summaryrefslogtreecommitdiffstats
path: root/xlators/performance/io-cache/src/page.c
diff options
context:
space:
mode:
Diffstat (limited to 'xlators/performance/io-cache/src/page.c')
-rw-r--r--xlators/performance/io-cache/src/page.c1057
1 files changed, 569 insertions, 488 deletions
diff --git a/xlators/performance/io-cache/src/page.c b/xlators/performance/io-cache/src/page.c
index 47a8fbb66..728f03736 100644
--- a/xlators/performance/io-cache/src/page.c
+++ b/xlators/performance/io-cache/src/page.c
@@ -38,26 +38,44 @@ ioc_empty (struct ioc_cache *cache)
}
ioc_page_t *
-ioc_page_get (ioc_inode_t *ioc_inode, off_t offset)
+__ioc_page_get (ioc_inode_t *ioc_inode, off_t offset)
{
- ioc_page_t *page = NULL;
- ioc_table_t *table = NULL;
- off_t rounded_offset = 0;
+ ioc_page_t *page = NULL;
+ ioc_table_t *table = NULL;
+ off_t rounded_offset = 0;
table = ioc_inode->table;
rounded_offset = floor (offset, table->page_size);
-
+
page = rbthash_get (ioc_inode->cache.page_table, &rounded_offset,
sizeof (rounded_offset));
if (page != NULL) {
- /* push the page to the end of the lru list */
- list_move_tail (&page->page_lru, &ioc_inode->cache.page_lru);
- }
+ /* push the page to the end of the lru list */
+ list_move_tail (&page->page_lru, &ioc_inode->cache.page_lru);
+ }
- return page;
+ return page;
}
+ioc_page_t *
+ioc_page_get (ioc_inode_t *ioc_inode, off_t offset)
+{
+ ioc_page_t *page = NULL;
+
+ if (ioc_inode == NULL) {
+ goto out;
+ }
+
+ ioc_inode_lock (ioc_inode);
+ {
+ page = __ioc_page_get (ioc_inode, offset);
+ }
+ ioc_inode_unlock (ioc_inode);
+
+out:
+ return page;
+}
/*
* ioc_page_destroy -
@@ -66,40 +84,98 @@ ioc_page_get (ioc_inode_t *ioc_inode, off_t offset)
*
*/
int64_t
-ioc_page_destroy (ioc_page_t *page)
+__ioc_page_destroy (ioc_page_t *page)
{
- int64_t page_size = 0;
+ int64_t page_size = 0;
- page_size = iobref_size (page->iobref);
+ page_size = iobref_size (page->iobref);
- if (page->waitq) {
- /* frames waiting on this page, do not destroy this page */
- page_size = -1;
- } else {
+ if (page->waitq) {
+ /* frames waiting on this page, do not destroy this page */
+ page_size = -1;
+ } else {
rbthash_remove (page->inode->cache.page_table, &page->offset,
sizeof (page->offset));
- list_del (&page->page_lru);
-
- gf_log (page->inode->table->xl->name, GF_LOG_TRACE,
- "destroying page = %p, offset = %"PRId64" "
- "&& inode = %p",
- page, page->offset, page->inode);
-
- if (page->vector){
- iobref_unref (page->iobref);
- GF_FREE (page->vector);
- page->vector = NULL;
- }
-
- page->inode = NULL;
- }
-
- if (page_size != -1) {
- pthread_mutex_destroy (&page->page_lock);
- GF_FREE (page);
- }
-
- return page_size;
+ list_del (&page->page_lru);
+
+ gf_log (page->inode->table->xl->name, GF_LOG_TRACE,
+ "destroying page = %p, offset = %"PRId64" "
+ "&& inode = %p",
+ page, page->offset, page->inode);
+
+ if (page->vector){
+ iobref_unref (page->iobref);
+ GF_FREE (page->vector);
+ page->vector = NULL;
+ }
+
+ page->inode = NULL;
+ }
+
+ if (page_size != -1) {
+ pthread_mutex_destroy (&page->page_lock);
+ GF_FREE (page);
+ }
+
+ return page_size;
+}
+
+
+int64_t
+ioc_page_destroy (ioc_page_t *page)
+{
+ int64_t ret = 0;
+
+ if (page == NULL) {
+ goto out;
+ }
+
+ ioc_inode_lock (page->inode);
+ {
+ ret = __ioc_page_destroy (page);
+ }
+ ioc_inode_unlock (page->inode);
+
+out:
+ return ret;
+}
+
+int32_t
+__ioc_inode_prune (ioc_inode_t *curr, uint64_t *size_pruned,
+ uint64_t size_to_prune, uint32_t index)
+{
+ ioc_page_t *page = NULL, *next = NULL;
+ int32_t ret = 0;
+ ioc_table_t *table = NULL;
+
+ if (curr == NULL) {
+ goto out;
+ }
+
+ table = curr->table;
+
+ list_for_each_entry_safe (page, next, &curr->cache.page_lru, page_lru) {
+ *size_pruned += page->size;
+ ret = __ioc_page_destroy (page);
+
+ if (ret != -1)
+ table->cache_used -= ret;
+
+ gf_log (table->xl->name, GF_LOG_TRACE,
+ "index = %d && table->cache_used = %"PRIu64" && table->"
+ "cache_size = %"PRIu64, index, table->cache_used,
+ table->cache_size);
+
+ if ((*size_pruned) >= size_to_prune)
+ break;
+ }
+
+ if (ioc_empty (&curr->cache)) {
+ list_del_init (&curr->inode_lru);
+ }
+
+out:
+ return 0;
}
/*
@@ -112,69 +188,41 @@ ioc_page_destroy (ioc_page_t *page)
int32_t
ioc_prune (ioc_table_t *table)
{
- ioc_inode_t *curr = NULL, *next_ioc_inode = NULL;
- ioc_page_t *page = NULL, *next = NULL;
- int32_t ret = -1;
- int32_t index = 0;
- uint64_t size_to_prune = 0;
- uint64_t size_pruned = 0;
-
- ioc_table_lock (table);
- {
- size_to_prune = table->cache_used - table->cache_size;
- /* take out the least recently used inode */
- for (index=0; index < table->max_pri; index++) {
- list_for_each_entry_safe (curr, next_ioc_inode,
- &table->inode_lru[index],
- inode_lru) {
- /* prune page-by-page for this inode, till
- * we reach the equilibrium */
- ioc_inode_lock (curr);
- /* { */
-
- list_for_each_entry_safe (page, next,
- &curr->cache.page_lru,
- page_lru) {
- /* done with all pages, and not
- * reached equilibrium yet??
