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-rw-r--r--fs/afs/callback.c2
-rw-r--r--fs/afs/cmservice.c63
-rw-r--r--fs/afs/file.c170
-rw-r--r--fs/afs/fsclient.c195
-rw-r--r--fs/afs/internal.h115
-rw-r--r--fs/afs/main.c1
-rw-r--r--fs/afs/rxrpc.c208
-rw-r--r--fs/afs/vlclient.c8
-rw-r--r--fs/afs/vlocation.c4
-rw-r--r--fs/afs/vnode.c30
-rw-r--r--fs/afs/volume.c1
-rw-r--r--fs/afs/write.c19
12 files changed, 521 insertions, 295 deletions
diff --git a/fs/afs/callback.c b/fs/afs/callback.c
index 1e9d2f84e5b5..b29447e03ede 100644
--- a/fs/afs/callback.c
+++ b/fs/afs/callback.c
@@ -343,7 +343,7 @@ void afs_dispatch_give_up_callbacks(struct work_struct *work)
* had callbacks entirely, and the server will call us later to break
* them
*/
- afs_fs_give_up_callbacks(server, &afs_async_call);
+ afs_fs_give_up_callbacks(server, true);
}
/*
diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c
index d764236072b1..e349a3316303 100644
--- a/fs/afs/cmservice.c
+++ b/fs/afs/cmservice.c
@@ -24,65 +24,86 @@ static int afs_deliver_cb_callback(struct afs_call *);
static int afs_deliver_cb_probe_uuid(struct afs_call *);
static int afs_deliver_cb_tell_me_about_yourself(struct afs_call *);
static void afs_cm_destructor(struct afs_call *);
+static void SRXAFSCB_CallBack(struct work_struct *);
+static void SRXAFSCB_InitCallBackState(struct work_struct *);
+static void SRXAFSCB_Probe(struct work_struct *);
+static void SRXAFSCB_ProbeUuid(struct work_struct *);
+static void SRXAFSCB_TellMeAboutYourself(struct work_struct *);
+
+#define CM_NAME(name) \
+ const char afs_SRXCB##name##_name[] __tracepoint_string = \
+ "CB." #name
/*
* CB.CallBack operation type
*/
+static CM_NAME(CallBack);
static const struct afs_call_type afs_SRXCBCallBack = {
- .name = "CB.CallBack",
+ .name = afs_SRXCBCallBack_name,
.deliver = afs_deliver_cb_callback,
.abort_to_error = afs_abort_to_error,
.destructor = afs_cm_destructor,
+ .work = SRXAFSCB_CallBack,
};
/*
* CB.InitCallBackState operation type
*/
+static CM_NAME(InitCallBackState);
static const struct afs_call_type afs_SRXCBInitCallBackState = {
- .name = "CB.InitCallBackState",
+ .name = afs_SRXCBInitCallBackState_name,
.deliver = afs_deliver_cb_init_call_back_state,
.abort_to_error = afs_abort_to_error,
.destructor = afs_cm_destructor,
+ .work = SRXAFSCB_InitCallBackState,
};
/*
* CB.InitCallBackState3 operation type
*/
+static CM_NAME(InitCallBackState3);
static const struct afs_call_type afs_SRXCBInitCallBackState3 = {
- .name = "CB.InitCallBackState3",
+ .name = afs_SRXCBInitCallBackState3_name,
.deliver = afs_deliver_cb_init_call_back_state3,
.abort_to_error = afs_abort_to_error,
.destructor = afs_cm_destructor,
+ .work = SRXAFSCB_InitCallBackState,
};
/*
* CB.Probe operation type
*/
+static CM_NAME(Probe);
static const struct afs_call_type afs_SRXCBProbe = {
- .name = "CB.Probe",
+ .name = afs_SRXCBProbe_name,
.deliver = afs_deliver_cb_probe,
.abort_to_error = afs_abort_to_error,
.destructor = afs_cm_destructor,
+ .work = SRXAFSCB_Probe,
};
/*
* CB.ProbeUuid operation type
*/
+static CM_NAME(ProbeUuid);
static const struct afs_call_type afs_SRXCBProbeUuid = {
- .name = "CB.ProbeUuid",
+ .name = afs_SRXCBProbeUuid_name,
.deliver = afs_deliver_cb_probe_uuid,
.abort_to_error = afs_abort_to_error,
.destructor = afs_cm_destructor,
+ .work = SRXAFSCB_ProbeUuid,
};
/*
* CB.TellMeAboutYourself operation type
*/
+static CM_NAME(TellMeAboutYourself);
static const struct afs_call_type afs_SRXCBTellMeAboutYourself = {
- .name = "CB.TellMeAboutYourself",
+ .name = afs_SRXCBTellMeAboutYourself_name,
.deliver = afs_deliver_cb_tell_me_about_yourself,
.abort_to_error = afs_abort_to_error,
.destructor = afs_cm_destructor,
+ .work = SRXAFSCB_TellMeAboutYourself,
};
/*
@@ -153,6 +174,7 @@ static void SRXAFSCB_CallBack(struct work_struct *work)
afs_send_empty_reply(call);
afs_break_callbacks(call->server, call->count, call->request);
+ afs_put_call(call);
_leave("");
}
@@ -274,9 +296,7 @@ static int afs_deliver_cb_callback(struct afs_call *call)
return -ENOTCONN;
call->server = server;
- INIT_WORK(&call->work, SRXAFSCB_CallBack);
- queue_work(afs_wq, &call->work);
- return 0;
+ return afs_queue_call_work(call);
}
/*
@@ -290,6 +310,7 @@ static void SRXAFSCB_InitCallBackState(struct work_struct *work)
afs_init_callback_state(call->server);
afs_send_empty_reply(call);
+ afs_put_call(call);
_leave("");
}
@@ -320,9 +341,7 @@ static int afs_deliver_cb_init_call_back_state(struct afs_call *call)
return -ENOTCONN;
call->server = server;
- INIT_WORK(&call->work, SRXAFSCB_InitCallBackState);
- queue_work(afs_wq, &call->work);
- return 0;
+ return afs_queue_call_work(call);
}
/*
@@ -394,9 +413,7 @@ static int afs_deliver_cb_init_call_back_state3(struct afs_call *call)
return -ENOTCONN;
call->server = server;
- INIT_WORK(&call->work, SRXAFSCB_InitCallBackState);
- queue_work(afs_wq, &call->work);
- return 0;
+ return afs_queue_call_work(call);
}
/*
@@ -408,6 +425,7 @@ static void SRXAFSCB_Probe(struct work_struct *work)
_enter("");
afs_send_empty_reply(call);
+ afs_put_call(call);
_leave("");
}
@@ -427,9 +445,7 @@ static int afs_deliver_cb_probe(struct afs_call *call)
/* no unmarshalling required */
call->state = AFS_CALL_REPLYING;
- INIT_WORK(&call->work, SRXAFSCB_Probe);
- queue_work(afs_wq, &call->work);
- return 0;
+ return afs_queue_call_work(call);
}
/*
@@ -452,6 +468,7 @@ static void SRXAFSCB_ProbeUuid(struct work_struct *work)
reply.match = htonl(1);
afs_send_simple_reply(call, &reply, sizeof(reply));
+ afs_put_call(call);
_leave("");
}
@@ -510,9 +527,7 @@ static int afs_deliver_cb_probe_uuid(struct afs_call *call)
call->state = AFS_CALL_REPLYING;
- INIT_WORK(&call->work, SRXAFSCB_ProbeUuid);
- queue_work(afs_wq, &call->work);
- return 0;
+ return afs_queue_call_work(call);
}
/*
@@ -574,7 +589,7 @@ static void SRXAFSCB_TellMeAboutYourself(struct work_struct *work)
reply.cap.capcount = htonl(1);
reply.cap.caps[0] = htonl(AFS_CAP_ERROR_TRANSLATION);
afs_send_simple_reply(call, &reply, sizeof(reply));
-
+ afs_put_call(call);
_leave("");
}
@@ -594,7 +609,5 @@ static int afs_deliver_cb_tell_me_about_yourself(struct afs_call *call)
/* no unmarshalling required */
call->state = AFS_CALL_REPLYING;
- INIT_WORK(&call->work, SRXAFSCB_TellMeAboutYourself);
- queue_work(afs_wq, &call->work);
- return 0;
+ return afs_queue_call_work(call);
}
diff --git a/fs/afs/file.c b/fs/afs/file.c
index 6344aee4ac4b..ba7b71fba34b 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -16,6 +16,7 @@
#include <linux/pagemap.h>
#include <linux/writeback.h>
#include <linux/gfp.h>
+#include <linux/task_io_accounting_ops.h>
#include "internal.h"
static int afs_readpage(struct file *file, struct page *page);
@@ -101,6 +102,21 @@ int afs_release(struct inode *inode, struct file *file)
return 0;
}
+/*
+ * Dispose of a ref to a read record.
