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-rw-r--r--xlators/performance/read-ahead/src/read-ahead.c1103
1 files changed, 558 insertions, 545 deletions
diff --git a/xlators/performance/read-ahead/src/read-ahead.c b/xlators/performance/read-ahead/src/read-ahead.c
index f16e59c4237..8317be4a7d3 100644
--- a/xlators/performance/read-ahead/src/read-ahead.c
+++ b/xlators/performance/read-ahead/src/read-ahead.c
@@ -17,11 +17,11 @@
<http://www.gnu.org/licenses/>.
*/
-/*
- TODO:
- - handle O_DIRECT
- - maintain offset, flush on lseek
- - ensure efficient memory managment in case of random seek
+/*
+ TODO:
+ - handle O_DIRECT
+ - maintain offset, flush on lseek
+ - ensure efficient memory managment in case of random seek
*/
#ifndef _CONFIG_H
@@ -46,75 +46,75 @@ int
ra_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, fd_t *fd)
{
- ra_conf_t *conf = NULL;
- ra_file_t *file = NULL;
- int ret = 0;
+ ra_conf_t *conf = NULL;
+ ra_file_t *file = NULL;
+ int ret = 0;
long wbflags = 0;
- conf = this->private;
+ conf = this->private;
- if (op_ret == -1) {
- goto unwind;
- }
+ if (op_ret == -1) {
+ goto unwind;
+ }
wbflags = (long)frame->local;
- file = GF_CALLOC (1, sizeof (*file), gf_ra_mt_ra_file_t);
- if (!file) {
+ file = GF_CALLOC (1, sizeof (*file), gf_ra_mt_ra_file_t);
+ if (!file) {
op_ret = -1;
op_errno = ENOMEM;
- gf_log (this->name, GF_LOG_ERROR,
- "out of memory");
- goto unwind;
- }
+ gf_log (this->name, GF_LOG_ERROR,
+ "out of memory");
+ goto unwind;
+ }
- /* If O_DIRECT open, we disable caching on it */
+ /* If O_DIRECT open, we disable caching on it */
- if ((fd->flags & O_DIRECT) || ((fd->flags & O_ACCMODE) == O_WRONLY))
- file->disabled = 1;
+ if ((fd->flags & O_DIRECT) || ((fd->flags & O_ACCMODE) == O_WRONLY))
+ file->disabled = 1;
if (wbflags & GF_OPEN_NOWB) {
file->disabled = 1;
}
- file->offset = (unsigned long long) 0;
- file->conf = conf;
- file->pages.next = &file->pages;
- file->pages.prev = &file->pages;
- file->pages.offset = (unsigned long long) 0;
- file->pages.file = file;
-
- ra_conf_lock (conf);
- {
- file->next = conf->files.next;
- conf->files.next = file;
- file->next->prev = file;
- file->prev = &conf->files;
- }
- ra_conf_unlock (conf);
-
- file->fd = fd;
- file->page_count = conf->page_count;
- file->page_size = conf->page_size;
- pthread_mutex_init (&file->file_lock, NULL);
-
- if (!file->disabled) {
- file->page_count = 1;
- }
-
- ret = fd_ctx_set (fd, this, (uint64_t)(long)file);
+ file->offset = (unsigned long long) 0;
+ file->conf = conf;
+ file->pages.next = &file->pages;
+ file->pages.prev = &file->pages;
+ file->pages.offset = (unsigned long long) 0;
+ file->pages.file = file;
+
+ ra_conf_lock (conf);
+ {
+ file->next = conf->files.next;
+ conf->files.next = file;
+ file->next->prev = file;
+ file->prev = &conf->files;
+ }
+ ra_conf_unlock (conf);
+
+ file->fd = fd;
+ file->page_count = conf->page_count;
+ file->page_size = conf->page_size;
+ pthread_mutex_init (&file->file_lock, NULL);
+
+ if (!file->disabled) {
+ file->page_count = 1;
+ }
+
+ ret = fd_ctx_set (fd, this, (uint64_t)(long)file);
if (ret == -1) {
ra_file_destroy (file);
op_ret = -1;
op_errno = ENOMEM;
}
-
+
unwind:
frame->local = NULL;
- STACK_UNWIND_STRICT (open, frame, op_ret, op_errno, fd);
+ STACK_UNWIND_STRICT (open, frame, op_ret, op_errno, fd);
- return 0;
+ return 0;
}
@@ -124,53 +124,53 @@ ra_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
struct iatt *buf, struct iatt *preparent,
struct iatt *postparent)
{
- ra_conf_t *conf = NULL;
- ra_file_t *file = NULL;
- int ret = 0;
+ ra_conf_t *conf = NULL;
+ ra_file_t *file = NULL;
+ int ret = 0;
- conf = this->private;
+ conf = this->private;
- if (op_ret == -1) {
- goto unwind;
- }
+ if (op_ret == -1) {
+ goto unwind;
+ }
- file = GF_CALLOC (1, sizeof (*file), gf_ra_mt_ra_file_t);
- if (!file) {
+ file = GF_CALLOC (1, sizeof (*file), gf_ra_mt_ra_file_t);
+ if (!file) {
op_ret = -1;
op_errno = ENOMEM;
- gf_log (this->name, GF_LOG_ERROR,
- "out of memory");
- goto unwind;
- }
-