- * continue with next inode in
- * lru_list */
- size_pruned += page->size;
- ret = ioc_page_destroy (page);
-
- if (ret != -1)
- table->cache_used -= ret;
-
- gf_log (table->xl->name,
- GF_LOG_TRACE,
- "index = %d && table->cache_"
- "used = %"PRIu64" && table->"
- "cache_size = %"PRIu64,
- index, table->cache_used,
- table->cache_size);
-
- if (size_pruned >= size_to_prune)
- break;
- } /* list_for_each_entry_safe(page...) */
- if (ioc_empty (&curr->cache)) {
- list_del_init (&curr->inode_lru);
- }
-
- /* } */
- ioc_inode_unlock (curr);
-
- if (size_pruned >= size_to_prune)
- break;
- } /* list_for_each_entry_safe (curr...) */
-
- if (size_pruned >= size_to_prune)
- break;
- } /* for(index=0;...) */
-
- } /* ioc_inode_table locked region end */
- ioc_table_unlock (table);
-
- return 0;
+ ioc_inode_t *curr = NULL, *next_ioc_inode = NULL;
+ int32_t index = 0;
+ uint64_t size_to_prune = 0;
+ uint64_t size_pruned = 0;
+
+ ioc_table_lock (table);
+ {
+ size_to_prune = table->cache_used - table->cache_size;
+ /* take out the least recently used inode */
+ for (index=0; index < table->max_pri; index++) {
+ list_for_each_entry_safe (curr, next_ioc_inode,
+ &table->inode_lru[index],
+ inode_lru) {
+ /* prune page-by-page for this inode, till
+ * we reach the equilibrium */
+ ioc_inode_lock (curr);
+ {
+ __ioc_inode_prune (curr, &size_pruned,
+ size_to_prune,
+ index);
+ }
+ ioc_inode_unlock (curr);
+
+ if (size_pruned >= size_to_prune)
+ break;
+ } /* list_for_each_entry_safe (curr...) */
+
+ if (size_pruned >= size_to_prune)
+ break;
+ } /* for(index=0;...) */
+
+ } /* ioc_inode_table locked region end */
+ ioc_table_unlock (table);
+
+ return 0;
}
/*
@@ -185,12 +233,12 @@ ioc_prune (ioc_table_t *table)
*
*/
ioc_page_t *
-ioc_page_create (ioc_inode_t *ioc_inode, off_t offset)
+__ioc_page_create (ioc_inode_t *ioc_inode, off_t offset)
{
- ioc_table_t *table = NULL;
- ioc_page_t *page = NULL;
- off_t rounded_offset = 0;
- ioc_page_t *newpage = NULL;
+ ioc_table_t *table = NULL;
+ ioc_page_t *page = NULL;
+ off_t rounded_offset = 0;
+ ioc_page_t *newpage = NULL;
table = ioc_inode->table;
rounded_offset = floor (offset, table->page_size);
@@ -201,71 +249,71 @@ ioc_page_create (ioc_inode_t *ioc_inode, off_t offset)
goto out;
}
- if (!ioc_inode) {
+ if (!ioc_inode) {
GF_FREE (newpage);
newpage = NULL;
goto out;
- }
+ }
- newpage->offset = rounded_offset;
- newpage->inode = ioc_inode;
- pthread_mutex_init (&newpage->page_lock, NULL);
+ newpage->offset = rounded_offset;
+ newpage->inode = ioc_inode;
+ pthread_mutex_init (&newpage->page_lock, NULL);
rbthash_insert (ioc_inode->cache.page_table, newpage, &rounded_offset,
sizeof (rounded_offset));
- list_add_tail (&newpage->page_lru, &ioc_inode->cache.page_lru);
+ list_add_tail (&newpage->page_lru, &ioc_inode->cache.page_lru);
- page = newpage;
+ page = newpage;
- gf_log ("io-cache", GF_LOG_TRACE,
- "returning new page %p", page);
+ gf_log ("io-cache", GF_LOG_TRACE,
+ "returning new page %p", page);
out:
- return page;
+ return page;
}
-/*
- * ioc_wait_on_page - pause a frame to wait till the arrival of a page.
- * here we need to handle the case when the frame who calls wait_on_page
- * himself has caused page_fault
+/*
+ * ioc_wait_on_page - pause a frame to wait till the arrival of a page.
