!! */
CERROR("***** bio->bi_private is NULL! This should never "
"happen. Normally, I would crash here, but instead I "
"will dump the bio contents to the console. Please "
- "report this to <https://jira.hpdd.intel.com/> , along "
+ "report this to <https://jira.whamcloud.com/> , along "
"with any interesting messages leading up to this point "
"(like SCSI errors, perhaps). Because bi_private is "
"NULL, I can't wake up the thread that initiated this "
"IO - you will probably have to reboot this node.\n");
- CERROR("bi_next: %p, bi_flags: %lx, bi_rw: %lu, bi_vcnt: %d, "
- "bi_idx: %d, bi->size: %d, bi_end_io: %p, bi_cnt: %d, "
- "bi_private: %p\n", bio->bi_next, bio->bi_flags,
- bio->bi_rw, bio->bi_vcnt, bio_idx(bio),
- bio_sectors(bio) << 9, bio->bi_end_io,
- atomic_read(&bio->bi_cnt), bio->bi_private);
+ CERROR("bi_next: %p, bi_flags: %lx, " __stringify(bi_opf)
+ ": %x, bi_vcnt: %d, bi_idx: %d, bi->size: %d, bi_end_io: %p, bi_cnt: %d, bi_private: %p\n",
+ bio->bi_next, (unsigned long)bio->bi_flags,
+ (unsigned int)bio->bi_opf, bio->bi_vcnt, bio_idx(bio),
+ bio_sectors(bio) << 9, bio->bi_end_io,
+ atomic_read(&bio->__bi_cnt),
+ bio->bi_private);
return;
}
/* the check is outside of the cycle for performance reason -bzzz */
- if (!test_bit(__REQ_WRITE, &bio->bi_rw)) {
- bio_for_each_segment(bvl, bio, iter) {
+ if (!bio_data_dir(bio)) {
+ DECLARE_BVEC_ITER_ALL(iter_all);
+
+ bio_for_each_segment_all(bvl, bio, iter_all) {
if (likely(error == 0))
- SetPageUptodate(bvec_iter_page(&bvl, iter));
- LASSERT(PageLocked(bvec_iter_page(&bvl, iter)));
+ SetPageUptodate(bvl_to_page(bvl));
+ LASSERT(PageLocked(bvl_to_page(bvl)));
}
atomic_dec(&iobuf->dr_dev->od_r_in_flight);
} else {
* call to OSD.
*/
if (atomic_read(&iobuf->dr_numreqs) == 1) {
- iobuf->dr_elapsed = jiffies - iobuf->dr_start_time;
+ ktime_t now = ktime_get();
+
+ iobuf->dr_elapsed = ktime_sub(now, iobuf->dr_start_time);
iobuf->dr_elapsed_valid = 1;
}
if (atomic_dec_and_test(&iobuf->dr_numreqs))
static void osd_submit_bio(int rw, struct bio *bio)
{
- LASSERTF(rw == 0 || rw == 1, "%x\n", rw);
- if (rw == 0)
- submit_bio(READ, bio);
- else
- submit_bio(WRITE, bio);
+ LASSERTF(rw == 0 || rw == 1, "%x\n", rw);
+#ifdef HAVE_SUBMIT_BIO_2ARGS
+ submit_bio(rw ? WRITE : READ, bio);
+#else
+ bio->bi_opf |= rw;
+ submit_bio(bio);
+#endif
}
static int can_be_merged(struct bio *bio, sector_t sector)
return bio_end_sector(bio) == sector ? 1 : 0;
}
+#if IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)
+/*
+ * This function will change the data written, thus it should only be
+ * used when checking data integrity feature
+ */
+static void bio_integrity_fault_inject(struct bio *bio)
+{
+ struct bio_vec *bvec;
+ DECLARE_BVEC_ITER_ALL(iter_all);
+ void *kaddr;
+ char *addr;
+
+ bio_for_each_segment_all(bvec, bio, iter_all) {
+ struct page *page = bvec->bv_page;
+
+ kaddr = kmap(page);
+ addr = kaddr;
+ *addr = ~(*addr);
+ kunmap(page);
+ break;
+ }
+}
+
+static int bio_dif_compare(__u16 *expected_guard_buf, void *bio_prot_buf,
+ unsigned int sectors, int tuple_size)
+{
+ __u16 *expected_guard;
+ __u16 *bio_guard;
+ int i;
+
+ expected_guard = expected_guard_buf;
+ for (i = 0; i < sectors; i++) {
+ bio_guard = (__u16 *)bio_prot_buf;
+ if (*bio_guard != *expected_guard) {
+ CERROR("unexpected guard tags on sector %d "
+ "expected guard %u, bio guard "
+ "%u, sectors %u, tuple size %d\n",
+ i, *expected_guard, *bio_guard, sectors,
+ tuple_size);
+ return -EIO;
+ }
+ expected_guard++;
+ bio_prot_buf += tuple_size;
+ }
+ return 0;
+}
+
+static int osd_bio_integrity_compare(struct bio *bio, struct block_device *bdev,
+ struct osd_iobuf *iobuf, int index)
+{
+ struct blk_integrity *bi = bdev_get_integrity(bdev);
+ struct bio_integrity_payload *bip = bio->bi_integrity;
+ struct niobuf_local *lnb;
+ unsigned short sector_size = blk_integrity_interval(bi);
+ void *bio_prot_buf = page_address(bip->bip_vec->bv_page) +
+ bip->bip_vec->bv_offset;
+ struct bio_vec *bv;
+ sector_t sector = bio_start_sector(bio);
+ unsigned int sectors, total;
+ DECLARE_BVEC_ITER_ALL(iter_all);
+ __u16 *expected_guard;
+ int rc;
+
+ total = 0;
+ bio_for_each_segment_all(bv, bio, iter_all) {
+ lnb = iobuf->dr_lnbs[index];
+ expected_guard = lnb->lnb_guards;
+ sectors = bv->bv_len / sector_size;
+ if (lnb->lnb_guard_rpc) {
+ rc = bio_dif_compare(expected_guard, bio_prot_buf,
+ sectors, bi->tuple_size);
+ if (rc)
+ return rc;
+ }
+
+ sector += sectors;
+ bio_prot_buf += sectors * bi->tuple_size;
+ total += sectors * bi->tuple_size;
+ LASSERT(total <= bip_size(bio->bi_integrity));
+ index++;
+ }
+ return 0;
+}
+
+static int osd_bio_integrity_handle(struct osd_device *osd, struct bio *bio,
+ struct osd_iobuf *iobuf,
+ int start_page_idx, bool fault_inject,
+ bool integrity_enabled)
+{
+ struct super_block *sb = osd_sb(osd);
+ integrity_gen_fn *generate_fn = NULL;
+ integrity_vrfy_fn *verify_fn = NULL;
+ int rc;
+
+ ENTRY;
+
+ if (!integrity_enabled)
+ RETURN(0);
+
+ rc = osd_get_integrity_profile(osd, &generate_fn, &verify_fn);
+ if (rc)
+ RETURN(rc);
+
+ rc = bio_integrity_prep_fn(bio, generate_fn, verify_fn);
+ if (rc)
+ RETURN(rc);
+
+ /* Verify and inject fault only when writing */
+ if (iobuf->dr_rw == 1) {
+ if (unlikely(OBD_FAIL_CHECK(OBD_FAIL_OST_INTEGRITY_CMP))) {
+ rc = osd_bio_integrity_compare(bio, sb->s_bdev, iobuf,
+ start_page_idx);
+ if (rc)
+ RETURN(rc);
+ }
+
+ if (unlikely(fault_inject))
+ bio_integrity_fault_inject(bio);
+ }
+
+ RETURN(0);
+}
+
+#ifdef HAVE_BIO_INTEGRITY_PREP_FN
+# ifdef HAVE_BIO_ENDIO_USES_ONE_ARG
+static void dio_integrity_complete_routine(struct bio *bio)
+# else
+static void dio_integrity_complete_routine(struct bio *bio, int error)
+# endif
+{
+ struct osd_bio_private *bio_private = bio->bi_private;
+
+ bio->bi_private = bio_private->obp_iobuf;
+ osd_dio_complete_routine(bio, error);
+
+ OBD_FREE_PTR(bio_private);
+}
+#endif /* HAVE_BIO_INTEGRITY_PREP_FN */
+#else /* !CONFIG_BLK_DEV_INTEGRITY */
+#define osd_bio_integrity_handle(osd, bio, iobuf, start_page_idx, \
+ fault_inject, integrity_enabled) 0
+#endif /* CONFIG_BLK_DEV_INTEGRITY */
+
+static int osd_bio_init(struct bio *bio, struct osd_iobuf *iobuf,
+ bool integrity_enabled, int start_page_idx,
+ struct osd_bio_private **pprivate)
+{
+ ENTRY;
+
+ *pprivate = NULL;
+
+#ifdef HAVE_BIO_INTEGRITY_PREP_FN
+ if (integrity_enabled) {
+ struct osd_bio_private *bio_private = NULL;
+
+ OBD_ALLOC_GFP(bio_private, sizeof(*bio_private), GFP_NOIO);
+ if (bio_private == NULL)
+ RETURN(-ENOMEM);
+ bio->bi_end_io = dio_integrity_complete_routine;
+ bio->bi_private = bio_private;
+ bio_private->obp_start_page_idx = start_page_idx;
+ bio_private->obp_iobuf = iobuf;
+ *pprivate = bio_private;
+ } else
+#endif
+ {
+ bio->bi_end_io = dio_complete_routine;
+ bio->bi_private = iobuf;
+ }
+
+ RETURN(0);
+}
+
static int osd_do_bio(struct osd_device *osd, struct inode *inode,
struct osd_iobuf *iobuf)
{
- int blocks_per_page = PAGE_CACHE_SIZE >> inode->i_blkbits;
- struct page **pages = iobuf->dr_pages;
- int npages = iobuf->dr_npages;
- unsigned long *blocks = iobuf->dr_blocks;
- int total_blocks = npages * blocks_per_page;
- int sector_bits = inode->i_sb->s_blocksize_bits - 9;
- unsigned int blocksize = inode->i_sb->s_blocksize;
- struct bio *bio = NULL;
- struct page *page;
- unsigned int page_offset;