- /* If O_DIRECT open, we disable caching on it */
-
- if ((fd->flags & O_DIRECT) || ((fd->flags & O_ACCMODE) == O_WRONLY))
- file->disabled = 1;
-
- file->offset = (unsigned long long) 0;
- //file->size = fd->inode->buf.ia_size;
- file->conf = conf;
- file->pages.next = &file->pages;
- file->pages.prev = &file->pages;
- file->pages.offset = (unsigned long long) 0;
- file->pages.file = file;
-
- ra_conf_lock (conf);
- {
- file->next = conf->files.next;
- conf->files.next = file;
- file->next->prev = file;
- file->prev = &conf->files;
- }
- ra_conf_unlock (conf);
-
- file->fd = fd;
- file->page_count = conf->page_count;
- file->page_size = conf->page_size;
- pthread_mutex_init (&file->file_lock, NULL);
-
- ret = fd_ctx_set (fd, this, (uint64_t)(long)file);
+ gf_log (this->name, GF_LOG_ERROR,
+ "out of memory");
+ goto unwind;
+ }
+
+ /* If O_DIRECT open, we disable caching on it */
+
+ if ((fd->flags & O_DIRECT) || ((fd->flags & O_ACCMODE) == O_WRONLY))
+ file->disabled = 1;
+
+ file->offset = (unsigned long long) 0;
+ //file->size = fd->inode->buf.ia_size;
+ file->conf = conf;
+ file->pages.next = &file->pages;
+ file->pages.prev = &file->pages;
+ file->pages.offset = (unsigned long long) 0;
+ file->pages.file = file;
+
+ ra_conf_lock (conf);
+ {
+ file->next = conf->files.next;
+ conf->files.next = file;
+ file->next->prev = file;
+ file->prev = &conf->files;
+ }
+ ra_conf_unlock (conf);
+
+ file->fd = fd;
+ file->page_count = conf->page_count;
+ file->page_size = conf->page_size;
+ pthread_mutex_init (&file->file_lock, NULL);
+
+ ret = fd_ctx_set (fd, this, (uint64_t)(long)file);
if (ret == -1) {
ra_file_destroy (file);
op_ret = -1;
@@ -178,10 +178,10 @@ ra_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
}
unwind:
- STACK_UNWIND_STRICT (create, frame, op_ret, op_errno, fd, inode, buf,
+ STACK_UNWIND_STRICT (create, frame, op_ret, op_errno, fd, inode, buf,
preparent, postparent);
- return 0;
+ return 0;
}
@@ -191,24 +191,25 @@ ra_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
{
frame->local = (void *)(long)wbflags;
- STACK_WIND (frame, ra_open_cbk,
- FIRST_CHILD (this),
- FIRST_CHILD (this)->fops->open,
- loc, flags, fd, wbflags);
+ STACK_WIND (frame, ra_open_cbk,
+ FIRST_CHILD (this),
+ FIRST_CHILD (this)->fops->open,
+ loc, flags, fd, wbflags);
- return 0;
+ return 0;
}
+
int
ra_create (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
mode_t mode, fd_t *fd, dict_t *params)
{
- STACK_WIND (frame, ra_create_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->create,
- loc, flags, mode, fd, params);
+ STACK_WIND (frame, ra_create_cbk,
+ FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->create,
+ loc, flags, mode, fd, params);
- return 0;
+ return 0;
}
/* free cache pages between offset and offset+size,
@@ -218,109 +219,110 @@ ra_create (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
static void
flush_region (call_frame_t *frame, ra_file_t *file, off_t offset, off_t size)
{
- ra_page_t *trav = NULL;
- ra_page_t *next = NULL;
-
- ra_file_lock (file);
- {
- trav = file->pages.next;
- while (trav != &file->pages
- && trav->offset < (offset + size)) {
-
- next = trav->next;
- if (trav->offset >= offset && !trav->waitq) {
- ra_page_purge (trav);
- }
- trav = next;
- }
- }
- ra_file_unlock (file);
+ ra_page_t *trav = NULL;
+ ra_page_t *next = NULL;
+
+ ra_file_lock (file);
+ {
+ trav = file->pages.next;
+ while (trav != &file->pages
+ && trav->offset < (offset + size)) {
+
+ next = trav->next;
+ if (trav->offset >= offset && !trav->waitq) {
+ ra_page_purge (trav);
+ }
+ trav = next;
+ }
+ }
+ ra_file_unlock (file);
}
int
ra_release (xlator_t *this, fd_t *fd)
{
- uint64_t tmp_file = 0;
- int ret = 0;
+ uint64_t tmp_file = 0;
+ int ret = 0;
- ret = fd_ctx_del (fd, this, &tmp_file);
-
- if (!ret) {
- ra_file_destroy ((ra_file_t *)(long)tmp_file);
- }
+ ret = fd_ctx_del (fd, this, &tmp_file);
- return 0;
+ if (!ret) {
+ ra_file_destroy ((ra_file_t *)(long)tmp_file);
+ }
+
+ return 0;
}
void
read_ahead (call_frame_t *frame, ra_file_t *file)
{
- off_t ra_offset = 0;