+ */
+void afs_put_read(struct afs_read *req)
+{
+ int i;
+
+ if (atomic_dec_and_test(&req->usage)) {
+ for (i = 0; i < req->nr_pages; i++)
+ if (req->pages[i])
+ put_page(req->pages[i]);
+ kfree(req);
+ }
+}
+
#ifdef CONFIG_AFS_FSCACHE
/*
* deal with notification that a page was read from the cache
@@ -126,9 +142,8 @@ int afs_page_filler(void *data, struct page *page)
{
struct inode *inode = page->mapping->host;
struct afs_vnode *vnode = AFS_FS_I(inode);
+ struct afs_read *req;
struct key *key = data;
- size_t len;
- off_t offset;
int ret;
_enter("{%x},{%lu},{%lu}", key_serial(key), inode->i_ino, page->index);
@@ -164,12 +179,23 @@ int afs_page_filler(void *data, struct page *page)
_debug("cache said ENOBUFS");
default:
go_on:
- offset = page->index << PAGE_SHIFT;
- len = min_t(size_t, i_size_read(inode) - offset, PAGE_SIZE);
+ req = kzalloc(sizeof(struct afs_read) + sizeof(struct page *),
+ GFP_KERNEL);
+ if (!req)
+ goto enomem;
+
+ atomic_set(&req->usage, 1);
+ req->pos = (loff_t)page->index << PAGE_SHIFT;
+ req->len = min_t(size_t, i_size_read(inode) - req->pos,
+ PAGE_SIZE);
+ req->nr_pages = 1;
+ req->pages[0] = page;
+ get_page(page);
/* read the contents of the file from the server into the
* page */
- ret = afs_vnode_fetch_data(vnode, key, offset, len, page);
+ ret = afs_vnode_fetch_data(vnode, key, req);
+ afs_put_read(req);
if (ret < 0) {
if (ret == -ENOENT) {
_debug("got NOENT from server"
@@ -201,6 +227,8 @@ int afs_page_filler(void *data, struct page *page)
_leave(" = 0");
return 0;
+enomem:
+ ret = -ENOMEM;
error:
SetPageError(page);
unlock_page(page);
@@ -235,6 +263,131 @@ static int afs_readpage(struct file *file, struct page *page)
}
/*
+ * Make pages available as they're filled.
+ */
+static void afs_readpages_page_done(struct afs_call *call, struct afs_read *req)
+{
+#ifdef CONFIG_AFS_FSCACHE
+ struct afs_vnode *vnode = call->reply;
+#endif
+ struct page *page = req->pages[req->index];
+
+ req->pages[req->index] = NULL;
+ SetPageUptodate(page);
+
+ /* send the page to the cache */
+#ifdef CONFIG_AFS_FSCACHE
+ if (PageFsCache(page) &&
+ fscache_write_page(vnode->cache, page, GFP_KERNEL) != 0) {
+ fscache_uncache_page(vnode->cache, page);
+ BUG_ON(PageFsCache(page));
+ }
+#endif
+ unlock_page(page);
+ put_page(page);
+}
+
+/*
+ * Read a contiguous set of pages.
+ */
+static int afs_readpages_one(struct file *file, struct address_space *mapping,
+ struct list_head *pages)
+{
+ struct afs_vnode *vnode = AFS_FS_I(mapping->host);
+ struct afs_read *req;
+ struct list_head *p;
+ struct page *first, *page;
+ struct key *key = file->private_data;
+ pgoff_t index;
+ int ret, n, i;
+
+ /* Count the number of contiguous pages at the front of the list. Note
+ * that the list goes prev-wards rather than next-wards.
+ */
+ first = list_entry(pages->prev, struct page, lru);
+ index = first->index + 1;
+ n = 1;
+ for (p = first->lru.prev; p != pages; p = p->prev) {
+ page = list_entry(p, struct page, lru);
+ if (page->index != index)
+ break;
+ index++;
+ n++;
+ }
+
+ req = kzalloc(sizeof(struct afs_read) + sizeof(struct page *) * n,
+ GFP_NOFS);
+ if (!req)
+ return -ENOMEM;
+
+ atomic_set(&req->usage, 1);
+ req->page_done = afs_readpages_page_done;
+ req->pos = first->index;
+ req->pos <<= PAGE_SHIFT;
+
+ /* Transfer the pages to the request. We add them in until one fails
+ * to add to the LRU and then we stop (as that'll make a hole in the
+ * contiguous run.
+ *
+ * Note that it's possible for the file size to change whilst we're
+ * doing this, but we rely on the server returning less than we asked
+ * for if the file shrank. We also rely on this to deal with a partial
+ * page at the end of the file.
+ */
+ do {
+ page = list_entry(pages->prev, struct page, lru);
+ list_del(&page->lru);
+ index = page->index;
+ if (add_to_page_cache_lru(page, mapping, index,
+ readahead_gfp_mask(mapping))) {
+#ifdef CONFIG_AFS_FSCACHE
+ fscache_uncache_page(vnode->cache, page);
+#endif
+ put_page(page);
+ break;
+ }
+
+ req->pages[req->nr_pages++] = page;
+ req->len += PAGE_SIZE;
+ } while (req->nr_pages < n);
+
+ if (req->nr_pages == 0) {
+ kfree(req);
+ return 0;
+ }
+
+ ret = afs_vnode_fetch_data(vnode, key, req);
+ if (ret < 0)
+ goto error;
+
+ task_io_account_read(PAGE_SIZE * req->nr_pages);
+ afs_put_read(req);
+ return 0;
+
+error:
+ if (ret == -ENOENT) {
+ _debug("got NOENT from server"
+ " - marking file deleted and stale");
+ set_bit(AFS_VNODE_DELETED, &vnode->flags);
+ ret = -ESTALE;
+ }
+
+ for (i = 0; i < req->nr_pages; i++) {
+ page = req->pages[i];
+ if (page) {
+#ifdef CONFIG_AFS_FSCACHE
+ fscache_uncache_page(vnode->cache, page);
+#endif
+ SetPageError(page);
+ unlock_page(page);
+ }
+ }
+
+ afs_put_read(req);
+ return ret;
+}
+
+/*
* read a set of pages
*/
static int afs_readpages(struct file *file, struct address_space *mapping,
@@ -287,8 +440,11 @@ static int afs_readpages(struct file *file, struct address_space *mapping,
return ret;
}
- /* load the missing pages from the network */
- ret = read_cache_pages(mapping, pages, afs_page_filler, key);
+ while (!list_empty(pages)) {
+ ret = afs_readpages_one(file, mapping, pages);
+ if (ret < 0)
+ break;
+ }
_leave(" = %d [netting]", ret);
return ret;
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
index 31c616ab9b40..ac8e766978dc 100644
--- a/fs/afs/fsclient.c
+++ b/fs/afs/fsclient.c
@@ -275,7 +275,7 @@ int afs_fs_fetch_file_status(struct afs_server *server,
struct key *key,
struct afs_vnode *vnode,
struct afs_volsync *volsync,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
__be32 *bp;
@@ -300,7 +300,7 @@ int afs_fs_fetch_file_status(struct afs_server *server,
bp[2] = htonl(vnode->fid.vnode);
bp[3] = htonl(vnode->fid.unique);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -309,15 +309,19 @@ int afs_fs_fetch_file_status(struct afs_server *server,
static int afs_deliver_fs_fetch_data(struct afs_call *call)
{
struct afs_vnode *vnode = call->reply;
+ struct afs_read *req = call->reply3;
const __be32 *bp;
- struct page *page;
+ unsigned int size;
void *buffer;
int ret;
- _enter("{%u}", call->unmarshall);
+ _enter("{%u,%zu/%u;%u/%llu}",
+ call->unmarshall, call->offset, call->count,
+ req->remain, req->actual_len);
switch (call->unmarshall) {
case 0:
+ req->actual_len = 0;
call->offset = 0;
call->unmarshall++;
if (call->operation_ID != FSFETCHDATA64) {
@@ -334,10 +338,8 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
if (ret < 0)
return ret;
- call->count = ntohl(call->tmp);
- _debug("DATA length MSW: %u", call->count);
- if (call->count > 0)
- return -EBADMSG;
+ req->actual_len = ntohl(call->tmp);
+ req->actual_len <<= 32;
call->offset = 0;
call->unmarshall++;
@@ -349,26 +351,52 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
if (ret < 0)
return ret;
- call->count = ntohl(call->tmp);
- _debug("DATA length: %u", call->count);
- if (call->count > PAGE_SIZE)
+ req->actual_len |= ntohl(call->tmp);
+ _debug("DATA length: %llu", req->actual_len);
+ /* Check that the server didn't want to send us extra. We
+ * might want to just discard instead, but that requires
+ * cooperation from AF_RXRPC.
