/* ----- extent part 0 ----- */ \
__ext, EXTPARA(__ext), \
/* ----- part 1 ----- */ \
- atomic_read(&__ext->oe_refc), \
- atomic_read(&__ext->oe_users), \
+ atomic_read(&__ext->oe_refc), \
+ atomic_read(&__ext->oe_users), \
list_empty_marker(&__ext->oe_link), \
oes_strings[__ext->oe_state], ext_flags(__ext, __buf), \
__ext->oe_obj, \
if (ext->oe_osclock) {
struct cl_lock_descr *descr;
+
descr = &ext->oe_osclock->cll_descr;
if (!(descr->cld_start <= ext->oe_start &&
descr->cld_end >= ext->oe_max_end)) {
#define sanity_check_nolock(ext) \
osc_extent_sanity_check0(ext, __func__, __LINE__)
-#define sanity_check(ext) ({ \
- int __res; \
+#define sanity_check(ext) ({ \
+ int __res; \
osc_object_lock((ext)->oe_obj); \
- __res = sanity_check_nolock(ext); \
- osc_object_unlock((ext)->oe_obj); \
- __res; \
+ __res = sanity_check_nolock(ext); \
+ osc_object_unlock((ext)->oe_obj); \
+ __res; \
})
-
/**
* sanity check - to make sure there is no overlapped extent in the tree.
*/
{
struct osc_extent *ext;
- OBD_SLAB_ALLOC_PTR_GFP(ext, osc_extent_kmem, GFP_IOFS);
+ ext = kmem_cache_alloc(osc_extent_kmem, GFP_NOFS | __GFP_ZERO);
if (ext == NULL)
return NULL;
static void osc_extent_free(struct osc_extent *ext)
{
- OBD_SLAB_FREE_PTR(ext, osc_extent_kmem);
+ kmem_cache_free(osc_extent_kmem, ext);
}
static struct osc_extent *osc_extent_get(struct osc_extent *ext)
static struct osc_extent *osc_extent_search(struct osc_object *obj,
pgoff_t index)
{
- struct rb_node *n = obj->oo_root.rb_node;
+ struct rb_node *n = obj->oo_root.rb_node;
struct osc_extent *tmp, *p = NULL;
LASSERT(osc_object_is_locked(obj));
/* caller must have held object lock. */
static void osc_extent_insert(struct osc_object *obj, struct osc_extent *ext)
{
- struct rb_node **n = &obj->oo_root.rb_node;
- struct rb_node *parent = NULL;
+ struct rb_node **n = &obj->oo_root.rb_node;
+ struct rb_node *parent = NULL;
struct osc_extent *tmp;
LASSERT(ext->oe_intree == 0);
static void osc_extent_erase(struct osc_extent *ext)
{
struct osc_object *obj = ext->oe_obj;
+
LASSERT(osc_object_is_locked(obj));
if (ext->oe_intree) {
rb_erase(&ext->oe_node, &obj->oo_root);
LASSERT(cur->oe_osclock == victim->oe_osclock);
ppc_bits = osc_cli(obj)->cl_chunkbits - PAGE_CACHE_SHIFT;
chunk_start = cur->oe_start >> ppc_bits;
- chunk_end = cur->oe_end >> ppc_bits;
- if (chunk_start != (victim->oe_end >> ppc_bits) + 1 &&
+ chunk_end = cur->oe_end >> ppc_bits;
+ if (chunk_start != (victim->oe_end >> ppc_bits) + 1 &&
chunk_end + 1 != victim->oe_start >> ppc_bits)
return -ERANGE;
OSC_EXTENT_DUMP(D_CACHE, victim, "will be merged by %p.\n", cur);
- cur->oe_start = min(cur->oe_start, victim->oe_start);
- cur->oe_end = max(cur->oe_end, victim->oe_end);
- cur->oe_grants += victim->oe_grants;
+ cur->oe_start = min(cur->oe_start, victim->oe_start);
+ cur->oe_end = max(cur->oe_end, victim->oe_end);
+ cur->oe_grants += victim->oe_grants;