- sector_t sector;
- int nblocks;
- int block_idx;
- int page_idx;
- int i;
- int rc = 0;
- ENTRY;
+ int blocks_per_page = PAGE_SIZE >> inode->i_blkbits;
+ struct page **pages = iobuf->dr_pages;
+ int npages = iobuf->dr_npages;
+ sector_t *blocks = iobuf->dr_blocks;
+ int total_blocks = npages * blocks_per_page;
+ struct super_block *sb = inode->i_sb;
+ int sector_bits = sb->s_blocksize_bits - 9;
+ unsigned int blocksize = sb->s_blocksize;
+ struct block_device *bdev = sb->s_bdev;
+ struct osd_bio_private *bio_private = NULL;
+ struct bio *bio = NULL;
+ int bio_start_page_idx;
+ struct page *page;
+ unsigned int page_offset;
+ sector_t sector;
+ int nblocks;
+ int block_idx;
+ int page_idx;
+ int i;
+ int rc = 0;
+ bool fault_inject;
+ bool integrity_enabled;
+ struct blk_plug plug;
+ ENTRY;
+ fault_inject = OBD_FAIL_CHECK(OBD_FAIL_OST_INTEGRITY_FAULT);
LASSERT(iobuf->dr_npages == npages);
- osd_brw_stats_update(osd, iobuf);
- iobuf->dr_start_time = cfs_time_current();
+ integrity_enabled = bdev_integrity_enabled(bdev, iobuf->dr_rw);
+
+ osd_brw_stats_update(osd, iobuf);
+ iobuf->dr_start_time = ktime_get();
+ blk_start_plug(&plug);
for (page_idx = 0, block_idx = 0;
page_idx < npages;
page_idx++, block_idx += blocks_per_page) {
continue; /* added this frag OK */
if (bio != NULL) {
- struct request_queue *q =
- bdev_get_queue(bio->bi_bdev);
+ struct request_queue *q = bio_get_queue(bio);
unsigned int bi_size = bio_sectors(bio) << 9;
/* Dang! I have to fragment this I/O */
- CDEBUG(D_INODE, "bio++ sz %d vcnt %d(%d) "
- "sectors %d(%d) psg %d(%d) hsg %d(%d)\n",
+ CDEBUG(D_INODE,
+ "bio++ sz %d vcnt %d(%d) sectors %d(%d) psg %d(%d)\n",
bi_size, bio->bi_vcnt, bio->bi_max_vecs,
bio_sectors(bio),
queue_max_sectors(q),
- bio_phys_segments(q, bio),
- queue_max_phys_segments(q),
- 0, queue_max_hw_segments(q));
+ osd_bio_nr_segs(bio),
+ queue_max_segments(q));
+ rc = osd_bio_integrity_handle(osd, bio,
+ iobuf, bio_start_page_idx,
+ fault_inject, integrity_enabled);
+ if (rc) {
+ bio_put(bio);
+ goto out;
+ }
+
record_start_io(iobuf, bi_size);
osd_submit_bio(iobuf->dr_rw, bio);
}
+ bio_start_page_idx = page_idx;
/* allocate new bio */
bio = bio_alloc(GFP_NOIO, min(BIO_MAX_PAGES,
(npages - page_idx) *
goto out;
}
- bio->bi_bdev = inode->i_sb->s_bdev;
+ bio_set_dev(bio, bdev);
bio_set_sector(bio, sector);
- bio->bi_rw = (iobuf->dr_rw == 0) ? READ : WRITE;
- bio->bi_end_io = dio_complete_routine;
- bio->bi_private = iobuf;
+ bio->bi_opf = iobuf->dr_rw ? WRITE : READ;
+ rc = osd_bio_init(bio, iobuf, integrity_enabled,
+ bio_start_page_idx, &bio_private);
+ if (rc) {
+ bio_put(bio);
+ goto out;
+ }
rc = bio_add_page(bio, page,
blocksize * nblocks, page_offset);
}
if (bio != NULL) {
+ rc = osd_bio_integrity_handle(osd, bio, iobuf,
+ bio_start_page_idx,
+ fault_inject,
+ integrity_enabled);
+ if (rc) {
+ bio_put(bio);
+ goto out;
+ }
+
record_start_io(iobuf, bio_sectors(bio) << 9);
osd_submit_bio(iobuf->dr_rw, bio);
rc = 0;
}
out:
+ blk_finish_plug(&plug);
+
/* in order to achieve better IO throughput, we don't wait for writes
* completion here. instead we proceed with transaction commit in
* parallel and wait for IO completion once transaction is stopped
* see osd_trans_stop() for more details -bzzz */
- if (iobuf->dr_rw == 0) {
+ if (iobuf->dr_rw == 0 || fault_inject) {
wait_event(iobuf->dr_wait,
atomic_read(&iobuf->dr_numreqs) == 0);
osd_fini_iobuf(osd, iobuf);
}
- if (rc == 0)
+ if (rc == 0) {
rc = iobuf->dr_error;
+ } else {
+ if (bio_private)
+ OBD_FREE_PTR(bio_private);
+ }
+
RETURN(rc);
}
static int osd_map_remote_to_local(loff_t offset, ssize_t len, int *nrpages,
- struct niobuf_local *lnb)
+ struct niobuf_local *lnb, int maxlnb)
{
+ int rc = 0;
ENTRY;
*nrpages = 0;
while (len > 0) {
- int poff = offset & (PAGE_CACHE_SIZE - 1);
- int plen = PAGE_CACHE_SIZE - poff;
+ int poff = offset & (PAGE_SIZE - 1);
+ int plen = PAGE_SIZE - poff;
+
+ if (*nrpages >= maxlnb) {
+ rc = -EOVERFLOW;
+ break;
+ }
if (plen > len)
plen = len;
lnb->lnb_flags = 0;
lnb->lnb_page = NULL;
lnb->lnb_rc = 0;
+ lnb->lnb_guard_rpc = 0;
+ lnb->lnb_guard_disk = 0;
+ lnb->lnb_locked = 0;
LASSERTF(plen <= len, "plen %u, len %lld\n", plen,
(long long) len);
(*nrpages)++;
}
- RETURN(0);
+ RETURN(rc);
}
-static struct page *osd_get_page(struct dt_object *dt, loff_t offset, int rw)
+static struct page *osd_get_page(const struct lu_env *env, struct dt_object *dt,
+ loff_t offset, gfp_t gfp_mask, bool cache)
{
- struct inode *inode = osd_dt_obj(dt)->oo_inode;
- struct osd_device *d = osd_obj2dev(osd_dt_obj(dt));
- struct page *page;
+ struct osd_thread_info *oti = osd_oti_get(env);
+ struct inode *inode = osd_dt_obj(dt)->oo_inode;
+ struct osd_device *d = osd_obj2dev(osd_dt_obj(dt));
+ struct page *page;
+ int cur;
LASSERT(inode);
- page = find_or_create_page(inode->i_mapping, offset >> PAGE_CACHE_SHIFT,
- GFP_NOFS | __GFP_HIGHMEM);
- if (unlikely(page == NULL))
- lprocfs_counter_add(d->od_stats, LPROC_OSD_NO_PAGE, 1);
+ if (cache) {
+ page = find_or_create_page(inode->i_mapping,
+ offset >> PAGE_SHIFT, gfp_mask);
+
+ if (likely(page))
+ LASSERT(!test_bit(PG_private_2, &page->flags));
+ else
+ lprocfs_counter_add(d->od_stats, LPROC_OSD_NO_PAGE, 1);
+
+ return page;
+ }
+
+ if (inode->i_mapping->nrpages) {
+ /* consult with pagecache, but do not create new pages */
+ /* this is normally used once */
+ page = find_lock_page(inode->i_mapping, offset >> PAGE_SHIFT);
+ if (page)
+ return page;
+ }
+
+ LASSERT(oti->oti_dio_pages);
+ cur = oti->oti_dio_pages_used;
+
+ if (unlikely(!oti->oti_dio_pages[cur])) {
+ LASSERT(cur < PTLRPC_MAX_BRW_PAGES);
+ page = alloc_page(gfp_mask);
+ if (!page)
+ return NULL;
+ oti->oti_dio_pages[cur] = page;
+ }
+
+ page = oti->oti_dio_pages[cur];
+ LASSERT(!test_bit(PG_private_2, &page->flags));
+ set_bit(PG_private_2, &page->flags);
+ oti->oti_dio_pages_used++;
+
+ LASSERT(!PageLocked(page));
+ lock_page(page);
+
+ LASSERT(!page->mapping);
+ LASSERT(!PageWriteback(page));
+ ClearPageUptodate(page);
- return page;
+ page->index = offset >> PAGE_SHIFT;
+
+ return page;
}
/*
static int osd_bufs_put(const struct lu_env *env, struct dt_object *dt,
struct niobuf_local *lnb, int npages)
{
+ struct osd_thread_info *oti = osd_oti_get(env);
+ struct pagevec pvec;
int i;
+ ll_pagevec_init(&pvec, 0);
+
for (i = 0; i < npages; i++) {
- if (lnb[i].lnb_page == NULL)
+ struct page *page = lnb[i].lnb_page;
+
+ if (page == NULL)
continue;
- LASSERT(PageLocked(lnb[i].lnb_page));
- unlock_page(lnb[i].lnb_page);
- page_cache_release(lnb[i].lnb_page);
- lu_object_put(env, &dt->do_lu);
+
+ /* if the page isn't cached, then reset uptodate
+ * to prevent reuse */
+ if (test_bit(PG_private_2, &page->flags)) {
+ clear_bit(PG_private_2, &page->flags);
+ ClearPageUptodate(page);
+ if (lnb[i].lnb_locked)
+ unlock_page(page);
+ oti->oti_dio_pages_used--;
+ } else {
+ if (lnb[i].lnb_locked)
+ unlock_page(page);
+ if (pagevec_add(&pvec, page) == 0)
+ pagevec_release(&pvec);
+ }
+ dt_object_put(env, dt);
+
lnb[i].lnb_page = NULL;
}
+ LASSERTF(oti->oti_dio_pages_used == 0, "%d\n", oti->oti_dio_pages_used);
+
+ /* Release any partial pagevec */
+ pagevec_release(&pvec);
+
RETURN(0);
}
* \param pos byte offset of IO start
* \param len number of bytes of IO
* \param lnb array of extents undergoing IO
- * \param rw read or write operation?