+ * here we need to handle the case when the frame who calls wait_on_page
+ * himself has caused page_fault
*
* @page: page to wait on
* @frame: call frame who is waiting on page
*
*/
void
-ioc_wait_on_page (ioc_page_t *page, call_frame_t *frame, off_t offset,
- size_t size)
+__ioc_wait_on_page (ioc_page_t *page, call_frame_t *frame, off_t offset,
+ size_t size)
{
- ioc_waitq_t *waitq = NULL;
- ioc_local_t *local = frame->local;
+ ioc_waitq_t *waitq = NULL;
+ ioc_local_t *local = frame->local;
- waitq = GF_CALLOC (1, sizeof (*waitq), gf_ioc_mt_ioc_waitq_t);
+ waitq = GF_CALLOC (1, sizeof (*waitq), gf_ioc_mt_ioc_waitq_t);
if (waitq == NULL) {
local->op_ret = -1;
local->op_errno = ENOMEM;
gf_log (frame->this->name, GF_LOG_ERROR, "out of memory");
goto out;
- }
-
- gf_log (frame->this->name, GF_LOG_TRACE,
- "frame(%p) waiting on page = %p, offset=%"PRId64", "
- "size=%"GF_PRI_SIZET"",
- frame, page, offset, size);
-
- waitq->data = frame;
- waitq->next = page->waitq;
- waitq->pending_offset = offset;
- waitq->pending_size = size;
- page->waitq = waitq;
- /* one frame can wait only once on a given page,
- * local->wait_count is number of pages a frame is waiting on */
- ioc_local_lock (local);
- {
- local->wait_count++;
- }
- ioc_local_unlock (local);
+ }
+
+ gf_log (frame->this->name, GF_LOG_TRACE,
+ "frame(%p) waiting on page = %p, offset=%"PRId64", "
+ "size=%"GF_PRI_SIZET"",
+ frame, page, offset, size);
+
+ waitq->data = frame;
+ waitq->next = page->waitq;
+ waitq->pending_offset = offset;
+ waitq->pending_size = size;
+ page->waitq = waitq;
+ /* one frame can wait only once on a given page,
+ * local->wait_count is number of pages a frame is waiting on */
+ ioc_local_lock (local);
+ {
+ local->wait_count++;
+ }
+ ioc_local_unlock (local);
out:
return;
@@ -273,7 +321,7 @@ out:
/*
- * ioc_cache_still_valid - see if cached pages ioc_inode are still valid
+ * ioc_cache_still_valid - see if cached pages ioc_inode are still valid
* against given stbuf
*
* @ioc_inode:
@@ -284,62 +332,62 @@ out:
int8_t
ioc_cache_still_valid (ioc_inode_t *ioc_inode, struct iatt *stbuf)
{
- int8_t cache_still_valid = 1;
+ int8_t cache_still_valid = 1;
#if 0
- if (!stbuf || (stbuf->ia_mtime != ioc_inode->cache.mtime) ||
- (stbuf->st_mtim.tv_nsec != ioc_inode->stbuf.st_mtim.tv_nsec))
- cache_still_valid = 0;
+ if (!stbuf || (stbuf->ia_mtime != ioc_inode->cache.mtime) ||
+ (stbuf->st_mtim.tv_nsec != ioc_inode->stbuf.st_mtim.tv_nsec))
+ cache_still_valid = 0;
#else
- if (!stbuf || (stbuf->ia_mtime != ioc_inode->cache.mtime)
+ if (!stbuf || (stbuf->ia_mtime != ioc_inode->cache.mtime)
|| (stbuf->ia_mtime_nsec != ioc_inode->cache.mtime_nsec))
- cache_still_valid = 0;
+ cache_still_valid = 0;
#endif
#if 0
- /* talk with avati@gluster.com to enable this section */
- if (!ioc_inode->mtime && stbuf) {
- cache_still_valid = 1;
- ioc_inode->mtime = stbuf->ia_mtime;
- }
+ /* talk with avati@gluster.com to enable this section */
+ if (!ioc_inode->mtime && stbuf) {
+ cache_still_valid = 1;
+ ioc_inode->mtime = stbuf->ia_mtime;
+ }
#endif
- return cache_still_valid;
+ return cache_still_valid;
}
void
ioc_waitq_return (ioc_waitq_t *waitq)
{
- ioc_waitq_t *trav = NULL;
- ioc_waitq_t *next = NULL;
- call_frame_t *frame = NULL;
+ ioc_waitq_t *trav = NULL;
+ ioc_waitq_t *next = NULL;
+ call_frame_t *frame = NULL;
- for (trav = waitq; trav; trav = next) {
- next = trav->next;
+ for (trav = waitq; trav; trav = next) {
+ next = trav->next;
- frame = trav->data;
- ioc_frame_return (frame);
- GF_FREE (trav);
- }
+ frame = trav->data;
+ ioc_frame_return (frame);
+ GF_FREE (trav);
+ }
}
int
ioc_fault_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, struct iovec *vector,
- int32_t count, struct iatt *stbuf, struct iobref *iobref)