- size_t ra_size = 0;
- off_t trav_offset = 0;
- ra_page_t *trav = NULL;
- off_t cap = 0;
- char fault = 0;
-
- if (!file->page_count)
- return;
-
- ra_size = file->page_size * file->page_count;
- ra_offset = floor (file->offset, file->page_size);
- cap = file->size ? file->size : file->offset + ra_size;
-
- while (ra_offset < min (file->offset + ra_size, cap)) {
-
- ra_file_lock (file);
- {
- trav = ra_page_get (file, ra_offset);
- }
- ra_file_unlock (file);
-
- if (!trav)
- break;
-
- ra_offset += file->page_size;
- }
-
- if (trav)
- /* comfortable enough */
- return;
-
- trav_offset = ra_offset;
-
- cap = file->size ? file->size : ra_offset + ra_size;
-
- while (trav_offset < min(ra_offset + ra_size, cap)) {
- fault = 0;
- ra_file_lock (file);
- {
- trav = ra_page_get (file, trav_offset);
- if (!trav) {
- fault = 1;
- trav = ra_page_create (file, trav_offset);
- if (trav)
- trav->dirty = 1;
- }
- }
- ra_file_unlock (file);
-
- if (!trav) {
- /* OUT OF MEMORY */
- break;
- }
-
- if (fault) {
- gf_log (frame->this->name, GF_LOG_TRACE,
- "RA at offset=%"PRId64, trav_offset);
- ra_page_fault (file, frame, trav_offset);
- }
- trav_offset += file->page_size;
- }
-
- return;
+ off_t ra_offset = 0;
+ size_t ra_size = 0;
+ off_t trav_offset = 0;
+ ra_page_t *trav = NULL;
+ off_t cap = 0;
+ char fault = 0;
+
+ if (!file->page_count)
+ return;
+
+ ra_size = file->page_size * file->page_count;
+ ra_offset = floor (file->offset, file->page_size);
+ cap = file->size ? file->size : file->offset + ra_size;
+
+ while (ra_offset < min (file->offset + ra_size, cap)) {
+
+ ra_file_lock (file);
+ {
+ trav = ra_page_get (file, ra_offset);
+ }
+ ra_file_unlock (file);
+
+ if (!trav)
+ break;
+
+ ra_offset += file->page_size;
+ }
+
+ if (trav) {
+ /* comfortable enough */
+ return;
+ }
+
+ trav_offset = ra_offset;
+
+ cap = file->size ? file->size : ra_offset + ra_size;
+
+ while (trav_offset < min(ra_offset + ra_size, cap)) {
+ fault = 0;
+ ra_file_lock (file);
+ {
+ trav = ra_page_get (file, trav_offset);
+ if (!trav) {
+ fault = 1;
+ trav = ra_page_create (file, trav_offset);
+ if (trav)
+ trav->dirty = 1;
+ }
+ }
+ ra_file_unlock (file);
+
+ if (!trav) {
+ /* OUT OF MEMORY */
+ break;
+ }
+
+ if (fault) {
+ gf_log (frame->this->name, GF_LOG_TRACE,
+ "RA at offset=%"PRId64, trav_offset);
+ ra_page_fault (file, frame, trav_offset);
+ }
+ trav_offset += file->page_size;
+ }
+
+ return;
}
@@ -329,92 +331,92 @@ ra_need_atime_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)
{
- STACK_DESTROY (frame->root);
- return 0;
+ STACK_DESTROY (frame->root);
+ return 0;
}
static void
dispatch_requests (call_frame_t *frame, ra_file_t *file)
{
- ra_local_t *local = NULL;
- ra_conf_t *conf = NULL;
- off_t rounded_offset = 0;
- off_t rounded_end = 0;
- off_t trav_offset = 0;
- ra_page_t *trav = NULL;
- call_frame_t *ra_frame = NULL;
- char need_atime_update = 1;
- char fault = 0;
-
- local = frame->local;
- conf = file->conf;
-
- rounded_offset = floor (local->offset, file->page_size);
- rounded_end = roof (local->offset + local->size, file->page_size);
-
- trav_offset = rounded_offset;
-
- while (trav_offset < rounded_end) {
- fault = 0;
-
- ra_file_lock (file);
- {
- trav = ra_page_get (file, trav_offset);
- if (!trav) {
- trav = ra_page_create (file, trav_offset);
- fault = 1;
- need_atime_update = 0;
- }
-
- if (!trav) {
+ ra_local_t *local = NULL;
+ ra_conf_t *conf = NULL;
+ off_t rounded_offset = 0;
+ off_t rounded_end = 0;
+ off_t trav_offset = 0;
+ ra_page_t *trav = NULL;
+ call_frame_t *ra_frame = NULL;
+ char need_atime_update = 1;
+ char fault = 0;
+
+ local = frame->local;
+ conf = file->conf;
+
+ rounded_offset = floor (local->offset, file->page_size);
+ rounded_end = roof (local->offset + local->size, file->page_size);
+
+ trav_offset = rounded_offset;
+
+ while (trav_offset < rounded_end) {
+ fault = 0;
+
+ ra_file_lock (file);
+ {
+ trav = ra_page_get (file, trav_offset);
+ if (!trav) {
+ trav = ra_page_create (file, trav_offset);
+ fault = 1;
+ need_atime_update = 0;
+ }
+