+ * \param rw read or write operation, and other flags
* \param capa capabilities
*
* \retval pages (zero or more) loaded successfully
*/
static int osd_bufs_get(const struct lu_env *env, struct dt_object *dt,
loff_t pos, ssize_t len, struct niobuf_local *lnb,
- int rw, struct lustre_capa *capa)
+ int maxlnb, enum dt_bufs_type rw)
{
- struct osd_object *obj = osd_dt_obj(dt);
- int npages, i, rc = 0;
+ struct osd_thread_info *oti = osd_oti_get(env);
+ struct osd_object *obj = osd_dt_obj(dt);
+ struct osd_device *osd = osd_obj2dev(obj);
+ int npages, i, iosize, rc = 0;
+ bool cache, write;
+ loff_t fsize;
+ gfp_t gfp_mask;
LASSERT(obj->oo_inode);
- osd_map_remote_to_local(pos, len, &npages, lnb);
-
- for (i = 0; i < npages; i++, lnb++) {
- lnb->lnb_page = osd_get_page(dt, lnb->lnb_file_offset, rw);
- if (lnb->lnb_page == NULL)
- GOTO(cleanup, rc = -ENOMEM);
-
- wait_on_page_writeback(lnb->lnb_page);
- BUG_ON(PageWriteback(lnb->lnb_page));
-
- lu_object_get(&dt->do_lu);
- }
-
- RETURN(i);
-
-cleanup:
- if (i > 0)
- osd_bufs_put(env, dt, lnb - i, i);
- return rc;
-}
-
-#ifndef HAVE_LDISKFS_MAP_BLOCKS
-
-#ifdef HAVE_EXT_PBLOCK /* Name changed to ext4_ext_pblock for kernel 2.6.35 */
-#define ldiskfs_ext_pblock(ex) ext_pblock((ex))
-#endif
-
-struct bpointers {
- unsigned long *blocks;
- unsigned long start;
- int num;
- int init_num;
- int create;
-};
+ rc = osd_map_remote_to_local(pos, len, &npages, lnb, maxlnb);
+ if (rc)
+ RETURN(rc);
-static long ldiskfs_ext_find_goal(struct inode *inode,
- struct ldiskfs_ext_path *path,
- unsigned long block, int *aflags)
-{
- struct ldiskfs_inode_info *ei = LDISKFS_I(inode);
- unsigned long bg_start;
- unsigned long colour;
- int depth;
-
- if (path) {
- struct ldiskfs_extent *ex;
- depth = path->p_depth;
-
- /* try to predict block placement */
- if ((ex = path[depth].p_ext))
- return ldiskfs_ext_pblock(ex) +
- (block - le32_to_cpu(ex->ee_block));
-
- /* it looks index is empty
- * try to find starting from index itself */
- if (path[depth].p_bh)
- return path[depth].p_bh->b_blocknr;
- }
+ write = rw & DT_BUFS_TYPE_WRITE;
- /* OK. use inode's group */
- bg_start = (ei->i_block_group * LDISKFS_BLOCKS_PER_GROUP(inode->i_sb)) +
- le32_to_cpu(LDISKFS_SB(inode->i_sb)->s_es->s_first_data_block);
- colour = (current->pid % 16) *
- (LDISKFS_BLOCKS_PER_GROUP(inode->i_sb) / 16);
- return bg_start + colour + block;
-}
+ fsize = lnb[npages - 1].lnb_file_offset + lnb[npages - 1].lnb_len;
+ iosize = fsize - lnb[0].lnb_file_offset;
+ fsize = max(fsize, i_size_read(obj->oo_inode));
-static unsigned long new_blocks(handle_t *handle, struct inode *inode,
- struct ldiskfs_ext_path *path,
- unsigned long block, unsigned long *count,
- int *err)
-{
- struct ldiskfs_allocation_request ar;
- unsigned long pblock;
- int aflags;
-
- /* find neighbour allocated blocks */
- ar.lleft = block;
- *err = ldiskfs_ext_search_left(inode, path, &ar.lleft, &ar.pleft);
- if (*err)
- return 0;
- ar.lright = block;
- *err = ldiskfs_ext_search_right(inode, path, &ar.lright, &ar.pright);
- if (*err)
- return 0;
+ cache = rw & DT_BUFS_TYPE_READAHEAD;
+ if (cache)
+ goto bypass_checks;
- /* allocate new block */
- ar.goal = ldiskfs_ext_find_goal(inode, path, block, &aflags);
- ar.inode = inode;
- ar.logical = block;
- ar.len = *count;
- ar.flags = LDISKFS_MB_HINT_DATA;
- pblock = ldiskfs_mb_new_blocks(handle, &ar, err);
- *count = ar.len;
- return pblock;
-}
-
-static int ldiskfs_ext_new_extent_cb(struct inode *inode,
- struct ldiskfs_ext_path *path,
- struct ldiskfs_ext_cache *cex,
-#ifdef HAVE_EXT_PREPARE_CB_EXTENT
- struct ldiskfs_extent *ex,
-#endif
- void *cbdata)
-{
- struct bpointers *bp = cbdata;
- struct ldiskfs_extent nex;
- unsigned long pblock;
- unsigned long tgen;
- int err, i;
- unsigned long count;
- handle_t *handle;
-
-#ifdef LDISKFS_EXT_CACHE_EXTENT /* until kernel 2.6.37 */
- if (cex->ec_type == LDISKFS_EXT_CACHE_EXTENT) {
-#else
- if ((cex->ec_len != 0) && (cex->ec_start != 0)) {
-#endif
- err = EXT_CONTINUE;
- goto map;
- }
-
- if (bp->create == 0) {
- i = 0;
- if (cex->ec_block < bp->start)
- i = bp->start - cex->ec_block;
- if (i >= cex->ec_len)
- CERROR("nothing to do?! i = %d, e_num = %u\n",
- i, cex->ec_len);
- for (; i < cex->ec_len && bp->num; i++) {
- *(bp->blocks) = 0;
- bp->blocks++;
- bp->num--;
- bp->start++;
+ cache = osd_use_page_cache(osd);
+ while (cache) {
+ if (write) {
+ if (!osd->od_writethrough_cache) {
+ cache = false;
+ break;
+ }
+ if (iosize > osd->od_writethrough_max_iosize) {
+ cache = false;
+ break;
+ }
+ } else {
+ if (!osd->od_read_cache) {
+ cache = false;
+ break;
+ }
+ if (iosize > osd->od_readcache_max_iosize) {
+ cache = false;
+ break;
+ }
}
-
- return EXT_CONTINUE;
- }
-
- tgen = LDISKFS_I(inode)->i_ext_generation;
- count = ldiskfs_ext_calc_credits_for_insert(inode, path);
-
- handle = osd_journal_start(inode, LDISKFS_HT_MISC,
- count + LDISKFS_ALLOC_NEEDED + 1);
- if (IS_ERR(handle)) {
- return PTR_ERR(handle);
- }
-
- if (tgen != LDISKFS_I(inode)->i_ext_generation) {
- /* the tree has changed. so path can be invalid at moment */
- ldiskfs_journal_stop(handle);
- return EXT_REPEAT;
+ /* don't use cache on large files */
+ if (osd->od_readcache_max_filesize &&
+ fsize > osd->od_readcache_max_filesize)
+ cache = false;
+ break;
}
- /* In 2.6.32 kernel, ldiskfs_ext_walk_space()'s callback func is not
- * protected by i_data_sem as whole. so we patch it to store
- * generation to path and now verify the tree hasn't changed */
- down_write((&LDISKFS_I(inode)->i_data_sem));
-
- /* validate extent, make sure the extent tree does not changed */
- if (LDISKFS_I(inode)->i_ext_generation != path[0].p_generation) {
- /* cex is invalid, try again */
- up_write(&LDISKFS_I(inode)->i_data_sem);
- ldiskfs_journal_stop(handle);
- return EXT_REPEAT;
+bypass_checks:
+ if (!cache && unlikely(!oti->oti_dio_pages)) {
+ OBD_ALLOC(oti->oti_dio_pages,
+ sizeof(struct page *) * PTLRPC_MAX_BRW_PAGES);
+ if (!oti->oti_dio_pages)
+ return -ENOMEM;
}
- count = cex->ec_len;
- pblock = new_blocks(handle, inode, path, cex->ec_block, &count, &err);
- if (!pblock)
- goto out;
- BUG_ON(count > cex->ec_len);
-
- /* insert new extent */
- nex.ee_block = cpu_to_le32(cex->ec_block);
- ldiskfs_ext_store_pblock(&nex, pblock);
- nex.ee_len = cpu_to_le16(count);
- err = ldiskfs_ext_insert_extent(handle, inode, path, &nex, 0);
- if (err) {
- /* free data blocks we just allocated */
- /* not a good idea to call discard here directly,
- * but otherwise we'd need to call it every free() */
- ldiskfs_discard_preallocations(inode);
-#ifdef HAVE_EXT_FREE_BLOCK_WITH_BUFFER_HEAD /* Introduced in 2.6.32-rc7 */
- ldiskfs_free_blocks(handle, inode, NULL,
- ldiskfs_ext_pblock(&nex),