cur->oe_nr_pages += victim->oe_nr_pages;
/* only the following bits are needed to merge */
- cur->oe_urgent |= victim->oe_urgent;
+ cur->oe_urgent |= victim->oe_urgent;
cur->oe_memalloc |= victim->oe_memalloc;
list_splice_init(&victim->oe_pages, &cur->oe_pages);
list_del_init(&victim->oe_link);
{
struct client_obd *cli = osc_cli(obj);
- struct cl_lock *lock;
+ struct cl_lock *lock;
struct osc_extent *cur;
struct osc_extent *ext;
struct osc_extent *conflict = NULL;
struct osc_extent *found = NULL;
- pgoff_t chunk;
- pgoff_t max_end;
- int max_pages; /* max_pages_per_rpc */
- int chunksize;
- int ppc_bits; /* pages per chunk bits */
- int chunk_mask;
- int rc;
+ pgoff_t chunk;
+ pgoff_t max_end;
+ int max_pages; /* max_pages_per_rpc */
+ int chunksize;
+ int ppc_bits; /* pages per chunk bits */
+ int chunk_mask;
+ int rc;
cur = osc_extent_alloc(obj);
if (cur == NULL)
LASSERT(lock->cll_descr.cld_mode >= CLM_WRITE);
LASSERT(cli->cl_chunkbits >= PAGE_CACHE_SHIFT);
- ppc_bits = cli->cl_chunkbits - PAGE_CACHE_SHIFT;
+ ppc_bits = cli->cl_chunkbits - PAGE_CACHE_SHIFT;
chunk_mask = ~((1 << ppc_bits) - 1);
- chunksize = 1 << cli->cl_chunkbits;
- chunk = index >> ppc_bits;
+ chunksize = 1 << cli->cl_chunkbits;
+ chunk = index >> ppc_bits;
/* align end to rpc edge, rpc size may not be a power 2 integer. */
max_pages = cli->cl_max_pages_per_rpc;
/* initialize new extent by parameters so far */
cur->oe_max_end = max_end;
- cur->oe_start = index & chunk_mask;
- cur->oe_end = ((index + ~chunk_mask + 1) & chunk_mask) - 1;
+ cur->oe_start = index & chunk_mask;
+ cur->oe_end = ((index + ~chunk_mask + 1) & chunk_mask) - 1;
if (cur->oe_start < lock->cll_descr.cld_start)
cur->oe_start = lock->cll_descr.cld_start;
if (cur->oe_end > max_end)
cur->oe_end = max_end;
cur->oe_osclock = lock;
- cur->oe_grants = 0;
- cur->oe_mppr = max_pages;
+ cur->oe_grants = 0;
+ cur->oe_mppr = max_pages;
/* grants has been allocated by caller */
LASSERTF(*grants >= chunksize + cli->cl_extent_tax,
ext = first_extent(obj);
while (ext != NULL) {
loff_t ext_chk_start = ext->oe_start >> ppc_bits;
- loff_t ext_chk_end = ext->oe_end >> ppc_bits;
+ loff_t ext_chk_end = ext->oe_end >> ppc_bits;
LASSERT(sanity_check_nolock(ext) == 0);
if (chunk > ext_chk_end + 1)
EASSERT((ext->oe_start & ~chunk_mask) == 0, ext);
/* pull ext's start back to cover cur */
- ext->oe_start = cur->oe_start;
+ ext->oe_start = cur->oe_start;
ext->oe_grants += chunksize;
*grants -= chunksize;
found = osc_extent_hold(ext);
} else if (chunk == ext_chk_end + 1) {
/* rear merge */
- ext->oe_end = cur->oe_end;
+ ext->oe_end = cur->oe_end;
ext->oe_grants += chunksize;
*grants -= chunksize;
int offset = oap->oap_page_off & ~CFS_PAGE_MASK;
int count = oap->oap_count + (offset & (blocksize - 1));
int end = (offset + oap->oap_count) & (blocksize - 1);
+
if (end)
count += blocksize - end;
* @size, then partial truncate happens.