+ int32_t count, struct iatt *stbuf, struct iobref *iobref)
{
- ioc_local_t *local = NULL;
- off_t offset = 0;
- ioc_inode_t *ioc_inode = NULL;
- ioc_table_t *table = NULL;
- ioc_page_t *page = NULL;
- int32_t destroy_size = 0;
- size_t page_size = 0;
- ioc_waitq_t *waitq = NULL;
+ ioc_local_t *local = NULL;
+ off_t offset = 0;
+ ioc_inode_t *ioc_inode = NULL;
+ ioc_table_t *table = NULL;
+ ioc_page_t *page = NULL;
+ int32_t destroy_size = 0;
+ size_t page_size = 0;
+ ioc_waitq_t *waitq = NULL;
size_t iobref_page_size = 0;
char zero_filled = 0;
@@ -351,127 +399,128 @@ ioc_fault_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
zero_filled = ((op_ret >=0)
&& (stbuf->ia_mtime == 0));
- ioc_inode_lock (ioc_inode);
- {
- if (op_ret == -1 ||
- !(zero_filled ||
+ ioc_inode_lock (ioc_inode);
+ {
+ if (op_ret == -1 ||
+ !(zero_filled ||
ioc_cache_still_valid(ioc_inode, stbuf))) {
- gf_log (ioc_inode->table->xl->name, GF_LOG_TRACE,
- "cache for inode(%p) is invalid. flushing "
- "all pages", ioc_inode);
- destroy_size = __ioc_inode_flush (ioc_inode);
- }
-
- if ((op_ret >= 0) && !zero_filled) {
- ioc_inode->cache.mtime = stbuf->ia_mtime;
+ gf_log (ioc_inode->table->xl->name, GF_LOG_TRACE,
+ "cache for inode(%p) is invalid. flushing "
+ "all pages", ioc_inode);
+ destroy_size = __ioc_inode_flush (ioc_inode);
+ }
+
+ if ((op_ret >= 0) && !zero_filled) {
+ ioc_inode->cache.mtime = stbuf->ia_mtime;
ioc_inode->cache.mtime_nsec = stbuf->ia_mtime_nsec;
}
- gettimeofday (&ioc_inode->cache.tv, NULL);
-
- if (op_ret < 0) {
- /* error, readv returned -1 */
- page = ioc_page_get (ioc_inode, offset);
- if (page)
- waitq = ioc_page_error (page, op_ret,
- op_errno);
- } else {
- gf_log (ioc_inode->table->xl->name, GF_LOG_TRACE,
- "op_ret = %d", op_ret);
- page = ioc_page_get (ioc_inode, offset);
- if (!page) {
- /* page was flushed */
- /* some serious bug ? */
- gf_log (this->name, GF_LOG_DEBUG,
- "wasted copy: %"PRId64"[+%"PRId64"] "
- "ioc_inode=%p", offset,
- table->page_size, ioc_inode);
- } else {
- if (page->vector) {
- iobref_unref (page->iobref);
- GF_FREE (page->vector);
- page->vector = NULL;
- }
-
- /* keep a copy of the page for our cache */
- page->vector = iov_dup (vector, count);
+ gettimeofday (&ioc_inode->cache.tv, NULL);
+
+ if (op_ret < 0) {
+ /* error, readv returned -1 */
+ page = __ioc_page_get (ioc_inode, offset);
+ if (page)
+ waitq = __ioc_page_error (page, op_ret,
+ op_errno);
+ } else {
+ gf_log (ioc_inode->table->xl->name, GF_LOG_TRACE,
+ "op_ret = %d", op_ret);
+ page = __ioc_page_get (ioc_inode, offset);
+ if (!page) {
+ /* page was flushed */
+ /* some serious bug ? */
+ gf_log (this->name, GF_LOG_DEBUG,
+ "wasted copy: %"PRId64"[+%"PRId64"] "
+ "ioc_inode=%p", offset,
+ table->page_size, ioc_inode);
+ } else {
+ if (page->vector) {
+ iobref_unref (page->iobref);
+ GF_FREE (page->vector);
+ page->vector = NULL;
+ }
+
+ /* keep a copy of the page for our cache */
+ page->vector = iov_dup (vector, count);
if (page->vector == NULL) {
- page = ioc_page_get (ioc_inode, offset);
+ page = __ioc_page_get (ioc_inode,
+ offset);
if (page != NULL)
- waitq = ioc_page_error (page,
- -1,
- ENOMEM);
+ waitq = __ioc_page_error (page,
+ -1,
+ ENOMEM);
goto unlock;
}
- page->count = count;
- if (iobref) {
- page->iobref = iobref_ref (iobref);
- } else {
- /* TODO: we have got a response to
- * our request and no data */
- gf_log (this->name, GF_LOG_CRITICAL,
- "frame>root>rsp_refs is null");
- } /* if(frame->root->rsp_refs) */
-
- /* page->size should indicate exactly how
- * much the readv call to the child
- * translator returned. earlier op_ret
- * from child translator was used, which
- * gave rise to a bug where reads from
- * io-cached volume were resulting in 0
- * byte replies */
- page_size = iov_length(vector, count);