- le16_to_cpu(nex.ee_len), 0);
-#else
- ldiskfs_free_blocks(handle, inode, ldiskfs_ext_pblock(&nex),
- le16_to_cpu(nex.ee_len), 0);
-#endif
- goto out;
- }
+ /* this could also try less hard for DT_BUFS_TYPE_READAHEAD pages */
+ gfp_mask = rw & DT_BUFS_TYPE_LOCAL ? (GFP_NOFS | __GFP_HIGHMEM) :
+ GFP_HIGHUSER;
+ for (i = 0; i < npages; i++, lnb++) {
+ lnb->lnb_page = osd_get_page(env, dt, lnb->lnb_file_offset,
+ gfp_mask, cache);
+ if (lnb->lnb_page == NULL)
+ GOTO(cleanup, rc = -ENOMEM);
- /*
- * Putting len of the actual extent we just inserted,
- * we are asking ldiskfs_ext_walk_space() to continue
- * scaning after that block
- */
- cex->ec_len = le16_to_cpu(nex.ee_len);
- cex->ec_start = ldiskfs_ext_pblock(&nex);
- BUG_ON(le16_to_cpu(nex.ee_len) == 0);
- BUG_ON(le32_to_cpu(nex.ee_block) != cex->ec_block);
+ lnb->lnb_locked = 1;
+ wait_on_page_writeback(lnb->lnb_page);
+ BUG_ON(PageWriteback(lnb->lnb_page));
-out:
- up_write((&LDISKFS_I(inode)->i_data_sem));
- ldiskfs_journal_stop(handle);
-map:
- if (err >= 0) {
- /* map blocks */
- if (bp->num == 0) {
- CERROR("hmm. why do we find this extent?\n");
- CERROR("initial space: %lu:%u\n",
- bp->start, bp->init_num);
-#ifdef LDISKFS_EXT_CACHE_EXTENT /* until kernel 2.6.37 */
- CERROR("current extent: %u/%u/%llu %d\n",
- cex->ec_block, cex->ec_len,
- (unsigned long long)cex->ec_start,
- cex->ec_type);
-#else
- CERROR("current extent: %u/%u/%llu\n",
- cex->ec_block, cex->ec_len,
- (unsigned long long)cex->ec_start);
-#endif
- }
- i = 0;
- if (cex->ec_block < bp->start)
- i = bp->start - cex->ec_block;
- if (i >= cex->ec_len)
- CERROR("nothing to do?! i = %d, e_num = %u\n",
- i, cex->ec_len);
- for (; i < cex->ec_len && bp->num; i++) {
- *(bp->blocks) = cex->ec_start + i;
-#ifdef LDISKFS_EXT_CACHE_EXTENT /* until kernel 2.6.37 */
- if (cex->ec_type != LDISKFS_EXT_CACHE_EXTENT) {
-#else
- if ((cex->ec_len == 0) || (cex->ec_start == 0)) {
-#endif
- /* unmap any possible underlying metadata from
- * the block device mapping. bug 6998. */
- unmap_underlying_metadata(inode->i_sb->s_bdev,
- *(bp->blocks));
- }
- bp->blocks++;
- bp->num--;
- bp->start++;
- }
+ lu_object_get(&dt->do_lu);
}
- return err;
-}
-
-static int osd_ldiskfs_map_nblocks(struct inode *inode, unsigned long block,
- unsigned long num, unsigned long *blocks,
- int create)
-{
- struct bpointers bp;
- int err;
-
- CDEBUG(D_OTHER, "blocks %lu-%lu requested for inode %u\n",
- block, block + num - 1, (unsigned) inode->i_ino);
- bp.blocks = blocks;
- bp.start = block;
- bp.init_num = bp.num = num;
- bp.create = create;
-
- err = ldiskfs_ext_walk_space(inode, block, num,
- ldiskfs_ext_new_extent_cb, &bp);
- ldiskfs_ext_invalidate_cache(inode);
-
- return err;
-}
-
-static int osd_ldiskfs_map_bm_inode_pages(struct inode *inode,
- struct page **page, int pages,
- unsigned long *blocks, int create)
-{
- int blocks_per_page = PAGE_CACHE_SIZE >> inode->i_blkbits;
- pgoff_t bitmap_max_page_index;
- unsigned long *b;
- int rc = 0, i;
-
- bitmap_max_page_index = LDISKFS_SB(inode->i_sb)->s_bitmap_maxbytes >>
- PAGE_SHIFT;
- for (i = 0, b = blocks; i < pages; i++, page++) {
- if ((*page)->index + 1 >= bitmap_max_page_index) {
- rc = -EFBIG;
- break;
- }
- rc = ldiskfs_map_inode_page(inode, *page, b, create);
- if (rc) {
- CERROR("ino %lu, blk %lu create %d: rc %d\n",
- inode->i_ino, *b, create, rc);
- break;
- }
- b += blocks_per_page;
+#if 0
+ /* XXX: this version doesn't invalidate cached pages, but use them */
+ if (!cache && write && obj->oo_inode->i_mapping->nrpages) {
+ /* do not allow data aliasing, invalidate pagecache */
+ /* XXX: can be quite expensive in mixed case */
+ invalidate_mapping_pages(obj->oo_inode->i_mapping,
+ lnb[0].lnb_file_offset >> PAGE_SHIFT,
+ lnb[npages - 1].lnb_file_offset >> PAGE_SHIFT);
}
- return rc;
-}
-
-static int osd_ldiskfs_map_ext_inode_pages(struct inode *inode,
- struct page **page,
- int pages, unsigned long *blocks,
- int create)
-{
- int blocks_per_page = PAGE_CACHE_SIZE >> inode->i_blkbits;
- int rc = 0, i = 0;
- struct page *fp = NULL;
- int clen = 0;
- pgoff_t extent_max_page_index;
-
- extent_max_page_index = inode->i_sb->s_maxbytes >> PAGE_SHIFT;
-
- CDEBUG(D_OTHER, "inode %lu: map %d pages from %lu\n",
- inode->i_ino, pages, (*page)->index);
-
- /* pages are sorted already. so, we just have to find
- * contig. space and process them properly */
- while (i < pages) {
- if (fp == NULL) {
- /* start new extent */
- fp = *page++;
- clen = 1;
- i++;
- continue;
- } else if (fp->index + clen == (*page)->index) {
- /* continue the extent */
- page++;
- clen++;
- i++;
- continue;
- }
-
- if (fp->index + i >= extent_max_page_index)
- GOTO(cleanup, rc = -EFBIG);
-
- /* process found extent */
- rc = osd_ldiskfs_map_nblocks(inode, fp->index * blocks_per_page,
- clen * blocks_per_page, blocks,
- create);
- if (rc)
- GOTO(cleanup, rc);
+#endif
- /* look for next extent */
- fp = NULL;
- blocks += blocks_per_page * clen;
- }
+ RETURN(i);
- if (fp)
- rc = osd_ldiskfs_map_nblocks(inode, fp->index * blocks_per_page,
- clen * blocks_per_page, blocks,
- create);
cleanup:
+ if (i > 0)
+ osd_bufs_put(env, dt, lnb - i, i);
return rc;
}
static int osd_ldiskfs_map_inode_pages(struct inode *inode, struct page **page,
- int pages, unsigned long *blocks,
- int create)
-{
- int rc;
-
- if (LDISKFS_I(inode)->i_flags & LDISKFS_EXTENTS_FL) {
- rc = osd_ldiskfs_map_ext_inode_pages(inode, page, pages,
- blocks, create);
- return rc;
- }
- rc = osd_ldiskfs_map_bm_inode_pages(inode, page, pages, blocks, create);
-
- return rc;
-}
-#else
-static int osd_ldiskfs_map_inode_pages(struct inode *inode, struct page **page,
- int pages, unsigned long *blocks,
+ int pages, sector_t *blocks,
int create)
{
- int blocks_per_page = PAGE_CACHE_SIZE >> inode->i_blkbits;
+ int blocks_per_page = PAGE_SIZE >> inode->i_blkbits;
int rc = 0, i = 0;
struct page *fp = NULL;
int clen = 0;
pgoff_t max_page_index;
+ handle_t *handle = NULL;
max_page_index = inode->i_sb->s_maxbytes >> PAGE_SHIFT;
CDEBUG(D_OTHER, "inode %lu: map %d pages from %lu\n",
inode->i_ino, pages, (*page)->index);
+ if (create) {
+ create = LDISKFS_GET_BLOCKS_CREATE;
+ handle = ldiskfs_journal_current_handle();
+ LASSERT(handle != NULL);
+ rc = osd_attach_jinode(inode);
+ if (rc)
+ return rc;
+ }
/* pages are sorted already. so, we just have to find
* contig. space and process them properly */
while (i < pages) {
long blen, total = 0;
- handle_t *handle = NULL;
struct ldiskfs_map_blocks map = { 0 };
if (fp == NULL) { /* start new extent */
if (++i != pages)
continue;
}
- if (fp->index + i >= max_page_index)
+ if (fp->index + clen >= max_page_index)
GOTO(cleanup, rc = -EFBIG);
/* process found extent */
map.m_lblk = fp->index * blocks_per_page;