+ if (!trav) {
local->op_ret = -1;
local->op_errno = ENOMEM;
- goto unlock;
+ goto unlock;
+ }
+
+ if (trav->ready) {
+ gf_log (frame->this->name, GF_LOG_TRACE,
+ "HIT at offset=%"PRId64".",
+ trav_offset);
+ ra_frame_fill (trav, frame);
+ } else {
+ gf_log (frame->this->name, GF_LOG_TRACE,
+ "IN-TRANSIT at offset=%"PRId64".",
+ trav_offset);
+ ra_wait_on_page (trav, frame);
+ need_atime_update = 0;
}
+ }
+ unlock:
+ ra_file_unlock (file);
+
+ if (fault) {
+ gf_log (frame->this->name, GF_LOG_TRACE,
+ "MISS at offset=%"PRId64".",
+ trav_offset);
+ ra_page_fault (file, frame, trav_offset);
+ }
+
+ trav_offset += file->page_size;
+ }
- if (trav->ready) {
- gf_log (frame->this->name, GF_LOG_TRACE,
- "HIT at offset=%"PRId64".",
- trav_offset);
- ra_frame_fill (trav, frame);
- } else {
- gf_log (frame->this->name, GF_LOG_TRACE,
- "IN-TRANSIT at offset=%"PRId64".",
- trav_offset);
- ra_wait_on_page (trav, frame);
- need_atime_update = 0;
- }
- }
- unlock:
- ra_file_unlock (file);
-
- if (fault) {
- gf_log (frame->this->name, GF_LOG_TRACE,
- "MISS at offset=%"PRId64".",
- trav_offset);
- ra_page_fault (file, frame, trav_offset);
- }
-
- trav_offset += file->page_size;
- }
-
- if (need_atime_update && conf->force_atime_update) {
- /* TODO: use untimens() since readv() can confuse underlying
- io-cache and others */
- ra_frame = copy_frame (frame);
+ if (need_atime_update && conf->force_atime_update) {
+ /* TODO: use untimens() since readv() can confuse underlying
+ io-cache and others */
+ ra_frame = copy_frame (frame);
if (ra_frame == NULL) {
goto out;
}
- STACK_WIND (ra_frame, ra_need_atime_cbk,
- FIRST_CHILD (frame->this),
- FIRST_CHILD (frame->this)->fops->readv,
- file->fd, 1, 1);
- }
+ STACK_WIND (ra_frame, ra_need_atime_cbk,
+ FIRST_CHILD (frame->this),
+ FIRST_CHILD (frame->this)->fops->readv,
+ file->fd, 1, 1);
+ }
out:
- return ;
+ return ;
}
@@ -423,10 +425,10 @@ ra_readv_disabled_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)
{
- STACK_UNWIND_STRICT (readv, frame, op_ret, op_errno, vector, count,
+ STACK_UNWIND_STRICT (readv, frame, op_ret, op_errno, vector, count,
stbuf, iobref);
- return 0;
+ return 0;
}
@@ -434,21 +436,21 @@ int
ra_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
off_t offset)
{
- ra_file_t *file = NULL;
- ra_local_t *local = NULL;
- ra_conf_t *conf = NULL;
- int op_errno = 0;
- char expected_offset = 1;
- uint64_t tmp_file = 0;
+ ra_file_t *file = NULL;
+ ra_local_t *local = NULL;
+ ra_conf_t *conf = NULL;
+ int op_errno = 0;
+ char expected_offset = 1;
+ uint64_t tmp_file = 0;
- conf = this->private;
+ conf = this->private;
- gf_log (this->name, GF_LOG_TRACE,
- "NEW REQ at offset=%"PRId64" for size=%"GF_PRI_SIZET"",
- offset, size);
+ gf_log (this->name, GF_LOG_TRACE,
+ "NEW REQ at offset=%"PRId64" for size=%"GF_PRI_SIZET"",
+ offset, size);
- fd_ctx_get (fd, this, &tmp_file);
- file = (ra_file_t *)(long)tmp_file;
+ fd_ctx_get (fd, this, &tmp_file);
+ file = (ra_file_t *)(long)tmp_file;
if (file == NULL) {
op_errno = EBADF;
@@ -457,73 +459,74 @@ ra_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
goto unwind;
}
- if (file->offset != offset) {
- gf_log (this->name, GF_LOG_DEBUG,
- "unexpected offset (%"PRId64" != %"PRId64") resetting",
- file->offset, offset);
-
- expected_offset = file->expected = file->page_count = 0;
- } else {
- gf_log (this->name, GF_LOG_TRACE,
- "expected offset (%"PRId64") when page_count=%d",
- offset, file->page_count);
-
- if (file->expected < (conf->page_size * conf->page_count)) {
- file->expected += size;
- file->page_count = min ((file->expected / file->page_size),
- conf->page_count);
- }
- }
-
- if (!expected_offset) {
- flush_region (frame, file, 0, file->pages.prev->offset + 1);
- }
-
- if (file->disabled) {
- STACK_WIND (frame, ra_readv_disabled_cbk,
- FIRST_CHILD (frame->this),
- FIRST_CHILD (frame->this)->fops->readv,
- file->fd, size, offset);
- return 0;
- }
-
- local = (void *) GF_CALLOC (1, sizeof (*local),
+ if (file->offset != offset) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "unexpected offset (%"PRId64" != %"PRId64") resetting",