*/
static int osc_extent_truncate(struct osc_extent *ext, pgoff_t trunc_index,
- bool partial)
+ bool partial)
{
- struct cl_env_nest nest;
- struct lu_env *env;
- struct cl_io *io;
- struct osc_object *obj = ext->oe_obj;
- struct client_obd *cli = osc_cli(obj);
+ struct cl_env_nest nest;
+ struct lu_env *env;
+ struct cl_io *io;
+ struct osc_object *obj = ext->oe_obj;
+ struct client_obd *cli = osc_cli(obj);
struct osc_async_page *oap;
struct osc_async_page *tmp;
- int pages_in_chunk = 0;
- int ppc_bits = cli->cl_chunkbits - PAGE_CACHE_SHIFT;
- __u64 trunc_chunk = trunc_index >> ppc_bits;
- int grants = 0;
- int nr_pages = 0;
- int rc = 0;
+ int pages_in_chunk = 0;
+ int ppc_bits = cli->cl_chunkbits - PAGE_CACHE_SHIFT;
+ __u64 trunc_chunk = trunc_index >> ppc_bits;
+ int grants = 0;
+ int nr_pages = 0;
+ int rc = 0;
LASSERT(sanity_check(ext) == 0);
EASSERT(ext->oe_state == OES_TRUNC, ext);
/* discard all pages with index greater then trunc_index */
list_for_each_entry_safe(oap, tmp, &ext->oe_pages,
oap_pending_item) {
- struct cl_page *sub = oap2cl_page(oap);
- struct cl_page *page = cl_page_top(sub);
+ struct cl_page *sub = oap2cl_page(oap);
+ struct cl_page *page = cl_page_top(sub);
LASSERT(list_empty(&oap->oap_rpc_item));
grants = ext->oe_grants;
ext->oe_grants = 0;
} else { /* calculate how many grants we can free */
- int chunks = (ext->oe_end >> ppc_bits) - trunc_chunk;
+ int chunks = (ext->oe_end >> ppc_bits) - trunc_chunk;
pgoff_t last_index;
-
/* if there is no pages in this chunk, we can also free grants
* for the last chunk */
if (pages_in_chunk == 0) {
}
/* this is what we can free from this extent */
- grants = chunks << cli->cl_chunkbits;
+ grants = chunks << cli->cl_chunkbits;
ext->oe_grants -= grants;
- last_index = ((trunc_chunk + 1) << ppc_bits) - 1;
- ext->oe_end = min(last_index, ext->oe_max_end);
+ last_index = ((trunc_chunk + 1) << ppc_bits) - 1;
+ ext->oe_end = min(last_index, ext->oe_max_end);
LASSERT(ext->oe_end >= ext->oe_start);
LASSERT(ext->oe_grants > 0);
}
static int osc_make_ready(const struct lu_env *env, struct osc_async_page *oap,
int cmd)
{
- struct osc_page *opg = oap2osc_page(oap);
- struct cl_page *page = cl_page_top(oap2cl_page(oap));
+ struct osc_page *opg = oap2osc_page(oap);
+ struct cl_page *page = cl_page_top(oap2cl_page(oap));
int result;
LASSERT(cmd == OBD_BRW_WRITE); /* no cached reads */
static int osc_refresh_count(const struct lu_env *env,
struct osc_async_page *oap, int cmd)
{
- struct osc_page *opg = oap2osc_page(oap);
- struct cl_page *page = oap2cl_page(oap);
+ struct osc_page *opg = oap2osc_page(oap);
+ struct cl_page *page = oap2cl_page(oap);
struct cl_object *obj;
- struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+ struct cl_attr *attr = &osc_env_info(env)->oti_attr;
int result;
loff_t kms;
static int osc_completion(const struct lu_env *env, struct osc_async_page *oap,
int cmd, int rc)
{
- struct osc_page *opg = oap2osc_page(oap);
- struct cl_page *page = cl_page_top(oap2cl_page(oap));