- page->size = page_size;
+ page->count = count;
+ if (iobref) {
+ page->iobref = iobref_ref (iobref);
+ } else {
+ /* TODO: we have got a response to
+ * our request and no data */
+ gf_log (this->name, GF_LOG_CRITICAL,
+ "frame>root>rsp_refs is null");
+ } /* if(frame->root->rsp_refs) */
+
+ /* page->size should indicate exactly how
+ * much the readv call to the child
+ * translator returned. earlier op_ret
+ * from child translator was used, which
+ * gave rise to a bug where reads from
+ * io-cached volume were resulting in 0
+ * byte replies */
+ page_size = iov_length(vector, count);
+ page->size = page_size;
iobref_page_size = iobref_size (page->iobref);
- if (page->waitq) {
- /* wake up all the frames waiting on
- * this page, including
- * the frame which triggered fault */
- waitq = ioc_page_wakeup (page);
- } /* if(page->waitq) */
- } /* if(!page)...else */
- } /* if(op_ret < 0)...else */
- } /* ioc_inode locked region end */
+ if (page->waitq) {
+ /* wake up all the frames waiting on
+ * this page, including
+ * the frame which triggered fault */
+ waitq = __ioc_page_wakeup (page);
+ } /* if(page->waitq) */
+ } /* if(!page)...else */
+ } /* if(op_ret < 0)...else */
+ } /* ioc_inode locked region end */
unlock:
- ioc_inode_unlock (ioc_inode);
+ ioc_inode_unlock (ioc_inode);
- ioc_waitq_return (waitq);
+ ioc_waitq_return (waitq);
- if (iobref_page_size) {
- ioc_table_lock (table);
- {
- table->cache_used += iobref_page_size;
- }
- ioc_table_unlock (table);
- }
+ if (iobref_page_size) {
+ ioc_table_lock (table);
+ {
+ table->cache_used += iobref_page_size;
+ }
+ ioc_table_unlock (table);
+ }
- if (destroy_size) {
- ioc_table_lock (table);
- {
- table->cache_used -= destroy_size;
- }
- ioc_table_unlock (table);
- }
+ if (destroy_size) {
+ ioc_table_lock (table);
+ {
+ table->cache_used -= destroy_size;
+ }
+ ioc_table_unlock (table);
+ }
- if (ioc_need_prune (ioc_inode->table)) {
- ioc_prune (ioc_inode->table);
- }
+ if (ioc_need_prune (ioc_inode->table)) {
+ ioc_prune (ioc_inode->table);
+ }
- gf_log (this->name, GF_LOG_TRACE, "fault frame %p returned", frame);
- pthread_mutex_destroy (&local->local_lock);
+ gf_log (this->name, GF_LOG_TRACE, "fault frame %p returned", frame);
+ pthread_mutex_destroy (&local->local_lock);
- fd_unref (local->fd);
+ fd_unref (local->fd);
- STACK_DESTROY (frame->root);
- return 0;
+ STACK_DESTROY (frame->root);
+ return 0;
}
/*
* ioc_page_fault -
- *
+ *
* @ioc_inode:
* @frame:
* @fd:
@@ -480,14 +529,14 @@ unlock:
*/
void
ioc_page_fault (ioc_inode_t *ioc_inode, call_frame_t *frame, fd_t *fd,
- off_t offset)
+ off_t offset)
{
- ioc_table_t *table = NULL;
- call_frame_t *fault_frame = NULL;
- ioc_local_t *fault_local = NULL;
- int32_t op_ret = -1, op_errno = -1;
- ioc_waitq_t *waitq = NULL;
- ioc_page_t *page = NULL;
+ ioc_table_t *table = NULL;
+ call_frame_t *fault_frame = NULL;
+ ioc_local_t *fault_local = NULL;
+ int32_t op_ret = -1, op_errno = -1;
+ ioc_waitq_t *waitq = NULL;
+ ioc_page_t *page = NULL;
table = ioc_inode->table;
fault_frame = copy_frame (frame);
@@ -500,7 +549,7 @@ ioc_page_fault (ioc_inode_t *ioc_inode, call_frame_t *frame, fd_t *fd,
}
fault_local = GF_CALLOC (1, sizeof (ioc_local_t),
- gf_ioc_mt_ioc_local_t);
+ gf_ioc_mt_ioc_local_t);
if (fault_local == NULL) {
op_ret = -1;
op_errno = ENOMEM;
@@ -510,92 +559,97 @@ ioc_page_fault (ioc_inode_t *ioc_inode, call_frame_t *frame, fd_t *fd,
goto err;
}
- /* NOTE: copy_frame() means, the frame the fop whose fd_ref we
- * are using till now won't be valid till we get reply from server.
- * we unref this fd, in fault_cbk */
- fault_local->fd = fd_ref (fd);
+ /* NOTE: copy_frame() means, the frame the fop whose fd_ref we
+ * are using till now won't be valid till we get reply from server.