+ file->offset, offset);
+
+ expected_offset = file->expected = file->page_count = 0;
+ } else {
+ gf_log (this->name, GF_LOG_TRACE,
+ "expected offset (%"PRId64") when page_count=%d",
+ offset, file->page_count);
+
+ if (file->expected < (conf->page_size * conf->page_count)) {
+ file->expected += size;
+ file->page_count = min ((file->expected
+ / file->page_size),
+ conf->page_count);
+ }
+ }
+
+ if (!expected_offset) {
+ flush_region (frame, file, 0, file->pages.prev->offset + 1);
+ }
+
+ if (file->disabled) {
+ STACK_WIND (frame, ra_readv_disabled_cbk,
+ FIRST_CHILD (frame->this),
+ FIRST_CHILD (frame->this)->fops->readv,
+ file->fd, size, offset);
+ return 0;
+ }
+
+ local = (void *) GF_CALLOC (1, sizeof (*local),
gf_ra_mt_ra_local_t);
- if (!local) {
- gf_log (this->name, GF_LOG_ERROR,
- "out of memory");
- op_errno = ENOMEM;
- goto unwind;
- }
+ if (!local) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "out of memory");
+ op_errno = ENOMEM;
+ goto unwind;
+ }
- local->fd = fd;
- local->offset = offset;
- local->size = size;
- local->wait_count = 1;
+ local->fd = fd;
+ local->offset = offset;
+ local->size = size;
+ local->wait_count = 1;
- local->fill.next = &local->fill;
- local->fill.prev = &local->fill;
+ local->fill.next = &local->fill;
+ local->fill.prev = &local->fill;
- pthread_mutex_init (&local->local_lock, NULL);
+ pthread_mutex_init (&local->local_lock, NULL);
- frame->local = local;
+ frame->local = local;
- dispatch_requests (frame, file);
+ dispatch_requests (frame, file);
- flush_region (frame, file, 0, floor (offset, file->page_size));
+ flush_region (frame, file, 0, floor (offset, file->page_size));
read_ahead (frame, file);
- ra_frame_return (frame);
+ ra_frame_return (frame);
- file->offset = offset + size;
+ file->offset = offset + size;
- return 0;
+ return 0;
unwind:
- STACK_UNWIND_STRICT (readv, frame, -1, op_errno, NULL, 0, NULL, NULL);
+ STACK_UNWIND_STRICT (readv, frame, -1, op_errno, NULL, 0, NULL, NULL);
- return 0;
+ return 0;
}
@@ -531,8 +534,8 @@ int
ra_flush_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
int32_t op_errno)
{
- STACK_UNWIND_STRICT (flush, frame, op_ret, op_errno);
- return 0;
+ STACK_UNWIND_STRICT (flush, frame, op_ret, op_errno);
+ return 0;
}
@@ -541,20 +544,21 @@ int
ra_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
int32_t op_errno, struct iatt *prebuf, struct iatt *postbuf)
{
- STACK_UNWIND_STRICT (fsync, frame, op_ret, op_errno, prebuf, postbuf);
- return 0;
+ STACK_UNWIND_STRICT (fsync, frame, op_ret, op_errno, prebuf, postbuf);
+ return 0;
}
int
ra_flush (call_frame_t *frame, xlator_t *this, fd_t *fd)
{
- ra_file_t *file = NULL;
- uint64_t tmp_file = 0;
- int32_t op_errno = 0;
+ ra_file_t *file = NULL;
+ uint64_t tmp_file = 0;
+ int32_t op_errno = 0;
+
+ fd_ctx_get (fd, this, &tmp_file);
- fd_ctx_get (fd, this, &tmp_file);
- file = (ra_file_t *)(long)tmp_file;
+ file = (ra_file_t *)(long)tmp_file;
if (file == NULL) {
op_errno = EBADF;
gf_log (this->name, GF_LOG_DEBUG, "flush received on fd with no"
@@ -564,14 +568,14 @@ ra_flush (call_frame_t *frame, xlator_t *this, fd_t *fd)
flush_region (frame, file, 0, file->pages.prev->offset+1);
- STACK_WIND (frame, ra_flush_cbk,
- FIRST_CHILD (this),
- FIRST_CHILD (this)->fops->flush,
- fd);
- return 0;
+ STACK_WIND (frame, ra_flush_cbk,
+ FIRST_CHILD (this),
+ FIRST_CHILD (this)->fops->flush,
+ fd);
+ return 0;
unwind:
- STACK_UNWIND_STRICT (flush, frame, -1, op_errno);
+ STACK_UNWIND_STRICT (flush, frame, -1, op_errno);
return 0;
}
@@ -579,12 +583,13 @@ unwind:
int
ra_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t datasync)
{
- ra_file_t *file = NULL;
- uint64_t tmp_file = 0;
- int32_t op_errno = 0;
+ ra_file_t *file = NULL;
+ uint64_t tmp_file = 0;
+ int32_t op_errno = 0;
- fd_ctx_get (fd, this, &tmp_file);
- file = (ra_file_t *)(long)tmp_file;
+ fd_ctx_get (fd, this, &tmp_file);
+
+ file = (ra_file_t *)(long)tmp_file;
if (file == NULL) {
op_errno = EBADF;
