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Merge 6.1.58 into android14-6.1-lts

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Changes in 6.1.58
	Revert "NFS: More fixes for nfs_direct_write_reschedule_io()"
	Revert "NFS: Use the correct commit info in nfs_join_page_group()"
	Revert "NFS: More O_DIRECT accounting fixes for error paths"
	Revert "NFS: Fix O_DIRECT locking issues"
	Revert "NFS: Fix error handling for O_DIRECT write scheduling"
	lib/test_meminit: fix off-by-one error in test_pages()
	Linux 6.1.58

Change-Id: I4022c198204b94b8846aa347404d8d9d26eb9a63
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman 2023-10-26 19:07:47 +00:00
commit d58a224aca
4 changed files with 56 additions and 111 deletions
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2
Makefile
View File

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 6
PATCHLEVEL = 1
SUBLEVEL = 57
SUBLEVEL = 58
EXTRAVERSION =
NAME = Curry Ramen

138
fs/nfs/direct.c
View File

@ -93,10 +93,12 @@ nfs_direct_handle_truncated(struct nfs_direct_req *dreq,
dreq->max_count = dreq_len;
if (dreq->count > dreq_len)
dreq->count = dreq_len;
}
if (test_bit(NFS_IOHDR_ERROR, &hdr->flags) && !dreq->error)
dreq->error = hdr->error;
if (test_bit(NFS_IOHDR_ERROR, &hdr->flags))
dreq->error = hdr->error;
else /* Clear outstanding error if this is EOF */
dreq->error = 0;
}
}
static void
@ -118,18 +120,6 @@ nfs_direct_count_bytes(struct nfs_direct_req *dreq,
dreq->count = dreq_len;
}
static void nfs_direct_truncate_request(struct nfs_direct_req *dreq,
struct nfs_page *req)
{
loff_t offs = req_offset(req);
size_t req_start = (size_t)(offs - dreq->io_start);
if (req_start < dreq->max_count)
dreq->max_count = req_start;
if (req_start < dreq->count)
dreq->count = req_start;
}
/**
* nfs_swap_rw - NFS address space operation for swap I/O
* @iocb: target I/O control block
@ -500,9 +490,7 @@ static void nfs_direct_add_page_head(struct list_head *list,
kref_get(&head->wb_kref);
}
static void nfs_direct_join_group(struct list_head *list,
struct nfs_commit_info *cinfo,
struct inode *inode)
static void nfs_direct_join_group(struct list_head *list, struct inode *inode)
{
struct nfs_page *req, *subreq;
@ -524,7 +512,7 @@ static void nfs_direct_join_group(struct list_head *list,
nfs_release_request(subreq);
}
} while ((subreq = subreq->wb_this_page) != req);
nfs_join_page_group(req, cinfo, inode);
nfs_join_page_group(req, inode);
}
}
@ -542,15 +530,20 @@ nfs_direct_write_scan_commit_list(struct inode *inode,
static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
{
struct nfs_pageio_descriptor desc;
struct nfs_page *req;
struct nfs_page *req, *tmp;
LIST_HEAD(reqs);
struct nfs_commit_info cinfo;
LIST_HEAD(failed);
nfs_init_cinfo_from_dreq(&cinfo, dreq);
nfs_direct_write_scan_commit_list(dreq->inode, &reqs, &cinfo);
nfs_direct_join_group(&reqs, &cinfo, dreq->inode);
nfs_direct_join_group(&reqs, dreq->inode);
dreq->count = 0;
dreq->max_count = 0;
list_for_each_entry(req, &reqs, wb_list)
dreq->max_count += req->wb_bytes;
nfs_clear_pnfs_ds_commit_verifiers(&dreq->ds_cinfo);
get_dreq(dreq);
@ -558,40 +551,27 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
&nfs_direct_write_completion_ops);
desc.pg_dreq = dreq;
while (!list_empty(&reqs)) {
req = nfs_list_entry(reqs.next);
list_for_each_entry_safe(req, tmp, &reqs, wb_list) {
/* Bump the transmission count */
req->wb_nio++;
if (!nfs_pageio_add_request(&desc, req)) {
spin_lock(&dreq->lock);
if (dreq->error < 0) {
desc.pg_error = dreq->error;
} else if (desc.pg_error != -EAGAIN) {
dreq->flags = 0;
if (!desc.pg_error)
desc.pg_error = -EIO;
nfs_list_move_request(req, &failed);
spin_lock(&cinfo.inode->i_lock);
dreq->flags = 0;
if (desc.pg_error < 0)
dreq->error = desc.pg_error;
} else
dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
spin_unlock(&dreq->lock);
break;
else
dreq->error = -EIO;
spin_unlock(&cinfo.inode->i_lock);
}
nfs_release_request(req);
}
nfs_pageio_complete(&desc);
while (!list_empty(&reqs)) {
req = nfs_list_entry(reqs.next);
while (!list_empty(&failed)) {
req = nfs_list_entry(failed.next);
nfs_list_remove_request(req);
nfs_unlock_and_release_request(req);
if (desc.pg_error == -EAGAIN) {
nfs_mark_request_commit(req, NULL, &cinfo, 0);
} else {
spin_lock(&dreq->lock);
nfs_direct_truncate_request(dreq, req);
spin_unlock(&dreq->lock);
nfs_release_request(req);
}
}
if (put_dreq(dreq))
@ -611,6 +591,8 @@ static void nfs_direct_commit_complete(struct nfs_commit_data *data)
if (status < 0) {
/* Errors in commit are fatal */
dreq->error = status;
dreq->max_count = 0;
dreq->count = 0;
dreq->flags = NFS_ODIRECT_DONE;
} else {
status = dreq->error;