+ * we unref this fd, in fault_cbk */
+ fault_local->fd = fd_ref (fd);
+
+ fault_frame->local = fault_local;
+ pthread_mutex_init (&fault_local->local_lock, NULL);
- fault_frame->local = fault_local;
- pthread_mutex_init (&fault_local->local_lock, NULL);
+ INIT_LIST_HEAD (&fault_local->fill_list);
+ fault_local->pending_offset = offset;
+ fault_local->pending_size = table->page_size;
+ fault_local->inode = ioc_inode;
- INIT_LIST_HEAD (&fault_local->fill_list);
- fault_local->pending_offset = offset;
- fault_local->pending_size = table->page_size;
- fault_local->inode = ioc_inode;
+ gf_log (frame->this->name, GF_LOG_TRACE,
+ "stack winding page fault for offset = %"PRId64" with "
+ "frame %p", offset, fault_frame);
- gf_log (frame->this->name, GF_LOG_TRACE,
- "stack winding page fault for offset = %"PRId64" with "
- "frame %p", offset, fault_frame);
-
- STACK_WIND (fault_frame, ioc_fault_cbk, FIRST_CHILD(fault_frame->this),
- FIRST_CHILD(fault_frame->this)->fops->readv, fd,
+ STACK_WIND (fault_frame, ioc_fault_cbk, FIRST_CHILD(fault_frame->this),
+ FIRST_CHILD(fault_frame->this)->fops->readv, fd,
table->page_size, offset);
- return;
+ return;
err:
- page = ioc_page_get (ioc_inode, offset);
- if (page != NULL) {
- waitq = ioc_page_error (page, op_ret, op_errno);
- if (waitq != NULL) {
- ioc_waitq_return (waitq);
+ ioc_inode_lock (ioc_inode);
+ {
+ page = __ioc_page_get (ioc_inode, offset);
+ if (page != NULL) {
+ waitq = __ioc_page_error (page, op_ret, op_errno);
}
}
+ ioc_inode_unlock (ioc_inode);
+
+ if (waitq != NULL) {
+ ioc_waitq_return (waitq);
+ }
}
int32_t
ioc_frame_fill (ioc_page_t *page, call_frame_t *frame, off_t offset,
size_t size)
{
- ioc_local_t *local = NULL;
- ioc_fill_t *fill = NULL;
- off_t src_offset = 0;
- off_t dst_offset = 0;
- ssize_t copy_size = 0;
- ioc_inode_t *ioc_inode = NULL;
- ioc_fill_t *new = NULL;
- int8_t found = 0;
- int32_t ret = 0;
+ ioc_local_t *local = NULL;
+ ioc_fill_t *fill = NULL;
+ off_t src_offset = 0;
+ off_t dst_offset = 0;
+ ssize_t copy_size = 0;
+ ioc_inode_t *ioc_inode = NULL;
+ ioc_fill_t *new = NULL;
+ int8_t found = 0;
+ int32_t ret = 0;
local = frame->local;
ioc_inode = page->inode;
- gf_log (frame->this->name, GF_LOG_TRACE,
- "frame (%p) offset = %"PRId64" && size = %"GF_PRI_SIZET" "
- "&& page->size = %"GF_PRI_SIZET" && wait_count = %d",
- frame, offset, size, page->size, local->wait_count);
-
- /* immediately move this page to the end of the page_lru list */
- list_move_tail (&page->page_lru, &ioc_inode->cache.page_lru);
- /* fill local->pending_size bytes from local->pending_offset */
- if (local->op_ret != -1 && page->size) {
- if (offset > page->offset)
- /* offset is offset in file, convert it to offset in
- * page */
- src_offset = offset - page->offset;
- /*FIXME: since offset is the offset within page is the
- * else case valid? */
- else
- /* local->pending_offset is in previous page. do not
- * fill until we have filled all previous pages */
- dst_offset = page->offset - offset;
-
- /* we have to copy from offset to either end of this page
- * or till the requested size */
- copy_size = min (page->size - src_offset,
- size - dst_offset);
-
- if (copy_size < 0) {
- /* if page contains fewer bytes and the required offset
- is beyond the page size in the page */
- copy_size = src_offset = 0;
- }
-
- gf_log (page->inode->table->xl->name, GF_LOG_TRACE,
- "copy_size = %"GF_PRI_SIZET" && src_offset = "
- "%"PRId64" && dst_offset = %"PRId64"",
- copy_size, src_offset, dst_offset);
-
- {
+ gf_log (frame->this->name, GF_LOG_TRACE,
+ "frame (%p) offset = %"PRId64" && size = %"GF_PRI_SIZET" "
+ "&& page->size = %"GF_PRI_SIZET" && wait_count = %d",
+ frame, offset, size, page->size, local->wait_count);
+
+ /* immediately move this page to the end of the page_lru list */
+ list_move_tail (&page->page_lru, &ioc_inode->cache.page_lru);
+ /* fill local->pending_size bytes from local->pending_offset */
+ if (local->op_ret != -1 && page->size) {
+ if (offset > page->offset)
+ /* offset is offset in file, convert it to offset in
+ * page */
+ src_offset = offset - page->offset;
+ /*FIXME: since offset is the offset within page is the
+ * else case valid? */
+ else
+ /* local->pending_offset is in previous page. do not
+ * fill until we have filled all previous pages */
+ dst_offset = page->offset - offset;
+
+ /* we have to copy from offset to either end of this page
+ * or till the requested size */
+ copy_size = min (page->size - src_offset,
+ size - dst_offset);
+
+ if (copy_size < 0) {
+ /* if page contains fewer bytes and the required offset
+ is beyond the page size in the page */
+ copy_size = src_offset = 0;
+ }
+