- struct osc_object *obj = cl2osc(opg->ops_cl.cpl_obj);
- enum cl_req_type crt;
+ struct osc_page *opg = oap2osc_page(oap);
+ struct cl_page *page = cl_page_top(oap2cl_page(oap));
+ struct osc_object *obj = cl2osc(opg->ops_cl.cpl_obj);
+ enum cl_req_type crt;
int srvlock;
cmd &= ~OBD_BRW_NOQUOTA;
/* statistic */
if (rc == 0 && srvlock) {
- struct lu_device *ld = opg->ops_cl.cpl_obj->co_lu.lo_dev;
+ struct lu_device *ld = opg->ops_cl.cpl_obj->co_lu.lo_dev;
struct osc_stats *stats = &lu2osc_dev(ld)->od_stats;
int bytes = oap->oap_count;
int rc = -EDQUOT;
if (cli->cl_avail_grant >= bytes) {
- cli->cl_avail_grant -= bytes;
+ cli->cl_avail_grant -= bytes;
cli->cl_reserved_grant += bytes;
rc = 0;
}
static int ocw_granted(struct client_obd *cli, struct osc_cache_waiter *ocw)
{
int rc;
+
client_obd_list_lock(&cli->cl_loi_list_lock);
rc = list_empty(&ocw->ocw_entry);
client_obd_list_unlock(&cli->cl_loi_list_lock);
struct osc_async_page *oap, int bytes)
{
struct osc_object *osc = oap->oap_obj;
- struct lov_oinfo *loi = osc->oo_oinfo;
+ struct lov_oinfo *loi = osc->oo_oinfo;
struct osc_cache_waiter ocw;
struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
int rc = -EDQUOT;
static int osc_max_rpc_in_flight(struct client_obd *cli, struct osc_object *osc)
{
int hprpc = !!list_empty(&osc->oo_hp_exts);
+
return rpcs_in_flight(cli) >= cli->cl_max_rpcs_in_flight + hprpc;
}
static void osc_update_pending(struct osc_object *obj, int cmd, int delta)
{
struct client_obd *cli = osc_cli(obj);
+
if (cmd & OBD_BRW_WRITE) {
atomic_add(delta, &obj->oo_nr_writes);
atomic_add(delta, &cli->cl_pending_w_pages);
ar->ar_force_sync = 0;
}
-
/* this must be called holding the loi list lock to give coverage to exit_cache,
* async_flag maintenance, and oap_request */
static void osc_ap_completion(const struct lu_env *env, struct client_obd *cli,
struct osc_async_page *oap, int sent, int rc)
{
struct osc_object *osc = oap->oap_obj;
- struct lov_oinfo *loi = osc->oo_oinfo;
+ struct lov_oinfo *loi = osc->oo_oinfo;
__u64 xid = 0;
if (oap->oap_request != NULL) {
oap2 = list_first_entry(&tmp->oe_pages, struct osc_async_page,
oap_pending_item);
EASSERT(tmp->oe_owner == current, tmp);
-#if 0
- if (overlapped(tmp, ext)) {
- OSC_EXTENT_DUMP(D_ERROR, tmp, "overlapped %p.\n", ext);
- EASSERT(0, ext);
- }
-#endif
if (oap2cl_page(oap)->cp_type != oap2cl_page(oap2)->cp_type) {
CDEBUG(D_CACHE, "Do not permit different type of IO"
" for a same RPC\n");
static int
osc_send_write_rpc(const struct lu_env *env, struct client_obd *cli,
- struct osc_object *osc, pdl_policy_t pol)
+ struct osc_object *osc)
{
LIST_HEAD(rpclist);
struct osc_extent *ext;
if (!list_empty(&rpclist)) {
LASSERT(page_count > 0);
- rc = osc_build_rpc(env, cli, &rpclist, OBD_BRW_WRITE, pol);
+ rc = osc_build_rpc(env, cli, &rpclist, OBD_BRW_WRITE);
LASSERT(list_empty(&rpclist));
}
*/
static int
osc_send_read_rpc(const struct lu_env *env, struct client_obd *cli,
- struct osc_object *osc, pdl_policy_t pol)
+ struct osc_object *osc)
{
struct osc_extent *ext;
struct osc_extent *next;