+ */
+ if (req->actual_len > req->len)
return -EBADMSG;
- call->offset = 0;
+
+ req->remain = req->actual_len;
+ call->offset = req->pos & (PAGE_SIZE - 1);
+ req->index = 0;
+ if (req->actual_len == 0)
+ goto no_more_data;
call->unmarshall++;
+ begin_page:
+ if (req->remain > PAGE_SIZE - call->offset)
+ size = PAGE_SIZE - call->offset;
+ else
+ size = req->remain;
+ call->count = call->offset + size;
+ ASSERTCMP(call->count, <=, PAGE_SIZE);
+ req->remain -= size;
+
/* extract the returned data */
case 3:
- _debug("extract data");
- if (call->count > 0) {
- page = call->reply3;
- buffer = kmap(page);
- ret = afs_extract_data(call, buffer,
- call->count, true);
- kunmap(page);
- if (ret < 0)
- return ret;
+ _debug("extract data %u/%llu %zu/%u",
+ req->remain, req->actual_len, call->offset, call->count);
+
+ buffer = kmap(req->pages[req->index]);
+ ret = afs_extract_data(call, buffer, call->count, true);
+ kunmap(req->pages[req->index]);
+ if (ret < 0)
+ return ret;
+ if (call->offset == PAGE_SIZE) {
+ if (req->page_done)
+ req->page_done(call, req);
+ if (req->remain > 0) {
+ req->index++;
+ call->offset = 0;
+ goto begin_page;
+ }
}
+ no_more_data:
call->offset = 0;
call->unmarshall++;
@@ -393,17 +421,25 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
}
if (call->count < PAGE_SIZE) {
- _debug("clear");
- page = call->reply3;
- buffer = kmap(page);
+ buffer = kmap(req->pages[req->index]);
memset(buffer + call->count, 0, PAGE_SIZE - call->count);
- kunmap(page);
+ kunmap(req->pages[req->index]);
+ if (req->page_done)
+ req->page_done(call, req);
}
_leave(" = 0 [done]");
return 0;
}
+static void afs_fetch_data_destructor(struct afs_call *call)
+{
+ struct afs_read *req = call->reply3;
+
+ afs_put_read(req);
+ afs_flat_call_destructor(call);
+}
+
/*
* FS.FetchData operation type
*/
@@ -411,14 +447,14 @@ static const struct afs_call_type afs_RXFSFetchData = {
.name = "FS.FetchData",
.deliver = afs_deliver_fs_fetch_data,
.abort_to_error = afs_abort_to_error,
- .destructor = afs_flat_call_destructor,
+ .destructor = afs_fetch_data_destructor,
};
static const struct afs_call_type afs_RXFSFetchData64 = {
.name = "FS.FetchData64",
.deliver = afs_deliver_fs_fetch_data,
.abort_to_error = afs_abort_to_error,
- .destructor = afs_flat_call_destructor,
+ .destructor = afs_fetch_data_destructor,
};
/*
@@ -427,17 +463,14 @@ static const struct afs_call_type afs_RXFSFetchData64 = {
static int afs_fs_fetch_data64(struct afs_server *server,
struct key *key,
struct afs_vnode *vnode,
- off_t offset, size_t length,
- struct page *buffer,
- const struct afs_wait_mode *wait_mode)
+ struct afs_read *req,
+ bool async)
{
struct afs_call *call;
__be32 *bp;
_enter("");
- ASSERTCMP(length, <, ULONG_MAX);
-
call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
if (!call)
return -ENOMEM;
@@ -445,7 +478,7 @@ static int afs_fs_fetch_data64(struct afs_server *server,
call->key = key;
call->reply = vnode;
call->reply2 = NULL; /* volsync */
- call->reply3 = buffer;
+ call->reply3 = req;
call->service_id = FS_SERVICE;
call->port = htons(AFS_FS_PORT);
call->operation_ID = FSFETCHDATA64;
@@ -456,12 +489,13 @@ static int afs_fs_fetch_data64(struct afs_server *server,
bp[1] = htonl(vnode->fid.vid);
bp[2] = htonl(vnode->fid.vnode);
bp[3] = htonl(vnode->fid.unique);
- bp[4] = htonl(upper_32_bits(offset));
- bp[5] = htonl((u32) offset);
+ bp[4] = htonl(upper_32_bits(req->pos));
+ bp[5] = htonl(lower_32_bits(req->pos));
bp[6] = 0;
- bp[7] = htonl((u32) length);
+ bp[7] = htonl(lower_32_bits(req->len));
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ atomic_inc(&req->usage);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -470,16 +504,16 @@ static int afs_fs_fetch_data64(struct afs_server *server,
int afs_fs_fetch_data(struct afs_server *server,
struct key *key,
struct afs_vnode *vnode,
- off_t offset, size_t length,
- struct page *buffer,
- const struct afs_wait_mode *wait_mode)
+ struct afs_read *req,
+ bool async)
{
struct afs_call *call;
__be32 *bp;
- if (upper_32_bits(offset) || upper_32_bits(offset + length))
- return afs_fs_fetch_data64(server, key, vnode, offset, length,
- buffer, wait_mode);
+ if (upper_32_bits(req->pos) ||
+ upper_32_bits(req->len) ||
+ upper_32_bits(req->pos + req->len))
+ return afs_fs_fetch_data64(server, key, vnode, req, async);
_enter("");
@@ -490,7 +524,7 @@ int afs_fs_fetch_data(struct afs_server *server,
call->key = key;
call->reply = vnode;
call->reply2 = NULL; /* volsync */
- call->reply3 = buffer;
+ call->reply3 = req;
call->service_id = FS_SERVICE;
call->port = htons(AFS_FS_PORT);
call->operation_ID = FSFETCHDATA;
@@ -501,10 +535,11 @@ int afs_fs_fetch_data(struct afs_server *server,
bp[1] = htonl(vnode->fid.vid);
bp[2] = htonl(vnode->fid.vnode);
bp[3] = htonl(vnode->fid.unique);
- bp[4] = htonl(offset);
- bp[5] = htonl(length);
+ bp[4] = htonl(lower_32_bits(req->pos));
+ bp[5] = htonl(lower_32_bits(req->len));
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ atomic_inc(&req->usage);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -533,7 +568,7 @@ static const struct afs_call_type afs_RXFSGiveUpCallBacks = {
* - the callbacks are held in the server->cb_break ring
*/
int afs_fs_give_up_callbacks(struct afs_server *server,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
size_t ncallbacks;
@@ -587,7 +622,7 @@ int afs_fs_give_up_callbacks(struct afs_server *server,
ASSERT(ncallbacks > 0);
wake_up_nr(&server->cb_break_waitq, ncallbacks);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -638,7 +673,7 @@ int afs_fs_create(struct afs_server *server,
struct afs_fid *newfid,
struct afs_file_status *newstatus,
struct afs_callback *newcb,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
size_t namesz, reqsz, padsz;
@@ -683,7 +718,7 @@ int afs_fs_create(struct afs_server *server,
*bp++ = htonl(mode & S_IALLUGO); /* unix mode */
*bp++ = 0; /* segment size */
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -728,7 +763,7 @@ int afs_fs_remove(struct afs_server *server,
struct afs_vnode *vnode,
const char *name,
bool isdir,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
size_t namesz, reqsz, padsz;
@@ -763,7 +798,7 @@ int afs_fs_remove(struct afs_server *server,
bp = (void *) bp + padsz;
}
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -809,7 +844,7 @@ int afs_fs_link(struct afs_server *server,
struct afs_vnode *dvnode,
struct afs_vnode *vnode,
const char *name,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
size_t namesz, reqsz, padsz;
@@ -848,7 +883,7 @@ int afs_fs_link(struct afs_server *server,
*bp++ = htonl(vnode->fid.vnode);
*bp++ = htonl(vnode->fid.unique);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -897,7 +932,7 @@ int afs_fs_symlink(struct afs_server *server,
const char *contents,
struct afs_fid *newfid,
struct afs_file_status *newstatus,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