+ gf_log (page->inode->table->xl->name, GF_LOG_TRACE,
+ "copy_size = %"GF_PRI_SIZET" && src_offset = "
+ "%"PRId64" && dst_offset = %"PRId64"",
+ copy_size, src_offset, dst_offset);
+
+ {
new = GF_CALLOC (1, sizeof (*new),
gf_ioc_mt_ioc_fill_t);
if (new == NULL) {
@@ -607,17 +661,17 @@ ioc_frame_fill (ioc_page_t *page, call_frame_t *frame, off_t offset,
goto out;
}
- new->offset = page->offset;
- new->size = copy_size;
- new->iobref = iobref_ref (page->iobref);
- new->count = iov_subset (page->vector,
- page->count,
- src_offset,
- src_offset + copy_size,
- NULL);
-
- new->vector = GF_CALLOC (new->count,
- sizeof (struct iovec),
+ new->offset = page->offset;
+ new->size = copy_size;
+ new->iobref = iobref_ref (page->iobref);
+ new->count = iov_subset (page->vector,
+ page->count,
+ src_offset,
+ src_offset + copy_size,
+ NULL);
+
+ new->vector = GF_CALLOC (new->count,
+ sizeof (struct iovec),
gf_ioc_mt_iovec);
if (new->vector == NULL) {
local->op_ret = -1;
@@ -632,50 +686,50 @@ ioc_frame_fill (ioc_page_t *page, call_frame_t *frame, off_t offset,
goto out;
}
- new->count = iov_subset (page->vector,
- page->count,
- src_offset,
- src_offset + copy_size,
- new->vector);
+ new->count = iov_subset (page->vector,
+ page->count,
+ src_offset,
+ src_offset + copy_size,
+ new->vector);
- /* add the ioc_fill to fill_list for this frame */
- if (list_empty (&local->fill_list)) {
- /* if list is empty, then this is the first
- * time we are filling frame, add the
- * ioc_fill_t to the end of list */
- list_add_tail (&new->list, &local->fill_list);
- } else {
+ /* add the ioc_fill to fill_list for this frame */
+ if (list_empty (&local->fill_list)) {
+ /* if list is empty, then this is the first
+ * time we are filling frame, add the
+ * ioc_fill_t to the end of list */
+ list_add_tail (&new->list, &local->fill_list);
+ } else {
found = 0;
- /* list is not empty, we need to look for
- * where this offset fits in list */
- list_for_each_entry (fill, &local->fill_list,
- list) {
- if (fill->offset > new->offset) {
- found = 1;
- break;
- }
- }
-
- if (found) {
- list_add_tail (&new->list,
- &fill->list);
- } else {
- list_add_tail (&new->list,
- &local->fill_list);
- }
- }
- }
- local->op_ret += copy_size;
- }
+ /* list is not empty, we need to look for
+ * where this offset fits in list */
+ list_for_each_entry (fill, &local->fill_list,
+ list) {
+ if (fill->offset > new->offset) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (found) {
+ list_add_tail (&new->list,
+ &fill->list);
+ } else {
+ list_add_tail (&new->list,
+ &local->fill_list);
+ }
+ }
+ }
+ local->op_ret += copy_size;
+ }
out:
return ret;
}
/*
- * ioc_frame_unwind - frame unwinds only from here
+ * ioc_frame_unwind - frame unwinds only from here
*
* @frame: call frame to unwind
*
@@ -686,43 +740,43 @@ out:
static void
ioc_frame_unwind (call_frame_t *frame)
{
- ioc_local_t *local = NULL;
- ioc_fill_t *fill = NULL, *next = NULL;
- int32_t count = 0;
- struct iovec *vector = NULL;
- int32_t copied = 0;
- struct iobref *iobref = NULL;
- struct iatt stbuf = {0,};
- int32_t op_ret = 0;
+ ioc_local_t *local = NULL;
+ ioc_fill_t *fill = NULL, *next = NULL;
+ int32_t count = 0;
+ struct iovec *vector = NULL;
+ int32_t copied = 0;
+ struct iobref *iobref = NULL;
+ struct iatt stbuf = {0,};
+ int32_t op_ret = 0;
local = frame->local;
- // ioc_local_lock (local);
- frame->local = NULL;
- iobref = iobref_new ();
+ // ioc_local_lock (local);
+ frame->local = NULL;
+ iobref = iobref_new ();
if (iobref == NULL) {
op_ret = -1;
gf_log (frame->this->name, GF_LOG_ERROR, "out of memory");
}
- if (list_empty (&local->fill_list)) {
- gf_log (frame->this->name, GF_LOG_TRACE,
- "frame(%p) has 0 entries in local->fill_list "
- "(offset = %"PRId64" && size = %"GF_PRI_SIZET")",
- frame, local->offset, local->size);
- }
+ if (list_empty (&local->fill_list)) {
+ gf_log (frame->this->name, GF_LOG_TRACE,
+ "frame(%p) has 0 entries in local->fill_list "
+ "(offset = %"PRId64" && size = %"GF_PRI_SIZET")",
+ frame, local->offset, local->size);
+ }
- list_for_each_entry (fill, &local->fill_list, list) {
- count += fill->count;
- }
+ list_for_each_entry (fill, &local->fill_list, list) {
+ count += fill->count;
+ }
- vector = GF_CALLOC (count, sizeof (*vector), gf_ioc_mt_iovec);
+ vector = GF_CALLOC (count, sizeof (*vector), gf_ioc_mt_iovec);
if (vector == NULL) {
op_ret = -1;
gf_log (frame->this->name, GF_LOG_ERROR, "out of memory");
}
- list_for_each_entry_safe (fill, next, &local->fill_list, list) {
+ list_for_each_entry_safe (fill, next, &local->fill_list, list) {
if ((vector != NULL) && (iobref != NULL)) {
memcpy (((char *)vector) + copied,
fill->vector,
@@ -733,22 +787,22 @@ ioc_frame_unwind (call_frame_t *frame)