osc_object_unlock(osc);
LASSERT(page_count > 0);
- rc = osc_build_rpc(env, cli, &rpclist, OBD_BRW_READ, pol);
+ rc = osc_build_rpc(env, cli, &rpclist, OBD_BRW_READ);
LASSERT(list_empty(&rpclist));
osc_object_lock(osc);
#define list_to_obj(list, item) ({ \
struct list_head *__tmp = (list)->next; \
- list_del_init(__tmp); \
+ list_del_init(__tmp); \
list_entry(__tmp, struct osc_object, oo_##item); \
})
}
/* called with the loi list lock held */
-static void osc_check_rpcs(const struct lu_env *env, struct client_obd *cli,
- pdl_policy_t pol)
+static void osc_check_rpcs(const struct lu_env *env, struct client_obd *cli)
{
struct osc_object *osc;
int rc = 0;
* do io on writes while there are cache waiters */
osc_object_lock(osc);
if (osc_makes_rpc(cli, osc, OBD_BRW_WRITE)) {
- rc = osc_send_write_rpc(env, cli, osc, pol);
+ rc = osc_send_write_rpc(env, cli, osc);
if (rc < 0) {
CERROR("Write request failed with %d\n", rc);
}
}
if (osc_makes_rpc(cli, osc, OBD_BRW_READ)) {
- rc = osc_send_read_rpc(env, cli, osc, pol);
+ rc = osc_send_read_rpc(env, cli, osc);
if (rc < 0)
CERROR("Read request failed with %d\n", rc);
}
}
static int osc_io_unplug0(const struct lu_env *env, struct client_obd *cli,
- struct osc_object *osc, pdl_policy_t pol, int async)
+ struct osc_object *osc, int async)
{
int rc = 0;
* potential stack overrun problem. LU-2859 */
atomic_inc(&cli->cl_lru_shrinkers);
client_obd_list_lock(&cli->cl_loi_list_lock);
- osc_check_rpcs(env, cli, pol);
+ osc_check_rpcs(env, cli);
client_obd_list_unlock(&cli->cl_loi_list_lock);
atomic_dec(&cli->cl_lru_shrinkers);
} else {
}
static int osc_io_unplug_async(const struct lu_env *env,
- struct client_obd *cli, struct osc_object *osc)
+ struct client_obd *cli, struct osc_object *osc)
{
- /* XXX: policy is no use actually. */
- return osc_io_unplug0(env, cli, osc, PDL_POLICY_ROUND, 1);
+ return osc_io_unplug0(env, cli, osc, 1);
}
void osc_io_unplug(const struct lu_env *env, struct client_obd *cli,
- struct osc_object *osc, pdl_policy_t pol)
+ struct osc_object *osc)
{
- (void)osc_io_unplug0(env, cli, osc, pol, 0);
+ (void)osc_io_unplug0(env, cli, osc, 0);
}
int osc_prep_async_page(struct osc_object *osc, struct osc_page *ops,
struct page *page, loff_t offset)
{
- struct obd_export *exp = osc_export(osc);
+ struct obd_export *exp = osc_export(osc);
struct osc_async_page *oap = &ops->ops_oap;
if (!page)
struct osc_page *ops)
{
struct osc_io *oio = osc_env_io(env);
- struct osc_extent *ext = NULL;
+ struct osc_extent *ext = NULL;
struct osc_async_page *oap = &ops->ops_oap;
- struct client_obd *cli = oap->oap_cli;
- struct osc_object *osc = oap->oap_obj;
+ struct client_obd *cli = oap->oap_cli;
+ struct osc_object *osc = oap->oap_obj;
pgoff_t index;
- int grants = 0;
- int brw_flags = OBD_BRW_ASYNC;
- int cmd = OBD_BRW_WRITE;
- int need_release = 0;
- int rc = 0;
+ int grants = 0;
+ int brw_flags = OBD_BRW_ASYNC;
+ int cmd = OBD_BRW_WRITE;
+ int need_release = 0;
+ int rc = 0;
if (oap->oap_magic != OAP_MAGIC)
return -EINVAL;
/* check if the file's owner/group is over quota */