size_t namesz, reqsz, padsz, c_namesz, c_padsz;
@@ -952,7 +987,7 @@ int afs_fs_symlink(struct afs_server *server,
*bp++ = htonl(S_IRWXUGO); /* unix mode */
*bp++ = 0; /* segment size */
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -1001,7 +1036,7 @@ int afs_fs_rename(struct afs_server *server,
const char *orig_name,
struct afs_vnode *new_dvnode,
const char *new_name,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
@@ -1055,7 +1090,7 @@ int afs_fs_rename(struct afs_server *server,
bp = (void *) bp + n_padsz;
}
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -1110,7 +1145,7 @@ static int afs_fs_store_data64(struct afs_server *server,
pgoff_t first, pgoff_t last,
unsigned offset, unsigned to,
loff_t size, loff_t pos, loff_t i_size,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_vnode *vnode = wb->vnode;
struct afs_call *call;
@@ -1159,7 +1194,7 @@ static int afs_fs_store_data64(struct afs_server *server,
*bp++ = htonl(i_size >> 32);
*bp++ = htonl((u32) i_size);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -1168,7 +1203,7 @@ static int afs_fs_store_data64(struct afs_server *server,
int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb,
pgoff_t first, pgoff_t last,
unsigned offset, unsigned to,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_vnode *vnode = wb->vnode;
struct afs_call *call;
@@ -1194,7 +1229,7 @@ int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb,
if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32)
return afs_fs_store_data64(server, wb, first, last, offset, to,
- size, pos, i_size, wait_mode);
+ size, pos, i_size, async);
call = afs_alloc_flat_call(&afs_RXFSStoreData,
(4 + 6 + 3) * 4,
@@ -1233,7 +1268,7 @@ int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb,
*bp++ = htonl(size);
*bp++ = htonl(i_size);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -1295,7 +1330,7 @@ static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
*/
static int afs_fs_setattr_size64(struct afs_server *server, struct key *key,
struct afs_vnode *vnode, struct iattr *attr,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
__be32 *bp;
@@ -1334,7 +1369,7 @@ static int afs_fs_setattr_size64(struct afs_server *server, struct key *key,
*bp++ = htonl(attr->ia_size >> 32); /* new file length */
*bp++ = htonl((u32) attr->ia_size);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -1343,7 +1378,7 @@ static int afs_fs_setattr_size64(struct afs_server *server, struct key *key,
*/
static int afs_fs_setattr_size(struct afs_server *server, struct key *key,
struct afs_vnode *vnode, struct iattr *attr,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
__be32 *bp;
@@ -1354,7 +1389,7 @@ static int afs_fs_setattr_size(struct afs_server *server, struct key *key,
ASSERT(attr->ia_valid & ATTR_SIZE);
if (attr->ia_size >> 32)
return afs_fs_setattr_size64(server, key, vnode, attr,
- wait_mode);
+ async);
call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status,
(4 + 6 + 3) * 4,
@@ -1382,7 +1417,7 @@ static int afs_fs_setattr_size(struct afs_server *server, struct key *key,
*bp++ = 0; /* size of write */
*bp++ = htonl(attr->ia_size); /* new file length */
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -1391,14 +1426,14 @@ static int afs_fs_setattr_size(struct afs_server *server, struct key *key,
*/
int afs_fs_setattr(struct afs_server *server, struct key *key,
struct afs_vnode *vnode, struct iattr *attr,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
__be32 *bp;
if (attr->ia_valid & ATTR_SIZE)
return afs_fs_setattr_size(server, key, vnode, attr,
- wait_mode);
+ async);
_enter(",%x,{%x:%u},,",
key_serial(key), vnode->fid.vid, vnode->fid.vnode);
@@ -1424,7 +1459,7 @@ int afs_fs_setattr(struct afs_server *server, struct key *key,
xdr_encode_AFS_StoreStatus(&bp, attr);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -1626,7 +1661,7 @@ int afs_fs_get_volume_status(struct afs_server *server,
struct key *key,
struct afs_vnode *vnode,
struct afs_volume_status *vs,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
__be32 *bp;
@@ -1656,7 +1691,7 @@ int afs_fs_get_volume_status(struct afs_server *server,
bp[0] = htonl(FSGETVOLUMESTATUS);
bp[1] = htonl(vnode->fid.vid);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -1718,7 +1753,7 @@ int afs_fs_set_lock(struct afs_server *server,
struct key *key,
struct afs_vnode *vnode,
afs_lock_type_t type,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
__be32 *bp;
@@ -1742,7 +1777,7 @@ int afs_fs_set_lock(struct afs_server *server,
*bp++ = htonl(vnode->fid.unique);
*bp++ = htonl(type);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -1751,7 +1786,7 @@ int afs_fs_set_lock(struct afs_server *server,
int afs_fs_extend_lock(struct afs_server *server,
struct key *key,
struct afs_vnode *vnode,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
__be32 *bp;
@@ -1774,7 +1809,7 @@ int afs_fs_extend_lock(struct afs_server *server,
*bp++ = htonl(vnode->fid.vnode);
*bp++ = htonl(vnode->fid.unique);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
/*
@@ -1783,7 +1818,7 @@ int afs_fs_extend_lock(struct afs_server *server,
int afs_fs_release_lock(struct afs_server *server,
struct key *key,
struct afs_vnode *vnode,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
__be32 *bp;
@@ -1806,5 +1841,5 @@ int afs_fs_release_lock(struct afs_server *server,
*bp++ = htonl(vnode->fid.vnode);
*bp++ = htonl(vnode->fid.unique);
- return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+ return afs_make_call(&server->addr, call, GFP_NOFS, async);
}
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 535a38d2c1d0..65504e218d35 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -51,31 +51,22 @@ struct afs_mount_params {
struct key *key; /* key to use for secure mounting */
};
-/*
- * definition of how to wait for the completion of an operation
- */
-struct afs_wait_mode {
- /* RxRPC received message notification */
- rxrpc_notify_rx_t notify_rx;
-
- /* synchronous call waiter and call dispatched notification */
- int (*wait)(struct afs_call *call);
-
- /* asynchronous call completion */
- void (*async_complete)(void *reply, int error);
+enum afs_call_state {
+ AFS_CALL_REQUESTING, /* request is being sent for outgoing call */
+ AFS_CALL_AWAIT_REPLY, /* awaiting reply to outgoing call */
+ AFS_CALL_AWAIT_OP_ID, /* awaiting op ID on incoming call */
+ AFS_CALL_AWAIT_REQUEST, /* awaiting request data on incoming call */
+ AFS_CALL_REPLYING, /* replying to incoming call */
+ AFS_CALL_AWAIT_ACK, /* awaiting final ACK of incoming call */
+ AFS_CALL_COMPLETE, /* Completed or failed */
};
-
-extern const struct afs_wait_mode afs_sync_call;
-extern const struct afs_wait_mode afs_async_call;
-
/*
* a record of an in-progress RxRPC call
*/
struct afs_call {
const struct afs_call_type *type; /* type of call */
- const struct afs_wait_mode *wait_mode; /* completion wait mode */