iobref_merge (iobref, fill->iobref);
}
- list_del (&fill->list);
- iobref_unref (fill->iobref);
- GF_FREE (fill->vector);
- GF_FREE (fill);
- }
+ list_del (&fill->list);
+ iobref_unref (fill->iobref);
+ GF_FREE (fill->vector);
+ GF_FREE (fill);
+ }
if (op_ret != -1) {
op_ret = iov_length (vector, count);
}
- gf_log (frame->this->name, GF_LOG_TRACE,
- "frame(%p) unwinding with op_ret=%d", frame, op_ret);
+ gf_log (frame->this->name, GF_LOG_TRACE,
+ "frame(%p) unwinding with op_ret=%d", frame, op_ret);
- // ioc_local_unlock (local);
+ // ioc_local_unlock (local);
- STACK_UNWIND_STRICT (readv, frame, op_ret, local->op_errno, vector,
+ STACK_UNWIND_STRICT (readv, frame, op_ret, local->op_errno, vector,
count, &stbuf, iobref);
if (iobref != NULL) {
@@ -760,8 +814,8 @@ ioc_frame_unwind (call_frame_t *frame)
vector = NULL;
}
- pthread_mutex_destroy (&local->local_lock);
- GF_FREE (local);
+ pthread_mutex_destroy (&local->local_lock);
+ GF_FREE (local);
return;
}
@@ -775,56 +829,104 @@ ioc_frame_unwind (call_frame_t *frame)
void
ioc_frame_return (call_frame_t *frame)
{
- ioc_local_t *local = NULL;
- int32_t wait_count = 0;
+ ioc_local_t *local = NULL;
+ int32_t wait_count = 0;
local = frame->local;
GF_ASSERT (local->wait_count > 0);
- ioc_local_lock (local);
- {
- wait_count = --local->wait_count;
- }
- ioc_local_unlock (local);
+ ioc_local_lock (local);
+ {
+ wait_count = --local->wait_count;
+ }
+ ioc_local_unlock (local);
- if (!wait_count) {
- ioc_frame_unwind (frame);
- }
+ if (!wait_count) {
+ ioc_frame_unwind (frame);
+ }
- return;
+ return;
}
/*
- * ioc_page_wakeup -
+ * __ioc_page_wakeup -
* @page:
*
* to be called only when a frame is waiting on an in-transit page
*/
ioc_waitq_t *
-ioc_page_wakeup (ioc_page_t *page)
+__ioc_page_wakeup (ioc_page_t *page)
{
- ioc_waitq_t *waitq = NULL, *trav = NULL;
- call_frame_t *frame = NULL;
- int32_t ret = -1;
+ ioc_waitq_t *waitq = NULL, *trav = NULL;
+ call_frame_t *frame = NULL;
+ int32_t ret = -1;
- waitq = page->waitq;
- page->waitq = NULL;
+ waitq = page->waitq;
+ page->waitq = NULL;
- page->ready = 1;
+ page->ready = 1;
- gf_log (page->inode->table->xl->name, GF_LOG_TRACE,
- "page is %p && waitq = %p", page, waitq);
+ gf_log (page->inode->table->xl->name, GF_LOG_TRACE,
+ "page is %p && waitq = %p", page, waitq);
- for (trav = waitq; trav; trav = trav->next) {
- frame = trav->data;
- ret = ioc_frame_fill (page, frame, trav->pending_offset,
+ for (trav = waitq; trav; trav = trav->next) {
+ frame = trav->data;
+ ret = ioc_frame_fill (page, frame, trav->pending_offset,
trav->pending_size);
if (ret == -1) {
break;
}
- }
-
- return waitq;
+ }
+
+ return waitq;
+}
+
+
+/*
+ * ioc_page_error -
+ * @page:
+ * @op_ret:
+ * @op_errno:
+ *
+ */
+ioc_waitq_t *
+__ioc_page_error (ioc_page_t *page, int32_t op_ret, int32_t op_errno)
+{
+ ioc_waitq_t *waitq = NULL, *trav = NULL;
+ call_frame_t *frame = NULL;
+ int64_t ret = 0;
+ ioc_table_t *table = NULL;
+ ioc_local_t *local = NULL;
+
+ waitq = page->waitq;
+ page->waitq = NULL;
+
+ gf_log (page->inode->table->xl->name, GF_LOG_DEBUG,
+ "page error for page = %p & waitq = %p", page, waitq);
+
+ for (trav = waitq; trav; trav = trav->next) {
+
+ frame = trav->data;
+
+ local = frame->local;
+ ioc_local_lock (local);
+ {
+ if (local->op_ret != -1) {
+ local->op_ret = op_ret;
+ local->op_errno = op_errno;
+ }
+ }
+ ioc_local_unlock (local);
+ }
+
+ table = page->inode->table;
+ ret = ioc_page_destroy (page);
+
+ if (ret != -1) {
+ table->cache_used -= ret;
+ }
+
+ return waitq;
}
@@ -838,39 +940,18 @@ ioc_page_wakeup (ioc_page_t *page)
ioc_waitq_t *
ioc_page_error (ioc_page_t *page, int32_t op_ret, int32_t op_errno)
{
- ioc_waitq_t *waitq = NULL, *trav = NULL;
- call_frame_t *frame = NULL;
- int64_t ret = 0;
- ioc_table_t *table = NULL;
- ioc_local_t *local = NULL;
-
- waitq = page->waitq;
- page->waitq = NULL;
-
- gf_log (page->inode->table->xl->name, GF_LOG_DEBUG,
- "page error for page = %p & waitq = %p", page, waitq);
-
- for (trav = waitq; trav; trav = trav->next) {
-
- frame = trav->data;
-
- local = frame->local;
- ioc_local_lock (local);
- {
- if (local->op_ret != -1) {
- local->op_ret = op_ret;
- local->op_errno = op_errno;
- }
- }
- ioc_local_unlock (local);
- }
-
- table = page->inode->table;
- ret = ioc_page_destroy (page);
-
- if (ret != -1) {
- table->cache_used -= ret;
- }
-
- return waitq;
+ ioc_waitq_t *waitq = NULL;
+
+ if (page == NULL) {
+ goto out;
+ }
+
+ ioc_inode_lock (page->inode);
+ {
+ waitq = __ioc_page_error (page, op_ret, op_errno);
+ }
+ ioc_inode_unlock (page->inode);
+
+out:
+ return waitq;
}
generated by cgit (git 2.34.1) at 2025-11-04 08:47:42 +0000