gf_log (this->name, GF_LOG_DEBUG, "fsync received on fd with no"
@@ -592,18 +597,18 @@ ra_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t datasync)
goto unwind;
}
- if (file) {
- flush_region (frame, file, 0, file->pages.prev->offset+1);
- }
+ if (file) {
+ flush_region (frame, file, 0, file->pages.prev->offset+1);
+ }
- STACK_WIND (frame, ra_fsync_cbk,
- FIRST_CHILD (this),
- FIRST_CHILD (this)->fops->fsync,
- fd, datasync);
- return 0;
+ STACK_WIND (frame, ra_fsync_cbk,
+ FIRST_CHILD (this),
+ FIRST_CHILD (this)->fops->fsync,
+ fd, datasync);
+ return 0;
unwind:
- STACK_UNWIND_STRICT (fsync, frame, -1, op_errno, NULL, NULL);
+ STACK_UNWIND_STRICT (fsync, frame, -1, op_errno, NULL, NULL);
return 0;
}
@@ -613,20 +618,20 @@ ra_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
struct iatt *postbuf)
{
- fd_t *fd = NULL;
- ra_file_t *file = NULL;
- uint64_t tmp_file = 0;
+ fd_t *fd = NULL;
+ ra_file_t *file = NULL;
+ uint64_t tmp_file = 0;
- fd = frame->local;
+ fd = frame->local;
- fd_ctx_get (fd, this, &tmp_file);
- file = (ra_file_t *)(long)tmp_file;
+ fd_ctx_get (fd, this, &tmp_file);
+ file = (ra_file_t *)(long)tmp_file;
flush_region (frame, file, 0, file->pages.prev->offset+1);
- frame->local = NULL;
- STACK_UNWIND_STRICT (writev, frame, op_ret, op_errno, prebuf, postbuf);
- return 0;
+ frame->local = NULL;
+ STACK_UNWIND_STRICT (writev, frame, op_ret, op_errno, prebuf, postbuf);
+ return 0;
}
@@ -634,12 +639,12 @@ int
ra_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *vector,
int32_t count, off_t offset, struct iobref *iobref)
{
- ra_file_t *file = NULL;
- uint64_t tmp_file = 0;
+ ra_file_t *file = NULL;
+ uint64_t tmp_file = 0;
int32_t op_errno = 0;
- fd_ctx_get (fd, this, &tmp_file);
- file = (ra_file_t *)(long)tmp_file;
+ fd_ctx_get (fd, this, &tmp_file);
+ file = (ra_file_t *)(long)tmp_file;
if (file == NULL) {
op_errno = EBADF;
gf_log (this->name, GF_LOG_DEBUG, "writev received on fd with"
@@ -652,17 +657,17 @@ ra_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *vector,
/* reset the read-ahead counters too */
file->expected = file->page_count = 0;
- frame->local = fd;
+ frame->local = fd;
- STACK_WIND (frame, ra_writev_cbk,
- FIRST_CHILD(this),
- FIRST_CHILD(this)->fops->writev,
- fd, vector, count, offset, iobref);
+ STACK_WIND (frame, ra_writev_cbk,
+ FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->writev,
+ fd, vector, count, offset, iobref);
- return 0;
+ return 0;
unwind:
- STACK_UNWIND_STRICT (writev, frame, -1, op_errno, NULL, NULL);
+ STACK_UNWIND_STRICT (writev, frame, -1, op_errno, NULL, NULL);
return 0;
}
@@ -672,122 +677,123 @@ ra_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
struct iatt *postbuf)
{
- STACK_UNWIND_STRICT (truncate, frame, op_ret, op_errno, prebuf,
+ STACK_UNWIND_STRICT (truncate, frame, op_ret, op_errno, prebuf,
postbuf);
- return 0;
+ return 0;
}
int
ra_attr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, struct iatt *buf)
+ int32_t op_ret, int32_t op_errno, struct iatt *buf)
{
- STACK_UNWIND_STRICT (stat, frame, op_ret, op_errno, buf);
- return 0;
+ STACK_UNWIND_STRICT (stat, frame, op_ret, op_errno, buf);
+ return 0;
}
int
ra_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset)
{
- ra_file_t *file = NULL;
- fd_t *iter_fd = NULL;
- inode_t *inode = NULL;
- uint64_t tmp_file = 0;
-
- inode = loc->inode;
-
- LOCK (&inode->lock);
- {
- list_for_each_entry (iter_fd, &inode->fd_list, inode_list) {
- fd_ctx_get (iter_fd, this, &tmp_file);
- file = (ra_file_t *)(long)tmp_file;
-
- if (!file)
- continue;
- flush_region (frame, file, 0,
- file->pages.prev->offset + 1);
- }
- }
- UNLOCK (&inode->lock);
-
- STACK_WIND (frame, ra_truncate_cbk,
- FIRST_CHILD (this),
- FIRST_CHILD (this)->fops->truncate,
- loc, offset);
- return 0;
+ ra_file_t *file = NULL;
+ fd_t *iter_fd = NULL;
+ inode_t *inode = NULL;
+ uint64_t tmp_file = 0;
+
+ inode = loc->inode;
+
+ LOCK (&inode->lock);
+ {
+ list_for_each_entry (iter_fd, &inode->fd_list, inode_list) {
+ fd_ctx_get (iter_fd, this, &tmp_file);
+ file = (ra_file_t *)(long)tmp_file;