wait_queue_head_t waitq; /* processes awaiting completion */
- struct work_struct async_work; /* asynchronous work processor */
+ struct work_struct async_work; /* async I/O processor */
struct work_struct work; /* actual work processor */
struct rxrpc_call *rxcall; /* RxRPC call handle */
struct key *key; /* security for this call */
@@ -91,15 +82,8 @@ struct afs_call {
pgoff_t first; /* first page in mapping to deal with */
pgoff_t last; /* last page in mapping to deal with */
size_t offset; /* offset into received data store */
- enum { /* call state */
- AFS_CALL_REQUESTING, /* request is being sent for outgoing call */
- AFS_CALL_AWAIT_REPLY, /* awaiting reply to outgoing call */
- AFS_CALL_AWAIT_OP_ID, /* awaiting op ID on incoming call */
- AFS_CALL_AWAIT_REQUEST, /* awaiting request data on incoming call */
- AFS_CALL_REPLYING, /* replying to incoming call */
- AFS_CALL_AWAIT_ACK, /* awaiting final ACK of incoming call */
- AFS_CALL_COMPLETE, /* Completed or failed */
- } state;
+ atomic_t usage;
+ enum afs_call_state state;
int error; /* error code */
u32 abort_code; /* Remote abort ID or 0 */
unsigned request_size; /* size of request data */
@@ -110,6 +94,7 @@ struct afs_call {
bool incoming; /* T if incoming call */
bool send_pages; /* T if data from mapping should be sent */
bool need_attention; /* T if RxRPC poked us */
+ bool async; /* T if asynchronous */
u16 service_id; /* RxRPC service ID to call */
__be16 port; /* target UDP port */
u32 operation_ID; /* operation ID for an incoming call */
@@ -131,6 +116,25 @@ struct afs_call_type {
/* clean up a call */
void (*destructor)(struct afs_call *call);
+
+ /* Work function */
+ void (*work)(struct work_struct *work);
+};
+
+/*
+ * Record of an outstanding read operation on a vnode.
+ */
+struct afs_read {
+ loff_t pos; /* Where to start reading */
+ loff_t len; /* How much to read */
+ loff_t actual_len; /* How much we're actually getting */
+ atomic_t usage;
+ unsigned int remain; /* Amount remaining */
+ unsigned int index; /* Which page we're reading into */
+ unsigned int pg_offset; /* Offset in page we're at */
+ unsigned int nr_pages;
+ void (*page_done)(struct afs_call *, struct afs_read *);
+ struct page *pages[];
};
/*
@@ -494,6 +498,7 @@ extern const struct file_operations afs_file_operations;
extern int afs_open(struct inode *, struct file *);
extern int afs_release(struct inode *, struct file *);
extern int afs_page_filler(void *, struct page *);
+extern void afs_put_read(struct afs_read *);
/*
* flock.c
@@ -509,50 +514,37 @@ extern int afs_flock(struct file *, int, struct file_lock *);
*/
extern int afs_fs_fetch_file_status(struct afs_server *, struct key *,
struct afs_vnode *, struct afs_volsync *,
- const struct afs_wait_mode *);
-extern int afs_fs_give_up_callbacks(struct afs_server *,
- const struct afs_wait_mode *);
+ bool);
+extern int afs_fs_give_up_callbacks(struct afs_server *, bool);
extern int afs_fs_fetch_data(struct afs_server *, struct key *,
- struct afs_vnode *, off_t, size_t, struct page *,
- const struct afs_wait_mode *);
+ struct afs_vnode *, struct afs_read *, bool);
extern int afs_fs_create(struct afs_server *, struct key *,
struct afs_vnode *, const char *, umode_t,
struct afs_fid *, struct afs_file_status *,
- struct afs_callback *,
- const struct afs_wait_mode *);
+ struct afs_callback *, bool);
extern int afs_fs_remove(struct afs_server *, struct key *,
- struct afs_vnode *, const char *, bool,
- const struct afs_wait_mode *);
+ struct afs_vnode *, const char *, bool, bool);
extern int afs_fs_link(struct afs_server *, struct key *, struct afs_vnode *,
- struct afs_vnode *, const char *,
- const struct afs_wait_mode *);
+ struct afs_vnode *, const char *, bool);
extern int afs_fs_symlink(struct afs_server *, struct key *,
struct afs_vnode *, const char *, const char *,
- struct afs_fid *, struct afs_file_status *,
- const struct afs_wait_mode *);
+ struct afs_fid *, struct afs_file_status *, bool);
extern int afs_fs_rename(struct afs_server *, struct key *,
struct afs_vnode *, const char *,
- struct afs_vnode *, const char *,
- const struct afs_wait_mode *);
+ struct afs_vnode *, const char *, bool);
extern int afs_fs_store_data(struct afs_server *, struct afs_writeback *,
- pgoff_t, pgoff_t, unsigned, unsigned,
- const struct afs_wait_mode *);
+ pgoff_t, pgoff_t, unsigned, unsigned, bool);
extern int afs_fs_setattr(struct afs_server *, struct key *,
- struct afs_vnode *, struct iattr *,
- const struct afs_wait_mode *);
+ struct afs_vnode *, struct iattr *, bool);
extern int afs_fs_get_volume_status(struct afs_server *, struct key *,
struct afs_vnode *,
- struct afs_volume_status *,
- const struct afs_wait_mode *);
+ struct afs_volume_status *, bool);
extern int afs_fs_set_lock(struct afs_server *, struct key *,
- struct afs_vnode *, afs_lock_type_t,
- const struct afs_wait_mode *);
+ struct afs_vnode *, afs_lock_type_t, bool);
extern int afs_fs_extend_lock(struct afs_server *, struct key *,
- struct afs_vnode *,
- const struct afs_wait_mode *);
+ struct afs_vnode *, bool);
extern int afs_fs_release_lock(struct afs_server *, struct key *,
- struct afs_vnode *,
- const struct afs_wait_mode *);
+ struct afs_vnode *, bool);
/*
* inode.c
@@ -603,11 +595,13 @@ extern void afs_proc_cell_remove(struct afs_cell *);
* rxrpc.c
*/
extern struct socket *afs_socket;
+extern atomic_t afs_outstanding_calls;
extern int afs_open_socket(void);
extern void afs_close_socket(void);
-extern int afs_make_call(struct in_addr *, struct afs_call *, gfp_t,
- const struct afs_wait_mode *);
+extern void afs_put_call(struct afs_call *);
+extern int afs_queue_call_work(struct afs_call *);
+extern int afs_make_call(struct in_addr *, struct afs_call *, gfp_t, bool);
extern struct afs_call *afs_alloc_flat_call(const struct afs_call_type *,
size_t, size_t);
extern void afs_flat_call_destructor(struct afs_call *);
@@ -663,11 +657,10 @@ extern int afs_get_MAC_address(u8 *, size_t);
*/
extern int afs_vl_get_entry_by_name(struct in_addr *, struct key *,
const char *, struct afs_cache_vlocation *,
- const struct afs_wait_mode *);
+ bool);
extern int afs_vl_get_entry_by_id(struct in_addr *, struct key *,
afs_volid_t, afs_voltype_t,
- struct afs_cache_vlocation *,
- const struct afs_wait_mode *);
+ struct afs_cache_vlocation *, bool);
/*
* vlocation.c
@@ -699,7 +692,7 @@ extern void afs_vnode_finalise_status_update(struct afs_vnode *,
extern int afs_vnode_fetch_status(struct afs_vnode *, struct afs_vnode *,
struct key *);
extern int afs_vnode_fetch_data(struct afs_vnode *, struct key *,
- off_t, size_t, struct page *);
+ struct afs_read *);
extern int afs_vnode_create(struct afs_vnode *, struct key *, const char *,
umode_t, struct afs_fid *, struct afs_file_status *,
struct afs_callback *, struct afs_server **);