map.m_len = blen = clen * blocks_per_page;
- if (create) {
- create = LDISKFS_GET_BLOCKS_CREATE;
- handle = ldiskfs_journal_current_handle();
- LASSERT(handle != NULL);
- }
cont_map:
rc = ldiskfs_map_blocks(handle, inode, &map, create);
if (rc >= 0) {
* mapping. bug 6998. */
if ((map.m_flags & LDISKFS_MAP_NEW) &&
create)
- unmap_underlying_metadata(
+ clean_bdev_aliases(
inode->i_sb->s_bdev,
- map.m_pblk + c);
+ map.m_pblk + c, 1);
}
}
rc = 0;
cleanup:
return rc;
}
-#endif /* HAVE_LDISKFS_MAP_BLOCKS */
static int osd_write_prep(const struct lu_env *env, struct dt_object *dt,
struct niobuf_local *lnb, int npages)
struct osd_iobuf *iobuf = &oti->oti_iobuf;
struct inode *inode = osd_dt_obj(dt)->oo_inode;
struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
- struct timeval start;
- struct timeval end;
- unsigned long timediff;
- ssize_t isize;
- __s64 maxidx;
- int rc = 0;
- int i;
- int cache = 0;
+ ktime_t start, end;
+ s64 timediff;
+ ssize_t isize;
+ __s64 maxidx;
+ int i, rc = 0;
LASSERT(inode);
RETURN(rc);
isize = i_size_read(inode);
- maxidx = ((isize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT) - 1;
-
- if (osd->od_writethrough_cache)
- cache = 1;
- if (isize > osd->od_readcache_max_filesize)
- cache = 0;
+ maxidx = ((isize + PAGE_SIZE - 1) >> PAGE_SHIFT) - 1;
- do_gettimeofday(&start);
+ start = ktime_get();
for (i = 0; i < npages; i++) {
- if (cache == 0)
- generic_error_remove_page(inode->i_mapping,
- lnb[i].lnb_page);
-
/*
* till commit the content of the page is undefined
* we'll set it uptodate once bulk is done. otherwise
*/
ClearPageUptodate(lnb[i].lnb_page);
- if (lnb[i].lnb_len == PAGE_CACHE_SIZE)
+ if (lnb[i].lnb_len == PAGE_SIZE)
continue;
if (maxidx >= lnb[i].lnb_page->index) {
- osd_iobuf_add_page(iobuf, lnb[i].lnb_page);
+ osd_iobuf_add_page(iobuf, &lnb[i]);
} else {
long off;
char *p = kmap(lnb[i].lnb_page);
if (off)
memset(p, 0, off);
off = (lnb[i].lnb_page_offset + lnb[i].lnb_len) &
- ~CFS_PAGE_MASK;
+ ~PAGE_MASK;
if (off)
- memset(p + off, 0, PAGE_CACHE_SIZE - off);
+ memset(p + off, 0, PAGE_SIZE - off);
kunmap(lnb[i].lnb_page);
}
}
- do_gettimeofday(&end);
- timediff = cfs_timeval_sub(&end, &start, NULL);
+ end = ktime_get();
+ timediff = ktime_us_delta(end, start);
lprocfs_counter_add(osd->od_stats, LPROC_OSD_GET_PAGE, timediff);
if (iobuf->dr_npages) {
RETURN(rc);
}
-/* Check if a block is allocated or not */
-static int osd_is_mapped(struct inode *inode, u64 offset)
-{
- sector_t (*fs_bmap)(struct address_space *, sector_t);
+struct osd_fextent {
+ sector_t start;
+ sector_t end;
+ unsigned int mapped:1;
+};
- fs_bmap = inode->i_mapping->a_ops->bmap;
+static int osd_is_mapped(struct dt_object *dt, __u64 offset,
+ struct osd_fextent *cached_extent)
+{
+ struct inode *inode = osd_dt_obj(dt)->oo_inode;
+ sector_t block = offset >> inode->i_blkbits;
+ sector_t start;
+ struct fiemap_extent_info fei = { 0 };
+ struct fiemap_extent fe = { 0 };
+ mm_segment_t saved_fs;
+ int rc;
- /* We can't know if we are overwriting or not */
- if (unlikely(fs_bmap == NULL))
- return 0;
+ if (block >= cached_extent->start && block < cached_extent->end)
+ return cached_extent->mapped;
if (i_size_read(inode) == 0)
return 0;
/* Beyond EOF, must not be mapped */
- if (((i_size_read(inode) - 1) >> inode->i_blkbits) <
- (offset >> inode->i_blkbits))
+ if (((i_size_read(inode) - 1) >> inode->i_blkbits) < block)
return 0;
- if (fs_bmap(inode->i_mapping, offset >> inode->i_blkbits) == 0)
+ fei.fi_extents_max = 1;
+ fei.fi_extents_start = &fe;
+
+ saved_fs = get_fs();
+ set_fs(KERNEL_DS);
+ rc = inode->i_op->fiemap(inode, &fei, offset, FIEMAP_MAX_OFFSET-offset);
+ set_fs(saved_fs);
+ if (rc != 0)
return 0;
- return 1;
+ start = fe.fe_logical >> inode->i_blkbits;
+
+ if (start > block) {
+ cached_extent->start = block;
+ cached_extent->end = start;
+ cached_extent->mapped = 0;
+ } else {
+ cached_extent->start = start;
+ cached_extent->end = (fe.fe_logical + fe.fe_length) >>
+ inode->i_blkbits;
+ cached_extent->mapped = 1;
+ }
+
+ return cached_extent->mapped;
}
static int osd_declare_write_commit(const struct lu_env *env,
struct niobuf_local *lnb, int npages,
struct thandle *handle)
{
- const struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
- struct inode *inode = osd_dt_obj(dt)->oo_inode;
- struct osd_thandle *oh;
- int extents = 1;
- int depth;
- int i;
- int newblocks;
- int rc = 0;
- int flags = 0;
- bool ignore_quota = false;
- long long quota_space = 0;
+ const struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
+ struct inode *inode = osd_dt_obj(dt)->oo_inode;
+ struct osd_thandle *oh;
+ int extents = 1;
+ int depth;
+ int i;
+ int newblocks;
+ int rc = 0;
+ int credits = 0;
+ long long quota_space = 0;
+ struct osd_fextent extent = { 0 };
+ enum osd_quota_local_flags local_flags = 0;
+ enum osd_qid_declare_flags declare_flags = OSD_QID_BLK;
ENTRY;
LASSERT(handle != NULL);
lnb[i - 1].lnb_file_offset + lnb[i - 1].lnb_len)
extents++;
- if (!osd_is_mapped(inode, lnb[i].lnb_file_offset))
- quota_space += PAGE_CACHE_SIZE;
+ if (osd_is_mapped(dt, lnb[i].lnb_file_offset, &extent))
+ lnb[i].lnb_flags |= OBD_BRW_MAPPED;
+ else
+ quota_space += PAGE_SIZE;
/* ignore quota for the whole request if any page is from
* client cache or written by root.
if ((lnb[i].lnb_flags & OBD_BRW_NOQUOTA) ||
(lnb[i].lnb_flags & (OBD_BRW_FROM_GRANT | OBD_BRW_SYNC)) ==
OBD_BRW_FROM_GRANT)
- ignore_quota = true;
+ declare_flags |= OSD_QID_FORCE;
}
/*
depth = ext_depth(inode);
depth = max(depth, 1) + 1;
newblocks += depth;
- oh->ot_credits++; /* inode */
- oh->ot_credits += depth * 2 * extents;
- } else {
- depth = 3;
- newblocks += depth;
- oh->ot_credits++; /* inode */
- oh->ot_credits += depth * extents;
- }
+ credits++; /* inode */
+ credits += depth * 2 * extents;
+ } else {
+ depth = 3;
+ newblocks += depth;
+ credits++; /* inode */
+ credits += depth * extents;
+ }
/* quota space for metadata blocks */
quota_space += depth * extents * LDISKFS_BLOCK_SIZE(osd_sb(osd));
/* we can't dirty more bitmap blocks than exist */
if (newblocks > LDISKFS_SB(osd_sb(osd))->s_groups_count)
- oh->ot_credits += LDISKFS_SB(osd_sb(osd))->s_groups_count;
+ credits += LDISKFS_SB(osd_sb(osd))->s_groups_count;
else
- oh->ot_credits += newblocks;
+ credits += newblocks;
- /* we can't dirty more gd blocks than exist */
- if (newblocks > LDISKFS_SB(osd_sb(osd))->s_gdb_count)
- oh->ot_credits += LDISKFS_SB(osd_sb(osd))->s_gdb_count;
- else
- oh->ot_credits += newblocks;
+ /* we can't dirty more gd blocks than exist */
+ if (newblocks > LDISKFS_SB(osd_sb(osd))->s_gdb_count)
+ credits += LDISKFS_SB(osd_sb(osd))->s_gdb_count;
+ else
+ credits += newblocks;
+