+
+ if (!file)
+ continue;
+ flush_region (frame, file, 0,
+ file->pages.prev->offset + 1);
+ }
+ }
+ UNLOCK (&inode->lock);
+
+ STACK_WIND (frame, ra_truncate_cbk,
+ FIRST_CHILD (this),
+ FIRST_CHILD (this)->fops->truncate,
+ loc, offset);
+ return 0;
}
int
ra_fstat (call_frame_t *frame, xlator_t *this, fd_t *fd)
{
- ra_file_t *file = NULL;
- fd_t *iter_fd = NULL;
- inode_t *inode = NULL;
- uint64_t tmp_file = 0;
-
- inode = fd->inode;
-
- LOCK (&inode->lock);
- {
- list_for_each_entry (iter_fd, &inode->fd_list, inode_list) {
- fd_ctx_get (iter_fd, this, &tmp_file);
- file = (ra_file_t *)(long)tmp_file;
-
- if (!file)
- continue;
- flush_region (frame, file, 0,
- file->pages.prev->offset + 1);
- }
- }
- UNLOCK (&inode->lock);
-
- STACK_WIND (frame, ra_attr_cbk,
- FIRST_CHILD (this),
- FIRST_CHILD (this)->fops->fstat,
- fd);
- return 0;
+ ra_file_t *file = NULL;
+ fd_t *iter_fd = NULL;
+ inode_t *inode = NULL;
+ uint64_t tmp_file = 0;
+
+ inode = fd->inode;
+
+ LOCK (&inode->lock);
+ {
+ list_for_each_entry (iter_fd, &inode->fd_list, inode_list) {
+ fd_ctx_get (iter_fd, this, &tmp_file);
+ file = (ra_file_t *)(long)tmp_file;
+
+ if (!file)
+ continue;
+ flush_region (frame, file, 0,
+ file->pages.prev->offset + 1);
+ }
+ }
+ UNLOCK (&inode->lock);
+
+ STACK_WIND (frame, ra_attr_cbk,
+ FIRST_CHILD (this),
+ FIRST_CHILD (this)->fops->fstat,
+ fd);
+ return 0;
}
int
ra_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset)
{
- ra_file_t *file = NULL;
- fd_t *iter_fd = NULL;
- inode_t *inode = NULL;
- uint64_t tmp_file = 0;
-
- inode = fd->inode;
-
- LOCK (&inode->lock);
- {
- list_for_each_entry (iter_fd, &inode->fd_list, inode_list) {
- fd_ctx_get (iter_fd, this, &tmp_file);
- file = (ra_file_t *)(long)tmp_file;
- if (!file)
- continue;
- flush_region (frame, file, 0,
- file->pages.prev->offset + 1);
- }
- }
- UNLOCK (&inode->lock);
-
- STACK_WIND (frame, ra_truncate_cbk,
- FIRST_CHILD (this),
- FIRST_CHILD (this)->fops->ftruncate,
- fd, offset);
- return 0;
+ ra_file_t *file = NULL;
+ fd_t *iter_fd = NULL;
+ inode_t *inode = NULL;
+ uint64_t tmp_file = 0;
+
+ inode = fd->inode;
+
+ LOCK (&inode->lock);
+ {
+ list_for_each_entry (iter_fd, &inode->fd_list, inode_list) {
+ fd_ctx_get (iter_fd, this, &tmp_file);
+ file = (ra_file_t *)(long)tmp_file;
+ if (!file)
+ continue;
+ flush_region (frame, file, 0,
+ file->pages.prev->offset + 1);
+ }
+ }
+ UNLOCK (&inode->lock);
+
+ STACK_WIND (frame, ra_truncate_cbk,
+ FIRST_CHILD (this),
+ FIRST_CHILD (this)->fops->ftruncate,
+ fd, offset);
+ return 0;
}
+
int
ra_priv_dump (xlator_t *this)
{
- ra_conf_t *conf = NULL;
- int ret = -1;
- char key[GF_DUMP_MAX_BUF_LEN];
- char key_prefix[GF_DUMP_MAX_BUF_LEN];
+ ra_conf_t *conf = NULL;
+ int ret = -1;
+ char key[GF_DUMP_MAX_BUF_LEN] = {0, };
+ char key_prefix[GF_DUMP_MAX_BUF_LEN] = {0, };
if (!this)
return -1;
@@ -806,9 +812,7 @@ ra_priv_dump (xlator_t *this)
return -1;
}
-
- gf_proc_dump_build_key (key_prefix,
- "xlator.performance.read-ahead",
+ gf_proc_dump_build_key (key_prefix, "xlator.performance.read-ahead",
"priv");
gf_proc_dump_add_section (key_prefix);
@@ -824,19 +828,21 @@ ra_priv_dump (xlator_t *this)
return 0;
}
+
int32_t
mem_acct_init (xlator_t *this)
{
int ret = -1;
- if (!this)
+ if (!this) {
return ret;
+ }
ret = xlator_mem_acct_init (this, gf_ra_mt_end + 1);
-
+
if (ret != 0) {
gf_log (this->name, GF_LOG_ERROR, "Memory accounting init"
- "failed");
+ "failed");
return ret;
}
@@ -846,24 +852,24 @@ mem_acct_init (xlator_t *this)
int
init (xlator_t *this)
{
- ra_conf_t *conf = NULL;
- dict_t *options = this->options;
- char *page_count_string = NULL;
- int32_t ret = -1;
-
- if (!this->children || this->children->next) {
- gf_log (this->name, GF_LOG_ERROR,
- "FATAL: read-ahead not configured with exactly one"
+ ra_conf_t *conf = NULL;
+ dict_t *options = this->options;
+ char *page_count_string = NULL;
+ int32_t ret = -1;
+
+ if (!this->children || this->children->next) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "FATAL: read-ahead not configured with exactly one"