@@ -756,6 +749,8 @@ extern int afs_fsync(struct file *, loff_t, loff_t, int);
/*
* debug tracing
*/
+#include <trace/events/afs.h>
+
extern unsigned afs_debug;
#define dbgprintk(FMT,...) \
diff --git a/fs/afs/main.c b/fs/afs/main.c
index 0b187ef3b5b7..f8188feb03ad 100644
--- a/fs/afs/main.c
+++ b/fs/afs/main.c
@@ -15,6 +15,7 @@
#include <linux/completion.h>
#include <linux/sched.h>
#include <linux/random.h>
+#define CREATE_TRACE_POINTS
#include "internal.h"
MODULE_DESCRIPTION("AFS Client File System");
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index 25f05a8d21b1..95f42872b787 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -19,35 +19,16 @@
struct socket *afs_socket; /* my RxRPC socket */
static struct workqueue_struct *afs_async_calls;
static struct afs_call *afs_spare_incoming_call;
-static atomic_t afs_outstanding_calls;
+atomic_t afs_outstanding_calls;
-static void afs_free_call(struct afs_call *);
static void afs_wake_up_call_waiter(struct sock *, struct rxrpc_call *, unsigned long);
static int afs_wait_for_call_to_complete(struct afs_call *);
static void afs_wake_up_async_call(struct sock *, struct rxrpc_call *, unsigned long);
-static int afs_dont_wait_for_call_to_complete(struct afs_call *);
static void afs_process_async_call(struct work_struct *);
static void afs_rx_new_call(struct sock *, struct rxrpc_call *, unsigned long);
static void afs_rx_discard_new_call(struct rxrpc_call *, unsigned long);
static int afs_deliver_cm_op_id(struct afs_call *);
-/* synchronous call management */
-const struct afs_wait_mode afs_sync_call = {
- .notify_rx = afs_wake_up_call_waiter,
- .wait = afs_wait_for_call_to_complete,
-};
-
-/* asynchronous call management */
-const struct afs_wait_mode afs_async_call = {
- .notify_rx = afs_wake_up_async_call,
- .wait = afs_dont_wait_for_call_to_complete,
-};
-
-/* asynchronous incoming call management */
-static const struct afs_wait_mode afs_async_incoming_call = {
- .notify_rx = afs_wake_up_async_call,
-};
-
/* asynchronous incoming call initial processing */
static const struct afs_call_type afs_RXCMxxxx = {
.name = "CB.xxxx",
@@ -130,9 +111,11 @@ void afs_close_socket(void)
{
_enter("");
+ kernel_listen(afs_socket, 0);
+ flush_workqueue(afs_async_calls);
+
if (afs_spare_incoming_call) {
- atomic_inc(&afs_outstanding_calls);
- afs_free_call(afs_spare_incoming_call);
+ afs_put_call(afs_spare_incoming_call);
afs_spare_incoming_call = NULL;
}
@@ -141,7 +124,6 @@ void afs_close_socket(void)
TASK_UNINTERRUPTIBLE);
_debug("no outstanding calls");
- flush_workqueue(afs_async_calls);
kernel_sock_shutdown(afs_socket, SHUT_RDWR);
flush_workqueue(afs_async_calls);
sock_release(afs_socket);
@@ -152,44 +134,79 @@ void afs_close_socket(void)
}
/*
- * free a call
+ * Allocate a call.
*/
-static void afs_free_call(struct afs_call *call)
+static struct afs_call *afs_alloc_call(const struct afs_call_type *type,
+ gfp_t gfp)
{
- _debug("DONE %p{%s} [%d]",
- call, call->type->name, atomic_read(&afs_outstanding_calls));
+ struct afs_call *call;
+ int o;
- ASSERTCMP(call->rxcall, ==, NULL);
- ASSERT(!work_pending(&call->async_work));
- ASSERT(call->type->name != NULL);
+ call = kzalloc(sizeof(*call), gfp);
+ if (!call)
+ return NULL;
- kfree(call->request);
- kfree(call);
+ call->type = type;
+ atomic_set(&call->usage, 1);
+ INIT_WORK(&call->async_work, afs_process_async_call);
+ init_waitqueue_head(&call->waitq);
- if (atomic_dec_and_test(&afs_outstanding_calls))
- wake_up_atomic_t(&afs_outstanding_calls);
+ o = atomic_inc_return(&afs_outstanding_calls);
+ trace_afs_call(call, afs_call_trace_alloc, 1, o,
+ __builtin_return_address(0));
+ return call;
}
/*
- * End a call but do not free it
+ * Dispose of a reference on a call.
*/
-static void afs_end_call_nofree(struct afs_call *call)
+void afs_put_call(struct afs_call *call)
{
- if (call->rxcall) {
- rxrpc_kernel_end_call(afs_socket, call->rxcall);
- call->rxcall = NULL;
+ int n = atomic_dec_return(&call->usage);
+ int o = atomic_read(&afs_outstanding_calls);
+
+ trace_afs_call(call, afs_call_trace_put, n + 1, o,
+ __builtin_return_address(0));
+
+ ASSERTCMP(n, >=, 0);
+ if (n == 0) {
+ ASSERT(!work_pending(&call->async_work));
+ ASSERT(call->type->name != NULL);
+
+ if (call->rxcall) {
+ rxrpc_kernel_end_call(afs_socket, call->rxcall);
+ call->rxcall = NULL;
+ }
+ if (call->type->destructor)
+ call->type->destructor(call);
+
+ kfree(call->request);
+ kfree(call);
+
+ o = atomic_dec_return(&afs_outstanding_calls);
+ trace_afs_call(call, afs_call_trace_free, 0, o,
+ __builtin_return_address(0));
+ if (o == 0)
+ wake_up_atomic_t(&afs_outstanding_calls);
}
- if (call->type->destructor)
- call->type->destructor(call);
}
/*
- * End a call and free it
+ * Queue the call for actual work. Returns 0 unconditionally for convenience.
*/
-static void afs_end_call(struct afs_call *call)
+int afs_queue_call_work(struct afs_call *call)
{
- afs_end_call_nofree(call);
- afs_free_call(call);
+ int u = atomic_inc_return(&call->usage);
+
+ trace_afs_call(call, afs_call_trace_work, u,
+ atomic_read(&afs_outstanding_calls),
+ __builtin_return_address(0));
+
+ INIT_WORK(&call->work, call->type->work);
+
+ if (!queue_work(afs_wq, &call->work))
+ afs_put_call(call);
+ return 0;
}
/*
@@ -200,25 +217,19 @@ struct afs_call *afs_alloc_flat_call(const struct afs_call_type *type,
{
struct afs_call *call;
- call = kzalloc(sizeof(*call), GFP_NOFS);
+ call = afs_alloc_call(type, GFP_NOFS);
if (!call)
goto nomem_call;
- _debug("CALL %p{%s} [%d]",
- call, type->name, atomic_read(&afs_outstanding_calls));
- atomic_inc(&afs_outstanding_calls);
-
- call->type = type;
- call->request_size = request_size;
- call->reply_max = reply_max;
-
if (request_size) {
+ call->request_size = request_size;
call->request = kmalloc(request_size, GFP_NOFS);
if (!call->request)
goto nomem_free;
}
if (reply_max) {
+ call->reply_max = reply_max;
call->buffer = kmalloc(reply_max, GFP_NOFS);
if (!call->buffer)
goto nomem_free;
@@ -228,7 +239,7 @@ struct afs_call *afs_alloc_flat_call(const struct afs_call_type *type,
return call;
nomem_free:
- afs_free_call(call);
+ afs_put_call(call);
nomem_call:
return NULL;
}
@@ -315,7 +326,7 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg,
* initiate a call
*/
int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct sockaddr_rxrpc srx;
struct rxrpc_call *rxcall;
@@ -332,8 +343,7 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp,
call, call->type->name, key_serial(call->key),
atomic_read(&afs_outstanding_calls));
- call->wait_mode = wait_mode;
- INIT_WORK(&call->async_work, afs_process_async_call);
+ call->async = async;
memset(&srx, 0, sizeof(srx));
srx.srx_family = AF_RXRPC;
@@ -347,7 +357,9 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp,
/* create a call */
rxcall = rxrpc_kernel_begin_call(afs_socket, &srx, call->key,
(unsigned long) call, gfp,
- wait_mode->notify_rx);
+ (async ?