+ osd_trans_declare_op(env, oh, OSD_OT_WRITE, credits);
/* make sure the over quota flags were not set */
- lnb[0].lnb_flags &= ~(OBD_BRW_OVER_USRQUOTA | OBD_BRW_OVER_GRPQUOTA);
+ lnb[0].lnb_flags &= ~OBD_BRW_OVER_ALLQUOTA;
rc = osd_declare_inode_qid(env, i_uid_read(inode), i_gid_read(inode),
- quota_space, oh, osd_dt_obj(dt), true,
- &flags, ignore_quota);
+ i_projid_read(inode), quota_space, oh,
+ osd_dt_obj(dt), &local_flags, declare_flags);
/* we need only to store the overquota flags in the first lnb for
* now, once we support multiple objects BRW, this code needs be
* revised. */
- if (flags & QUOTA_FL_OVER_USRQUOTA)
+ if (local_flags & QUOTA_FL_OVER_USRQUOTA)
lnb[0].lnb_flags |= OBD_BRW_OVER_USRQUOTA;
- if (flags & QUOTA_FL_OVER_GRPQUOTA)
+ if (local_flags & QUOTA_FL_OVER_GRPQUOTA)
lnb[0].lnb_flags |= OBD_BRW_OVER_GRPQUOTA;
+ if (local_flags & QUOTA_FL_OVER_PRJQUOTA)
+ lnb[0].lnb_flags |= OBD_BRW_OVER_PRJQUOTA;
+
+ if (rc == 0)
+ rc = osd_trunc_lock(osd_dt_obj(dt), oh, true);
RETURN(rc);
}
RETURN(rc);
isize = i_size_read(inode);
- ll_vfs_dq_init(inode);
+ dquot_initialize(inode);
for (i = 0; i < npages; i++) {
if (lnb[i].lnb_rc == -ENOSPC &&
- osd_is_mapped(inode, lnb[i].lnb_file_offset)) {
+ (lnb[i].lnb_flags & OBD_BRW_MAPPED)) {
/* Allow the write to proceed if overwriting an
* existing block */
lnb[i].lnb_rc = 0;
SetPageUptodate(lnb[i].lnb_page);
- osd_iobuf_add_page(iobuf, lnb[i].lnb_page);
+ osd_iobuf_add_page(iobuf, &lnb[i]);
}
+ osd_trans_exec_op(env, thandle, OSD_OT_WRITE);
+
if (OBD_FAIL_CHECK(OBD_FAIL_OST_MAPBLK_ENOSPC)) {
rc = -ENOSPC;
} else if (iobuf->dr_npages > 0) {
thandle->th_local = 1;
}
- if (likely(rc == 0)) {
- if (isize > i_size_read(inode)) {
- i_size_write(inode, isize);
- LDISKFS_I(inode)->i_disksize = isize;
+ if (likely(rc == 0)) {
+ spin_lock(&inode->i_lock);
+ if (isize > i_size_read(inode)) {
+ i_size_write(inode, isize);
+ LDISKFS_I(inode)->i_disksize = isize;
+ spin_unlock(&inode->i_lock);
ll_dirty_inode(inode, I_DIRTY_DATASYNC);
- }
+ } else {
+ spin_unlock(&inode->i_lock);
+ }
- rc = osd_do_bio(osd, inode, iobuf);
- /* we don't do stats here as in read path because
- * write is async: we'll do this in osd_put_bufs() */
+ rc = osd_do_bio(osd, inode, iobuf);
+ /* we don't do stats here as in read path because
+ * write is async: we'll do this in osd_put_bufs() */
} else {
osd_fini_iobuf(osd, iobuf);
}
- if (unlikely(rc != 0)) {
- /* if write fails, we should drop pages from the cache */
- for (i = 0; i < npages; i++) {
+ osd_trans_exec_check(env, thandle, OSD_OT_WRITE);
+
+ if (unlikely(rc != 0)) {
+ /* if write fails, we should drop pages from the cache */
+ for (i = 0; i < npages; i++) {
if (lnb[i].lnb_page == NULL)
continue;
LASSERT(PageLocked(lnb[i].lnb_page));
struct osd_iobuf *iobuf = &oti->oti_iobuf;
struct inode *inode = osd_dt_obj(dt)->oo_inode;
struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
- struct timeval start, end;
- unsigned long timediff;
- int rc = 0, i, cache = 0, cache_hits = 0, cache_misses = 0;
+ int rc = 0, i, cache_hits = 0, cache_misses = 0;
+ ktime_t start, end;
+ s64 timediff;
loff_t isize;
LASSERT(inode);
isize = i_size_read(inode);
- if (osd->od_read_cache)
- cache = 1;
- if (isize > osd->od_readcache_max_filesize)
- cache = 0;
-
- do_gettimeofday(&start);
+ start = ktime_get();
for (i = 0; i < npages; i++) {
if (isize <= lnb[i].lnb_file_offset)
* lnb->lnb_rc == 0, so it's easy to detect later. */
break;
- if (isize < lnb[i].lnb_file_offset + lnb[i].lnb_len - 1)
- lnb[i].lnb_rc = isize - lnb[i].lnb_file_offset;
- else
- lnb[i].lnb_rc = lnb[i].lnb_len;
+ /* instead of looking if we go beyong isize, send complete
+ * pages all the time
+ */
+ lnb[i].lnb_rc = lnb[i].lnb_len;
+
+ /* Bypass disk read if fail_loc is set properly */
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_FAKE_RW))
+ SetPageUptodate(lnb[i].lnb_page);
if (PageUptodate(lnb[i].lnb_page)) {
cache_hits++;
+ unlock_page(lnb[i].lnb_page);
} else {
cache_misses++;
- osd_iobuf_add_page(iobuf, lnb[i].lnb_page);
+ osd_iobuf_add_page(iobuf, &lnb[i]);
}
-
- if (cache == 0)
- generic_error_remove_page(inode->i_mapping,
- lnb[i].lnb_page);
+ /* no need to unlock in osd_bufs_put(), the sooner page is
+ * unlocked, the earlier another client can access it.
+ * notice real unlock_page() can be called few lines
+ * below after osd_do_bio(). lnb is a per-thread, so it's
+ * fine to have PG_locked and lnb_locked inconsistent here */
+ lnb[i].lnb_locked = 0;
}
- do_gettimeofday(&end);
- timediff = cfs_timeval_sub(&end, &start, NULL);
+ end = ktime_get();
+ timediff = ktime_us_delta(end, start);
lprocfs_counter_add(osd->od_stats, LPROC_OSD_GET_PAGE, timediff);
if (cache_hits != 0)
lprocfs_counter_add(osd->od_stats, LPROC_OSD_CACHE_ACCESS,
cache_hits + cache_misses);
- if (iobuf->dr_npages) {
+ if (iobuf->dr_npages) {
rc = osd_ldiskfs_map_inode_pages(inode, iobuf->dr_pages,
iobuf->dr_npages,
iobuf->dr_blocks, 0);
- rc = osd_do_bio(osd, inode, iobuf);
+ rc = osd_do_bio(osd, inode, iobuf);
- /* IO stats will be done in osd_bufs_put() */
- }
+ /* IO stats will be done in osd_bufs_put() */
- RETURN(rc);
+ /* early release to let others read data during the bulk */
+ for (i = 0; i < iobuf->dr_npages; i++) {
+ LASSERT(PageLocked(iobuf->dr_pages[i]));
+ unlock_page(iobuf->dr_pages[i]);
+ }
+ }
+
+ RETURN(rc);
}
/*
int blocksize;
int csize;
int boffs;
- int err;
/* prevent reading after eof */
spin_lock(&inode->i_lock);
loff_t diff = i_size_read(inode) - *offs;
spin_unlock(&inode->i_lock);
if (diff < 0) {
- CDEBUG(D_EXT2, "size %llu is too short to read @%llu\n",
+ CDEBUG(D_OTHER,
+ "size %llu is too short to read @%llu\n",
i_size_read(inode), *offs);
return -EBADR;
} else if (diff == 0) {
block = *offs >> inode->i_blkbits;
boffs = *offs & (blocksize - 1);
csize = min(blocksize - boffs, size);
- bh = ldiskfs_bread(NULL, inode, block, 0, &err);
- if (err != 0) {
- CERROR("%s: can't read %u@%llu on ino %lu: rc = %d\n",
- LDISKFS_SB(inode->i_sb)->s_es->s_volume_name,
- csize, *offs, inode->i_ino, err);
- if (bh != NULL)
- brelse(bh);
- return err;
+ bh = __ldiskfs_bread(NULL, inode, block, 0);
+ if (IS_ERR(bh)) {
+ CERROR("%s: can't read %u@%llu on ino %lu: "
+ "rc = %ld\n", osd_ino2name(inode),
+ csize, *offs, inode->i_ino,
+ PTR_ERR(bh));
+ return PTR_ERR(bh);
}
if (bh != NULL) {
}
static ssize_t osd_read(const struct lu_env *env, struct dt_object *dt,
- struct lu_buf *buf, loff_t *pos,
- struct lustre_capa *capa)
+ struct lu_buf *buf, loff_t *pos)
{
struct inode *inode = osd_dt_obj(dt)->oo_inode;
int rc;
- if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_READ))
- RETURN(-EACCES);
-
/* Read small symlink from inode body as we need to maintain correct
* on-disk symlinks for ldiskfs.