" child");
goto out;
- }
-
- if (!this->parents) {
- gf_log (this->name, GF_LOG_WARNING,
- "dangling volume. check volfile ");
- }
-
- conf = (void *) GF_CALLOC (1, sizeof (*conf),
+ }
+
+ if (!this->parents) {
+ gf_log (this->name, GF_LOG_WARNING,
+ "dangling volume. check volfile ");
+ }
+
+ conf = (void *) GF_CALLOC (1, sizeof (*conf),
gf_ra_mt_ra_conf_t);
if (conf == NULL) {
gf_log (this->name, GF_LOG_ERROR,
@@ -871,48 +877,54 @@ init (xlator_t *this)
goto out;
}
- conf->page_size = this->ctx->page_size;
- conf->page_count = 4;
-
- if (dict_get (options, "page-count"))
- page_count_string = data_to_str (dict_get (options,
- "page-count"));
- if (page_count_string)
- {
- if (gf_string2uint_base10 (page_count_string, &conf->page_count)
- != 0)
- {
- gf_log ("read-ahead",
- GF_LOG_ERROR,
- "invalid number format \"%s\" of \"option "
- "page-count\"",
- page_count_string);
+ conf->page_size = this->ctx->page_size;
+ conf->page_count = 4;
+
+ if (dict_get (options, "page-count")) {
+ page_count_string = data_to_str (dict_get (options,
+ "page-count"));
+ }
+
+ if (page_count_string) {
+ if (gf_string2uint_base10 (page_count_string, &conf->page_count)
+ != 0) {
+ gf_log ("read-ahead", GF_LOG_ERROR,
+ "invalid number format \"%s\" of \"option "
+ "page-count\"",
+ page_count_string);
goto out;
- }
- gf_log (this->name, GF_LOG_DEBUG, "Using conf->page_count = %u",
- conf->page_count);
- }
-
- if (dict_get (options, "force-atime-update")) {
- char *force_atime_update_str = data_to_str (dict_get (options,
- "force-atime-update"));
- if (gf_string2boolean (force_atime_update_str,
+ }
+
+ gf_log (this->name, GF_LOG_DEBUG, "Using conf->page_count = %u",
+ conf->page_count);
+ }
+
+ if (dict_get (options, "force-atime-update")) {
+ char *force_atime_update_str = NULL;
+
+ force_atime_update_str
+ = data_to_str (dict_get (options,
+ "force-atime-update"));
+
+ if (gf_string2boolean (force_atime_update_str,
&conf->force_atime_update) == -1) {
- gf_log (this->name, GF_LOG_ERROR,
- "'force-atime-update' takes only boolean "
+ gf_log (this->name, GF_LOG_ERROR,
+ "'force-atime-update' takes only boolean "
"options");
goto out;
- }
- if (conf->force_atime_update)
- gf_log (this->name, GF_LOG_DEBUG, "Forcing atime "
+ }
+
+ if (conf->force_atime_update) {
+ gf_log (this->name, GF_LOG_DEBUG, "Forcing atime "
"updates on cache hit");
- }
+ }
+ }
- conf->files.next = &conf->files;
- conf->files.prev = &conf->files;
+ conf->files.next = &conf->files;
+ conf->files.prev = &conf->files;
- pthread_mutex_init (&conf->conf_lock, NULL);
- this->private = conf;
+ pthread_mutex_init (&conf->conf_lock, NULL);
+ this->private = conf;
ret = 0;
out:
@@ -925,35 +937,36 @@ out:
return ret;
}
+
void
fini (xlator_t *this)
{
- ra_conf_t *conf = this->private;
+ ra_conf_t *conf = this->private;
if (conf == NULL)
return;
- pthread_mutex_destroy (&conf->conf_lock);
- GF_FREE (conf);
+ pthread_mutex_destroy (&conf->conf_lock);
+ GF_FREE (conf);
- this->private = NULL;
- return;
+ this->private = NULL;
+ return;
}
struct xlator_fops fops = {
- .open = ra_open,
- .create = ra_create,
- .readv = ra_readv,
- .writev = ra_writev,
- .flush = ra_flush,
- .fsync = ra_fsync,
- .truncate = ra_truncate,
- .ftruncate = ra_ftruncate,
- .fstat = ra_fstat,
+ .open = ra_open,
+ .create = ra_create,
+ .readv = ra_readv,
+ .writev = ra_writev,
+ .flush = ra_flush,
+ .fsync = ra_fsync,
+ .truncate = ra_truncate,
+ .ftruncate = ra_ftruncate,
+ .fstat = ra_fstat,
};
struct xlator_cbks cbks = {
- .release = ra_release,
+ .release = ra_release,
};
struct xlator_dumpops dumpops = {
@@ -961,13 +974,13 @@ struct xlator_dumpops dumpops = {
};
struct volume_options options[] = {
- { .key = {"force-atime-update"},
- .type = GF_OPTION_TYPE_BOOL
- },
- { .key = {"page-count"},
- .type = GF_OPTION_TYPE_INT,
- .min = 1,
- .max = 16
- },
- { .key = {NULL} },
+ { .key = {"force-atime-update"},
+ .type = GF_OPTION_TYPE_BOOL
+ },
+ { .key = {"page-count"},
+ .type = GF_OPTION_TYPE_INT,
+ .min = 1,
+ .max = 16
+ },
+ { .key = {NULL} },
};