if (!(cmd & OBD_BRW_NOQUOTA)) {
struct cl_object *obj;
- struct cl_attr *attr;
+ struct cl_attr *attr;
unsigned int qid[MAXQUOTAS];
obj = cl_object_top(&osc->oo_cl);
struct osc_object *obj, struct osc_page *ops)
{
struct osc_async_page *oap = &ops->ops_oap;
- struct osc_extent *ext = NULL;
+ struct osc_extent *ext = NULL;
int rc = 0;
LASSERT(oap->oap_magic == OAP_MAGIC);
int osc_flush_async_page(const struct lu_env *env, struct cl_io *io,
struct osc_page *ops)
{
- struct osc_extent *ext = NULL;
- struct osc_object *obj = cl2osc(ops->ops_cl.cpl_obj);
- struct cl_page *cp = ops->ops_cl.cpl_page;
- pgoff_t index = cp->cp_index;
+ struct osc_extent *ext = NULL;
+ struct osc_object *obj = cl2osc(ops->ops_cl.cpl_obj);
+ struct cl_page *cp = ops->ops_cl.cpl_page;
+ pgoff_t index = cp->cp_index;
struct osc_async_page *oap = &ops->ops_oap;
bool unplug = false;
int rc = 0;
int osc_cancel_async_page(const struct lu_env *env, struct osc_page *ops)
{
struct osc_async_page *oap = &ops->ops_oap;
- struct osc_object *obj = oap->oap_obj;
- struct client_obd *cli = osc_cli(obj);
- struct osc_extent *ext;
- struct osc_extent *found = NULL;
- struct list_head *plist;
+ struct osc_object *obj = oap->oap_obj;
+ struct client_obd *cli = osc_cli(obj);
+ struct osc_extent *ext;
+ struct osc_extent *found = NULL;
+ struct list_head *plist;
pgoff_t index = oap2cl_page(oap)->cp_index;
- int rc = -EBUSY;
- int cmd;
+ int rc = -EBUSY;
+ int cmd;
LASSERT(!oap->oap_interrupted);
oap->oap_interrupted = 1;
osc_object_lock(obj);
if (oap->oap_cmd & OBD_BRW_WRITE) {
plist = &obj->oo_urgent_exts;
- cmd = OBD_BRW_WRITE;
+ cmd = OBD_BRW_WRITE;
} else {
plist = &obj->oo_reading_exts;
- cmd = OBD_BRW_READ;
+ cmd = OBD_BRW_READ;
}
list_for_each_entry(ext, plist, oe_link) {
if (ext->oe_start <= index && ext->oe_end >= index) {
int osc_queue_sync_pages(const struct lu_env *env, struct osc_object *obj,
struct list_head *list, int cmd, int brw_flags)
{
- struct client_obd *cli = osc_cli(obj);
- struct osc_extent *ext;
+ struct client_obd *cli = osc_cli(obj);
+ struct osc_extent *ext;
struct osc_async_page *oap, *tmp;
- int page_count = 0;
- int mppr = cli->cl_max_pages_per_rpc;
- pgoff_t start = CL_PAGE_EOF;
- pgoff_t end = 0;
+ int page_count = 0;
+ int mppr = cli->cl_max_pages_per_rpc;
+ pgoff_t start = CL_PAGE_EOF;
+ pgoff_t end = 0;
list_for_each_entry(oap, list, oap_pending_item) {
struct cl_page *cp = oap2cl_page(oap);
+
if (cp->cp_index > end)
end = cp->cp_index;
if (cp->cp_index < start)
{
struct osc_extent *ext;
pgoff_t index = start;
- int result = 0;
+ int result = 0;
again:
osc_object_lock(obj);
result += ext->oe_nr_pages;
if (!discard) {
struct list_head *list = NULL;
+
if (hp) {
EASSERT(!ext->oe_hp, ext);
ext->oe_hp = 1;
}
if (unplug)
- osc_io_unplug(env, osc_cli(obj), obj, PDL_POLICY_ROUND);
+ osc_io_unplug(env, osc_cli(obj), obj);
if (hp || discard) {
int rc;
+
rc = osc_cache_wait_range(env, obj, start, end);
if (result >= 0 && rc < 0)
result = rc;
Code Review / kvmfornfv.git / blobdiff