*/
if (inode != NULL) {
if (LDISKFS_I(inode)->i_flags & LDISKFS_EXTENTS_FL)
return 1;
- } else if (LDISKFS_HAS_INCOMPAT_FEATURE(sb,
- LDISKFS_FEATURE_INCOMPAT_EXTENTS)) {
+ } else if (ldiskfs_has_feature_extents(sb)) {
return 1;
}
return 0;
}
-static inline int osd_calc_bkmap_credits(struct super_block *sb,
- struct inode *inode,
- const loff_t size,
- const loff_t pos,
- const int blocks)
+int osd_calc_bkmap_credits(struct super_block *sb, struct inode *inode,
+ const loff_t size, const loff_t pos,
+ const int blocks)
{
int credits, bits, bs, i;
} else if (pos + size <= (LDISKFS_NDIR_BLOCKS + 1024) * bs) {
/* single indirect */
credits = blocks * 3;
- /* probably indirect block has been allocated already */
- if (!inode || LDISKFS_I(inode)->i_data[LDISKFS_IND_BLOCK])
+ if (inode == NULL ||
+ LDISKFS_I(inode)->i_data[LDISKFS_IND_BLOCK] == 0)
credits += 3;
+ else
+ /* The indirect block may be modified. */
+ credits += 1;
}
return credits;
credits = depth;
/* if not append, then split may need to modify
* existing blocks moving entries into the new ones */
- if (_pos == -1)
+ if (_pos != -1)
credits += depth;
/* blocks to store data: bitmap,gd,itself */
credits += blocks * 3;
* objects, so always set the lqi_space as 0. */
if (inode != NULL)
rc = osd_declare_inode_qid(env, i_uid_read(inode),
- i_gid_read(inode), 0, oh, obj, true,
- NULL, false);
+ i_gid_read(inode),
+ i_projid_read(inode), 0,
+ oh, obj, NULL, OSD_QID_BLK);
+
+ if (rc == 0)
+ rc = osd_trunc_lock(obj, oh, true);
+
RETURN(rc);
}
/* LU-2634: clear the extent format for fast symlink */
ldiskfs_clear_inode_flag(inode, LDISKFS_INODE_EXTENTS);
- memcpy((char *)&LDISKFS_I(inode)->i_data, (char *)buffer, buflen);
- LDISKFS_I(inode)->i_disksize = buflen;
- i_size_write(inode, buflen);
+ memcpy((char *)&LDISKFS_I(inode)->i_data, (char *)buffer, buflen);
+ spin_lock(&inode->i_lock);
+ LDISKFS_I(inode)->i_disksize = buflen;
+ i_size_write(inode, buflen);
+ spin_unlock(&inode->i_lock);
ll_dirty_inode(inode, I_DIRTY_DATASYNC);
- return 0;
+ return 0;
}
-int osd_ldiskfs_write_record(struct inode *inode, void *buf, int bufsize,
- int write_NUL, loff_t *offs, handle_t *handle)
+static int osd_ldiskfs_write_record(struct dt_object *dt, void *buf,
+ int bufsize, int write_NUL, loff_t *offs,
+ handle_t *handle)
{
+ struct inode *inode = osd_dt_obj(dt)->oo_inode;
struct buffer_head *bh = NULL;
loff_t offset = *offs;
loff_t new_size = i_size_read(inode);
int size;
int boffs;
int dirty_inode = 0;
+ struct ldiskfs_inode_info *ei = LDISKFS_I(inode);
+ bool create, sparse, sync = false;
if (write_NUL) {
/*
((char *)buf)[bufsize] = '\0';
++bufsize;
}
- while (bufsize > 0) {
- if (bh != NULL)
- brelse(bh);
-
- block = offset >> inode->i_blkbits;
- boffs = offset & (blocksize - 1);
- size = min(blocksize - boffs, bufsize);
- bh = ldiskfs_bread(handle, inode, block, 1, &err);
- if (!bh) {
- CERROR("%s: error reading offset %llu (block %lu): "
- "rc = %d\n",
- inode->i_sb->s_id, offset, block, err);
+
+ /* sparse checking is racy, but sparse is very rare case, leave as is */
+ sparse = (new_size > 0 && (inode->i_blocks >> (inode->i_blkbits - 9)) <
+ ((new_size - 1) >> inode->i_blkbits) + 1);
+
+ while (bufsize > 0) {
+ int credits = handle->h_buffer_credits;
+ unsigned long last_block = (new_size == 0) ? 0 :
+ (new_size - 1) >> inode->i_blkbits;
+
+ if (bh)
+ brelse(bh);
+
+ block = offset >> inode->i_blkbits;
+ boffs = offset & (blocksize - 1);
+ size = min(blocksize - boffs, bufsize);
+ sync = (block > last_block || new_size == 0 || sparse);
+
+ if (sync)
+ down(&ei->i_append_sem);
+
+ bh = __ldiskfs_bread(handle, inode, block, 0);
+
+ if (unlikely(IS_ERR_OR_NULL(bh) && !sync))
+ CWARN("%s: adding bh without locking off %llu (block %lu, "
+ "size %d, offs %llu)\n", inode->i_sb->s_id,
+ offset, block, bufsize, *offs);
+
+ if (IS_ERR_OR_NULL(bh)) {
+ struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
+ int flags = LDISKFS_GET_BLOCKS_CREATE;
+
+ /* while the file system is being mounted, avoid
+ * preallocation otherwise mount can take a long
+ * time as mballoc cache is cold.
+ * XXX: this is a workaround until we have a proper
+ * fix in mballoc
+ * XXX: works with extent-based files only */
+ if (!osd->od_cl_seq)
+ flags |= LDISKFS_GET_BLOCKS_NO_NORMALIZE;
+ bh = __ldiskfs_bread(handle, inode, block, flags);
+ create = true;
+ } else {
+ if (sync) {
+ up(&ei->i_append_sem);
+ sync = false;
+ }
+ create = false;
+ }
+ if (IS_ERR_OR_NULL(bh)) {
+ if (bh == NULL) {
+ err = -EIO;
+ } else {
+ err = PTR_ERR(bh);
+ bh = NULL;
+ }
+
+ CERROR("%s: error reading offset %llu (block %lu, "
+ "size %d, offs %llu), credits %d/%d: rc = %d\n",
+ inode->i_sb->s_id, offset, block, bufsize, *offs,
+ credits, handle->h_buffer_credits, err);
break;
}
LASSERTF(boffs + size <= bh->b_size,
"boffs %d size %d bh->b_size %lu\n",
boffs, size, (unsigned long)bh->b_size);
- memcpy(bh->b_data + boffs, buf, size);
+ if (create) {
+ memset(bh->b_data, 0, bh->b_size);
+ if (sync) {
+ up(&ei->i_append_sem);
+ sync = false;
+ }
+ }
+ memcpy(bh->b_data + boffs, buf, size);
err = ldiskfs_handle_dirty_metadata(handle, NULL, bh);
if (err)
break;
bufsize -= size;
buf += size;
}
- if (bh)
- brelse(bh);
+ if (sync)
+ up(&ei->i_append_sem);
+
+ if (bh)
+ brelse(bh);
if (write_NUL)
--new_size;
- /* correct in-core and on-disk sizes */
- if (new_size > i_size_read(inode)) {
+ /* correct in-core and on-disk sizes */
+ if (new_size > i_size_read(inode)) {
spin_lock(&inode->i_lock);
if (new_size > i_size_read(inode))
i_size_write(inode, new_size);
}
static ssize_t osd_write(const struct lu_env *env, struct dt_object *dt,
- const struct lu_buf *buf, loff_t *pos,
- struct thandle *handle, struct lustre_capa *capa,
- int ignore_quota)
+ const struct lu_buf *buf, loff_t *pos,
+ struct thandle *handle)
{
struct inode *inode = osd_dt_obj(dt)->oo_inode;
struct osd_thandle *oh;
LASSERT(dt_object_exists(dt));
- if (osd_object_auth(env, dt, capa, CAPA_OPC_BODY_WRITE))
- return -EACCES;
-
LASSERT(handle != NULL);
LASSERT(inode != NULL);
- ll_vfs_dq_init(inode);
+ dquot_initialize(inode);
/* XXX: don't check: one declared chunk can be used many times */
/* osd_trans_exec_op(env, handle, OSD_OT_WRITE); */
oh = container_of(handle, struct osd_thandle, ot_super);
LASSERT(oh->ot_handle->h_transaction != NULL);
+ osd_trans_exec_op(env, handle, OSD_OT_WRITE);
+
/* Write small symlink to inode body as we need to maintain correct
* on-disk symlinks for ldiskfs.