+ afs_wake_up_async_call :
+ afs_wake_up_call_waiter));
call->key = NULL;
if (IS_ERR(rxcall)) {
ret = PTR_ERR(rxcall);
@@ -386,12 +398,15 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp,
/* at this point, an async call may no longer exist as it may have
* already completed */
- return wait_mode->wait(call);
+ if (call->async)
+ return -EINPROGRESS;
+
+ return afs_wait_for_call_to_complete(call);
error_do_abort:
rxrpc_kernel_abort_call(afs_socket, rxcall, RX_USER_ABORT, -ret, "KSD");
error_kill_call:
- afs_end_call(call);
+ afs_put_call(call);
_leave(" = %d", ret);
return ret;
}
@@ -416,6 +431,8 @@ static void afs_deliver_to_call(struct afs_call *call)
ret = rxrpc_kernel_recv_data(afs_socket, call->rxcall,
NULL, 0, &offset, false,
&call->abort_code);
+ trace_afs_recv_data(call, 0, offset, false, ret);
+
if (ret == -EINPROGRESS || ret == -EAGAIN)
return;
if (ret == 1 || ret < 0) {
@@ -459,7 +476,7 @@ static void afs_deliver_to_call(struct afs_call *call)
done:
if (call->state == AFS_CALL_COMPLETE && call->incoming)
- afs_end_call(call);
+ afs_put_call(call);
out:
_leave("");
return;
@@ -516,7 +533,7 @@ static int afs_wait_for_call_to_complete(struct afs_call *call)
}
_debug("call complete");
- afs_end_call(call);
+ afs_put_call(call);
_leave(" = %d", ret);
return ret;
}
@@ -540,24 +557,25 @@ static void afs_wake_up_async_call(struct sock *sk, struct rxrpc_call *rxcall,
unsigned long call_user_ID)
{
struct afs_call *call = (struct afs_call *)call_user_ID;
+ int u;
+ trace_afs_notify_call(rxcall, call);
call->need_attention = true;
- queue_work(afs_async_calls, &call->async_work);
-}
-/*
- * put a call into asynchronous mode
- * - mustn't touch the call descriptor as the call my have completed by the
- * time we get here
- */
-static int afs_dont_wait_for_call_to_complete(struct afs_call *call)
-{
- _enter("");
- return -EINPROGRESS;
+ u = __atomic_add_unless(&call->usage, 1, 0);
+ if (u != 0) {
+ trace_afs_call(call, afs_call_trace_wake, u,
+ atomic_read(&afs_outstanding_calls),
+ __builtin_return_address(0));
+
+ if (!queue_work(afs_async_calls, &call->async_work))
+ afs_put_call(call);
+ }
}
/*
- * delete an asynchronous call
+ * Delete an asynchronous call. The work item carries a ref to the call struct
+ * that we need to release.
*/
static void afs_delete_async_call(struct work_struct *work)
{
@@ -565,13 +583,14 @@ static void afs_delete_async_call(struct work_struct *work)
_enter("");
- afs_free_call(call);
+ afs_put_call(call);
_leave("");
}
/*
- * perform processing on an asynchronous call
+ * Perform I/O processing on an asynchronous call. The work item carries a ref
+ * to the call struct that we either need to release or to pass on.
*/
static void afs_process_async_call(struct work_struct *work)
{
@@ -584,21 +603,19 @@ static void afs_process_async_call(struct work_struct *work)
afs_deliver_to_call(call);
}
- if (call->state == AFS_CALL_COMPLETE && call->wait_mode) {
- if (call->wait_mode->async_complete)
- call->wait_mode->async_complete(call->reply,
- call->error);
+ if (call->state == AFS_CALL_COMPLETE) {
call->reply = NULL;
- /* kill the call */
- afs_end_call_nofree(call);
-
- /* we can't just delete the call because the work item may be
- * queued */
+ /* We have two refs to release - one from the alloc and one
+ * queued with the work item - and we can't just deallocate the
+ * call because the work item may be queued again.
+ */
call->async_work.func = afs_delete_async_call;
- queue_work(afs_async_calls, &call->async_work);
+ if (!queue_work(afs_async_calls, &call->async_work))
+ afs_put_call(call);
}
+ afs_put_call(call);
_leave("");
}
@@ -618,15 +635,13 @@ static void afs_charge_preallocation(struct work_struct *work)
for (;;) {
if (!call) {
- call = kzalloc(sizeof(struct afs_call), GFP_KERNEL);
+ call = afs_alloc_call(&afs_RXCMxxxx, GFP_KERNEL);
if (!call)
break;
- INIT_WORK(&call->async_work, afs_process_async_call);
- call->wait_mode = &afs_async_incoming_call;
- call->type = &afs_RXCMxxxx;
- init_waitqueue_head(&call->waitq);
+ call->async = true;
call->state = AFS_CALL_AWAIT_OP_ID;
+ init_waitqueue_head(&call->waitq);
}
if (rxrpc_kernel_charge_accept(afs_socket,
@@ -648,9 +663,8 @@ static void afs_rx_discard_new_call(struct rxrpc_call *rxcall,
{
struct afs_call *call = (struct afs_call *)user_call_ID;
- atomic_inc(&afs_outstanding_calls);
call->rxcall = NULL;
- afs_free_call(call);
+ afs_put_call(call);
}
/*
@@ -659,7 +673,6 @@ static void afs_rx_discard_new_call(struct rxrpc_call *rxcall,
static void afs_rx_new_call(struct sock *sk, struct rxrpc_call *rxcall,
unsigned long user_call_ID)
{
- atomic_inc(&afs_outstanding_calls);
queue_work(afs_wq, &afs_charge_preallocation_work);
}
@@ -689,6 +702,8 @@ static int afs_deliver_cm_op_id(struct afs_call *call)
if (!afs_cm_incoming_call(call))
return -ENOTSUPP;
+ trace_afs_cb_call(call);
+
/* pass responsibility for the remainer of this message off to the
* cache manager op */
return call->type->deliver(call);
@@ -721,7 +736,6 @@ void afs_send_empty_reply(struct afs_call *call)
rxrpc_kernel_abort_call(afs_socket, call->rxcall,
RX_USER_ABORT, ENOMEM, "KOO");
default:
- afs_end_call(call);
_leave(" [error]");
return;
}
@@ -760,7 +774,6 @@ void afs_send_simple_reply(struct afs_call *call, const void *buf, size_t len)
rxrpc_kernel_abort_call(afs_socket, call->rxcall,
RX_USER_ABORT, ENOMEM, "KOO");
}
- afs_end_call(call);
_leave(" [error]");
}
@@ -780,6 +793,7 @@ int afs_extract_data(struct afs_call *call, void *buf, size_t count,
ret = rxrpc_kernel_recv_data(afs_socket, call->rxcall,
buf, count, &call->offset,
want_more, &call->abort_code);
+ trace_afs_recv_data(call, count, call->offset, want_more, ret);
if (ret == 0 || ret == -EAGAIN)
return ret;
diff --git a/fs/afs/vlclient.c b/fs/afs/vlclient.c
index 94bcd97d22b8..a5e4cc561b6c 100644
--- a/fs/afs/vlclient.c
+++ b/fs/afs/vlclient.c
@@ -147,7 +147,7 @@ int afs_vl_get_entry_by_name(struct in_addr *addr,
struct key *key,
const char *volname,
struct afs_cache_vlocation *entry,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
size_t volnamesz, reqsz, padsz;
@@ -177,7 +177,7 @@ int afs_vl_get_entry_by_name(struct in_addr *addr,
memset((void *) bp + volnamesz, 0, padsz);
/* initiate the call */
- return afs_make_call(addr, call, GFP_KERNEL, wait_mode);
+ return afs_make_call(addr, call, GFP_KERNEL, async);
}
/*
@@ -188,7 +188,7 @@ int afs_vl_get_entry_by_id(struct in_addr *addr,
afs_volid_t volid,
afs_voltype_t voltype,
struct afs_cache_vlocation *entry,
- const struct afs_wait_mode *wait_mode)
+ bool async)
{
struct afs_call *call;
__be32 *bp;
@@ -211,5 +211,5 @@ int afs_vl_get_entry_by_id(struct in_addr *addr,