* Note: the buf->lb_buf contains a NUL terminator while buf->lb_len
if (is_link && (buf->lb_len < sizeof(LDISKFS_I(inode)->i_data)))
result = osd_ldiskfs_writelink(inode, buf->lb_buf, buf->lb_len);
else
- result = osd_ldiskfs_write_record(inode, buf->lb_buf,
- buf->lb_len, is_link, pos,
- oh->ot_handle);
- if (result == 0)
- result = buf->lb_len;
- return result;
+ result = osd_ldiskfs_write_record(dt, buf->lb_buf, buf->lb_len,
+ is_link, pos, oh->ot_handle);
+ if (result == 0)
+ result = buf->lb_len;
+
+ osd_trans_exec_check(env, handle, OSD_OT_WRITE);
+
+ return result;
}
static int osd_declare_punch(const struct lu_env *env, struct dt_object *dt,
LASSERT(inode);
rc = osd_declare_inode_qid(env, i_uid_read(inode), i_gid_read(inode),
- 0, oh, osd_dt_obj(dt), true, NULL, false);
+ i_projid_read(inode), 0, oh, osd_dt_obj(dt),
+ NULL, OSD_QID_BLK);
+
+ if (rc == 0)
+ rc = osd_trunc_lock(osd_dt_obj(dt), oh, false);
+
RETURN(rc);
}
static int osd_punch(const struct lu_env *env, struct dt_object *dt,
- __u64 start, __u64 end, struct thandle *th,
- struct lustre_capa *capa)
+ __u64 start, __u64 end, struct thandle *th)
{
+ struct osd_object *obj = osd_dt_obj(dt);
+ struct osd_device *osd = osd_obj2dev(obj);
+ struct inode *inode = obj->oo_inode;
+ struct osd_access_lock *al;
struct osd_thandle *oh;
- struct osd_object *obj = osd_dt_obj(dt);
- struct inode *inode = obj->oo_inode;
- handle_t *h;
- tid_t tid;
- int rc = 0, rc2 = 0;
+ int rc = 0, found = 0;
+ bool grow = false;
ENTRY;
LASSERT(end == OBD_OBJECT_EOF);
LASSERT(dt_object_exists(dt));
LASSERT(osd_invariant(obj));
LASSERT(inode != NULL);
- ll_vfs_dq_init(inode);
+ dquot_initialize(inode);
LASSERT(th);
oh = container_of(th, struct osd_thandle, ot_super);
LASSERT(oh->ot_handle->h_transaction != NULL);
- osd_trans_exec_op(env, th, OSD_OT_PUNCH);
+ /* we used to skip truncate to current size to
+ * optimize truncates on OST. with DoM we can
+ * get attr_set to set specific size (MDS_REINT)
+ * and then get truncate RPC which essentially
+ * would be skipped. this is bad.. so, disable
+ * this optimization on MDS till the client stop
+ * to sent MDS_REINT (LU-11033) -bzzz */
+ if (osd->od_is_ost && i_size_read(inode) == start)
+ RETURN(0);
- tid = oh->ot_handle->h_transaction->t_tid;
+ osd_trans_exec_op(env, th, OSD_OT_PUNCH);
+ spin_lock(&inode->i_lock);
+ if (i_size_read(inode) < start)
+ grow = true;
i_size_write(inode, start);
+ spin_unlock(&inode->i_lock);
ll_truncate_pagecache(inode, start);
-#ifdef HAVE_INODEOPS_TRUNCATE
- if (inode->i_op->truncate) {
- inode->i_op->truncate(inode);
- } else
-#endif
- ldiskfs_truncate(inode);
- /*
- * For a partial-page truncate, flush the page to disk immediately to
- * avoid data corruption during direct disk write. b=17397
- */
- if ((start & ~CFS_PAGE_MASK) != 0)
- rc = filemap_fdatawrite_range(inode->i_mapping, start, start+1);
+ /* optimize grow case */
+ if (grow) {
+ osd_execute_truncate(obj);
+ GOTO(out, rc);
+ }
- h = journal_current_handle();
- LASSERT(h != NULL);
- LASSERT(h == oh->ot_handle);
+ /* add to orphan list to ensure truncate completion
+ * if this transaction succeed. ldiskfs_truncate()
+ * will take the inode out of the list */
+ rc = ldiskfs_orphan_add(oh->ot_handle, inode);
+ if (rc != 0)
+ GOTO(out, rc);
- if (tid != h->h_transaction->t_tid) {
- int credits = oh->ot_credits;
- /*
- * transaction has changed during truncate
- * we need to restart the handle with our credits
- */
- if (h->h_buffer_credits < credits) {
- if (ldiskfs_journal_extend(h, credits))
- rc2 = ldiskfs_journal_restart(h, credits);
- }
- }
+ list_for_each_entry(al, &oh->ot_trunc_locks, tl_list) {
+ if (obj != al->tl_obj)
+ continue;
+ LASSERT(al->tl_shared == 0);
+ found = 1;
+ /* do actual truncate in osd_trans_stop() */
+ al->tl_truncate = 1;
+ break;
+ }
+ LASSERT(found);
- RETURN(rc == 0 ? rc2 : rc);
+out:
+ RETURN(rc);
}
static int fiemap_check_ranges(struct inode *inode,
#define FIEMAP_MAX_EXTENTS (UINT_MAX / sizeof(struct fiemap_extent))
static int osd_fiemap_get(const struct lu_env *env, struct dt_object *dt,
- struct ll_user_fiemap *fm)
+ struct fiemap *fm)
{
struct fiemap_extent_info fieinfo = {0, };
struct inode *inode = osd_dt_obj(dt)->oo_inode;
u64 len;
int rc;
-
+ mm_segment_t cur_fs;
LASSERT(inode);
if (inode->i_op->fiemap == NULL)
if (fieinfo.fi_flags & FIEMAP_FLAG_SYNC)
filemap_write_and_wait(inode->i_mapping);
+ /* Save previous value address limit */
+ cur_fs = get_fs();
+ /* Set the address limit of the kernel */
+ set_fs(KERNEL_DS);
+
rc = inode->i_op->fiemap(inode, &fieinfo, fm->fm_start, len);
fm->fm_flags = fieinfo.fi_flags;
fm->fm_mapped_extents = fieinfo.fi_extents_mapped;
+ /* Restore the previous address limt */
+ set_fs(cur_fs);
+
return rc;
}
+static int osd_ladvise(const struct lu_env *env, struct dt_object *dt,
+ __u64 start, __u64 end, enum lu_ladvise_type advice)
+{
+ struct osd_object *obj = osd_dt_obj(dt);
+ int rc = 0;
+ ENTRY;
+
+ switch (advice) {
+ case LU_LADVISE_DONTNEED:
+ if (end)
+ invalidate_mapping_pages(obj->oo_inode->i_mapping,
+ start >> PAGE_SHIFT,
+ (end - 1) >> PAGE_SHIFT);
+ break;
+ default:
+ rc = -ENOTSUPP;
+ break;
+ }
+
+ RETURN(rc);
+}
+
/*
* in some cases we may need declare methods for objects being created
* e.g., when we create symlink
};
const struct dt_body_operations osd_body_ops = {
- .dbo_read = osd_read,
- .dbo_declare_write = osd_declare_write,
- .dbo_write = osd_write,
- .dbo_bufs_get = osd_bufs_get,
- .dbo_bufs_put = osd_bufs_put,
- .dbo_write_prep = osd_write_prep,
- .dbo_declare_write_commit = osd_declare_write_commit,
- .dbo_write_commit = osd_write_commit,
- .dbo_read_prep = osd_read_prep,
- .dbo_declare_punch = osd_declare_punch,
- .dbo_punch = osd_punch,
- .dbo_fiemap_get = osd_fiemap_get,
+ .dbo_read = osd_read,
+ .dbo_declare_write = osd_declare_write,
+ .dbo_write = osd_write,
+ .dbo_bufs_get = osd_bufs_get,
+ .dbo_bufs_put = osd_bufs_put,
+ .dbo_write_prep = osd_write_prep,
+ .dbo_declare_write_commit = osd_declare_write_commit,
+ .dbo_write_commit = osd_write_commit,
+ .dbo_read_prep = osd_read_prep,
+ .dbo_declare_punch = osd_declare_punch,
+ .dbo_punch = osd_punch,
+ .dbo_fiemap_get = osd_fiemap_get,
+ .dbo_ladvise = osd_ladvise,
};
+/**
+ * Get a truncate lock
+ *
+ * In order to take multi-transaction truncate out of main transaction we let
+ * the caller grab a lock on the object passed. the lock can be shared (for
+ * writes) and exclusive (for truncate). It's not allowed to mix truncate
+ * and write in the same transaction handle (do not confuse with big ldiskfs
+ * transaction containing lots of handles).
+ * The lock must be taken at declaration.
+ *
+ * \param obj object to lock
+ * \oh transaction
+ * \shared shared or exclusive
+ *
+ * \retval 0 lock is granted
+ * \retval -NOMEM no memory to allocate lock
+ */
+int osd_trunc_lock(struct osd_object *obj, struct osd_thandle *oh, bool shared)
+{
+ struct osd_access_lock *al, *tmp;
+
+ LASSERT(obj);
+ LASSERT(oh);
+
+ list_for_each_entry(tmp, &oh->ot_trunc_locks, tl_list) {
+ if (tmp->tl_obj != obj)
+ continue;
+ LASSERT(tmp->tl_shared == shared);
+ /* found same lock */
+ return 0;
+ }
+
+ OBD_ALLOC_PTR(al);
+ if (unlikely(al == NULL))
+ return -ENOMEM;
+ al->tl_obj = obj;
+ al->tl_truncate = false;
+ if (shared)
+ down_read(&obj->oo_ext_idx_sem);
+ else
+ down_write(&obj->oo_ext_idx_sem);
+ al->tl_shared = shared;
+
+ list_add(&al->tl_list, &oh->ot_trunc_locks);
+
+ return 0;
+}
+
+void osd_trunc_unlock_all(struct list_head *list)
+{
+ struct osd_access_lock *al, *tmp;
+ list_for_each_entry_safe(al, tmp, list, tl_list) {
+ if (al->tl_shared)
+ up_read(&al->tl_obj->oo_ext_idx_sem);
+ else
+ up_write(&al->tl_obj->oo_ext_idx_sem);
+ list_del(&al->tl_list);
+ OBD_FREE_PTR(al);
+ }
+}
+
+void osd_execute_truncate(struct osd_object *obj)
+{
+ struct osd_device *d = osd_obj2dev(obj);
+ struct inode *inode = obj->oo_inode;
+ __u64 size;
+
+ /* simulate crash before (in the middle) of delayed truncate */
+ if (OBD_FAIL_CHECK(OBD_FAIL_OSD_FAIL_AT_TRUNCATE)) {
+ struct ldiskfs_inode_info *ei = LDISKFS_I(inode);
+ struct ldiskfs_sb_info *sbi = LDISKFS_SB(inode->i_sb);
+
+ mutex_lock(&sbi->s_orphan_lock);
+ list_del_init(&ei->i_orphan);
+ mutex_unlock(&sbi->s_orphan_lock);
+ return;
+ }
+
+ inode_lock(inode);
+ ldiskfs_truncate(inode);
+ inode_unlock(inode);
+
+ /*
+ * For a partial-page truncate, flush the page to disk immediately to
+ * avoid data corruption during direct disk write. b=17397
+ */
+ size = i_size_read(inode);
+ if ((size & ~PAGE_MASK) == 0)
+ return;
+ if (osd_use_page_cache(d)) {
+ filemap_fdatawrite_range(inode->i_mapping, size, size + 1);
+ } else {
+ /* Notice we use "wait" version to ensure I/O is complete */
+ filemap_write_and_wait_range(inode->i_mapping, size, size + 1);
+ invalidate_mapping_pages(inode->i_mapping, size >> PAGE_SHIFT,
+ size >> PAGE_SHIFT);
+ }
+}
+
+void osd_process_truncates(struct list_head *list)
+{
+ struct osd_access_lock *al;
+
+ LASSERT(journal_current_handle() == NULL);
+
+ list_for_each_entry(al, list, tl_list) {
+ if (al->tl_shared)
+ continue;
+ if (!al->tl_truncate)
+ continue;
+ osd_execute_truncate(al->tl_obj);
+ }
+}