*bp = htonl(voltype);
/* initiate the call */
- return afs_make_call(addr, call, GFP_KERNEL, wait_mode);
+ return afs_make_call(addr, call, GFP_KERNEL, async);
}
diff --git a/fs/afs/vlocation.c b/fs/afs/vlocation.c
index 45a86396fd2d..d7d8dd8c0b31 100644
--- a/fs/afs/vlocation.c
+++ b/fs/afs/vlocation.c
@@ -53,7 +53,7 @@ static int afs_vlocation_access_vl_by_name(struct afs_vlocation *vl,
/* attempt to access the VL server */
ret = afs_vl_get_entry_by_name(&addr, key, vl->vldb.name, vldb,
- &afs_sync_call);
+ false);
switch (ret) {
case 0:
goto out;
@@ -111,7 +111,7 @@ static int afs_vlocation_access_vl_by_id(struct afs_vlocation *vl,
/* attempt to access the VL server */
ret = afs_vl_get_entry_by_id(&addr, key, volid, voltype, vldb,
- &afs_sync_call);
+ false);
switch (ret) {
case 0:
goto out;
diff --git a/fs/afs/vnode.c b/fs/afs/vnode.c
index 25cf4c3f4ff7..dcb956143c86 100644
--- a/fs/afs/vnode.c
+++ b/fs/afs/vnode.c
@@ -358,7 +358,7 @@ get_anyway:
server, ntohl(server->addr.s_addr));
ret = afs_fs_fetch_file_status(server, key, vnode, NULL,
- &afs_sync_call);
+ false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
@@ -393,7 +393,7 @@ no_server:
* - TODO implement caching
*/
int afs_vnode_fetch_data(struct afs_vnode *vnode, struct key *key,
- off_t offset, size_t length, struct page *page)
+ struct afs_read *desc)
{
struct afs_server *server;
int ret;
@@ -420,8 +420,8 @@ int afs_vnode_fetch_data(struct afs_vnode *vnode, struct key *key,
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
- ret = afs_fs_fetch_data(server, key, vnode, offset, length,
- page, &afs_sync_call);
+ ret = afs_fs_fetch_data(server, key, vnode, desc,
+ false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
@@ -477,7 +477,7 @@ int afs_vnode_create(struct afs_vnode *vnode, struct key *key,
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
ret = afs_fs_create(server, key, vnode, name, mode, newfid,
- newstatus, newcb, &afs_sync_call);
+ newstatus, newcb, false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
@@ -533,7 +533,7 @@ int afs_vnode_remove(struct afs_vnode *vnode, struct key *key, const char *name,
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
ret = afs_fs_remove(server, key, vnode, name, isdir,
- &afs_sync_call);
+ false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
@@ -595,7 +595,7 @@ int afs_vnode_link(struct afs_vnode *dvnode, struct afs_vnode *vnode,
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
ret = afs_fs_link(server, key, dvnode, vnode, name,
- &afs_sync_call);
+ false);
} while (!afs_volume_release_fileserver(dvnode, server, ret));
@@ -659,7 +659,7 @@ int afs_vnode_symlink(struct afs_vnode *vnode, struct key *key,
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
ret = afs_fs_symlink(server, key, vnode, name, content,
- newfid, newstatus, &afs_sync_call);
+ newfid, newstatus, false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
@@ -729,7 +729,7 @@ int afs_vnode_rename(struct afs_vnode *orig_dvnode,
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
ret = afs_fs_rename(server, key, orig_dvnode, orig_name,
- new_dvnode, new_name, &afs_sync_call);
+ new_dvnode, new_name, false);
} while (!afs_volume_release_fileserver(orig_dvnode, server, ret));
@@ -795,7 +795,7 @@ int afs_vnode_store_data(struct afs_writeback *wb, pgoff_t first, pgoff_t last,
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
ret = afs_fs_store_data(server, wb, first, last, offset, to,
- &afs_sync_call);
+ false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
@@ -847,7 +847,7 @@ int afs_vnode_setattr(struct afs_vnode *vnode, struct key *key,
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
- ret = afs_fs_setattr(server, key, vnode, attr, &afs_sync_call);
+ ret = afs_fs_setattr(server, key, vnode, attr, false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
@@ -894,7 +894,7 @@ int afs_vnode_get_volume_status(struct afs_vnode *vnode, struct key *key,
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
- ret = afs_fs_get_volume_status(server, key, vnode, vs, &afs_sync_call);
+ ret = afs_fs_get_volume_status(server, key, vnode, vs, false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
@@ -933,7 +933,7 @@ int afs_vnode_set_lock(struct afs_vnode *vnode, struct key *key,
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
- ret = afs_fs_set_lock(server, key, vnode, type, &afs_sync_call);
+ ret = afs_fs_set_lock(server, key, vnode, type, false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
@@ -971,7 +971,7 @@ int afs_vnode_extend_lock(struct afs_vnode *vnode, struct key *key)
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
- ret = afs_fs_extend_lock(server, key, vnode, &afs_sync_call);
+ ret = afs_fs_extend_lock(server, key, vnode, false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
@@ -1009,7 +1009,7 @@ int afs_vnode_release_lock(struct afs_vnode *vnode, struct key *key)
_debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
- ret = afs_fs_release_lock(server, key, vnode, &afs_sync_call);
+ ret = afs_fs_release_lock(server, key, vnode, false);
} while (!afs_volume_release_fileserver(vnode, server, ret));
diff --git a/fs/afs/volume.c b/fs/afs/volume.c
index d142a2449e65..546f9d01710b 100644
--- a/fs/afs/volume.c
+++ b/fs/afs/volume.c
@@ -106,6 +106,7 @@ struct afs_volume *afs_volume_lookup(struct afs_mount_params *params)
volume->cell = params->cell;
volume->vid = vlocation->vldb.vid[params->type];
+ volume->bdi.ra_pages = VM_MAX_READAHEAD*1024/PAGE_SIZE;
ret = bdi_setup_and_register(&volume->bdi, "afs");
if (ret)
goto error_bdi;
diff --git a/fs/afs/write.c b/fs/afs/write.c
index f865c3f05bea..c83c1a0e851f 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -86,19 +86,30 @@ void afs_put_writeback(struct afs_writeback *wb)
static int afs_fill_page(struct afs_vnode *vnode, struct key *key,
loff_t pos, struct page *page)
{
+ struct afs_read *req;
loff_t i_size;
int ret;
- int len;
_enter(",,%llu", (unsigned long long)pos);
+ req = kzalloc(sizeof(struct afs_read) + sizeof(struct page *),
+ GFP_KERNEL);
+ if (!req)
+ return -ENOMEM;
+
+ atomic_set(&req->usage, 1);
+ req->pos = pos;
+ req->nr_pages = 1;
+ req->pages[0] = page;
+
i_size = i_size_read(&vnode->vfs_inode);
if (pos + PAGE_SIZE > i_size)
- len = i_size - pos;
+ req->len = i_size - pos;
else
- len = PAGE_SIZE;
+ req->len = PAGE_SIZE;
- ret = afs_vnode_fetch_data(vnode, key, pos, len, page);
+ ret = afs_vnode_fetch_data(vnode, key, req);
+ afs_put_read(req);
if (ret < 0) {
if (ret == -ENOENT) {
_debug("got NOENT from server"
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 03:24:59 +0100