@ -621,12 +603,7 @@ static void nfs_direct_commit_complete(struct nfs_commit_data *data)
while (!list_empty(&data->pages)) {
req = nfs_list_entry(data->pages.next);
nfs_list_remove_request(req);
if (status < 0) {
spin_lock(&dreq->lock);
nfs_direct_truncate_request(dreq, req);
spin_unlock(&dreq->lock);
nfs_release_request(req);
} else if (!nfs_write_match_verf(verf, req)) {
if (status >= 0 && !nfs_write_match_verf(verf, req)) {
dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
/*
* Despite the reboot, the write was successful,
@ -634,7 +611,7 @@ static void nfs_direct_commit_complete(struct nfs_commit_data *data)
*/
req->wb_nio = 0;
nfs_mark_request_commit(req, NULL, &cinfo, 0);
} else
} else /* Error or match */
nfs_release_request(req);
nfs_unlock_and_release_request(req);
}
@ -687,7 +664,6 @@ static void nfs_direct_write_clear_reqs(struct nfs_direct_req *dreq)
while (!list_empty(&reqs)) {
req = nfs_list_entry(reqs.next);
nfs_list_remove_request(req);
nfs_direct_truncate_request(dreq, req);
nfs_release_request(req);
nfs_unlock_and_release_request(req);
}
@ -737,8 +713,7 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
}
nfs_direct_count_bytes(dreq, hdr);
if (test_bit(NFS_IOHDR_UNSTABLE_WRITES, &hdr->flags) &&
!test_bit(NFS_IOHDR_ERROR, &hdr->flags)) {
if (test_bit(NFS_IOHDR_UNSTABLE_WRITES, &hdr->flags)) {
if (!dreq->flags)
dreq->flags = NFS_ODIRECT_DO_COMMIT;
flags = dreq->flags;
@ -782,23 +757,18 @@ static void nfs_write_sync_pgio_error(struct list_head *head, int error)
static void nfs_direct_write_reschedule_io(struct nfs_pgio_header *hdr)
{
struct nfs_direct_req *dreq = hdr->dreq;
struct nfs_page *req;
struct nfs_commit_info cinfo;
trace_nfs_direct_write_reschedule_io(dreq);
nfs_init_cinfo_from_dreq(&cinfo, dreq);
spin_lock(&dreq->lock);
if (dreq->error == 0)
if (dreq->error == 0) {
dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
set_bit(NFS_IOHDR_REDO, &hdr->flags);
spin_unlock(&dreq->lock);
while (!list_empty(&hdr->pages)) {
req = nfs_list_entry(hdr->pages.next);
nfs_list_remove_request(req);
nfs_unlock_request(req);
nfs_mark_request_commit(req, NULL, &cinfo, 0);
/* fake unstable write to let common nfs resend pages */
hdr->verf.committed = NFS_UNSTABLE;
hdr->good_bytes = hdr->args.offset + hdr->args.count -
hdr->io_start;
}
spin_unlock(&dreq->lock);
}
static const struct nfs_pgio_completion_ops nfs_direct_write_completion_ops = {
@ -826,11 +796,9 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
{
struct nfs_pageio_descriptor desc;
struct inode *inode = dreq->inode;
struct nfs_commit_info cinfo;
ssize_t result = 0;
size_t requested_bytes = 0;
size_t wsize = max_t(size_t, NFS_SERVER(inode)->wsize, PAGE_SIZE);
bool defer = false;
trace_nfs_direct_write_schedule_iovec(dreq);
@ -871,39 +839,19 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
break;
}
nfs_lock_request(req);
req->wb_index = pos >> PAGE_SHIFT;
req->wb_offset = pos & ~PAGE_MASK;
if (!nfs_pageio_add_request(&desc, req)) {
result = desc.pg_error;
nfs_unlock_and_release_request(req);
break;
}
pgbase = 0;
bytes -= req_len;
requested_bytes += req_len;
pos += req_len;
dreq->bytes_left -= req_len;
if (defer) {
nfs_mark_request_commit(req, NULL, &cinfo, 0);
continue;
}
nfs_lock_request(req);
req->wb_index = pos >> PAGE_SHIFT;
req->wb_offset = pos & ~PAGE_MASK;
if (nfs_pageio_add_request(&desc, req))
continue;
/* Exit on hard errors */
if (desc.pg_error < 0 && desc.pg_error != -EAGAIN) {
result = desc.pg_error;
nfs_unlock_and_release_request(req);
break;
}
/* If the error is soft, defer remaining requests */
nfs_init_cinfo_from_dreq(&cinfo, dreq);
spin_lock(&dreq->lock);
dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
spin_unlock(&dreq->lock);
nfs_unlock_request(req);
nfs_mark_request_commit(req, NULL, &cinfo, 0);
desc.pg_error = 0;
defer = true;
}
nfs_direct_release_pages(pagevec, npages);
kvfree(pagevec);

23
fs/nfs/write.c
View File

@ -58,8 +58,7 @@ static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops;
static const struct nfs_commit_completion_ops nfs_commit_completion_ops;
static const struct nfs_rw_ops nfs_rw_write_ops;
static void nfs_inode_remove_request(struct nfs_page *req);
static void nfs_clear_request_commit(struct nfs_commit_info *cinfo,
struct nfs_page *req);
static void nfs_clear_request_commit(struct nfs_page *req);
static void nfs_init_cinfo_from_inode(struct nfs_commit_info *cinfo,
struct inode *inode);
static struct nfs_page *
@ -503,8 +502,8 @@ nfs_destroy_unlinked_subrequests(struct nfs_page *destroy_list,
* the (former) group. All subrequests are removed from any write or commit
* lists, unlinked from the group and destroyed.
*/
void nfs_join_page_group(struct nfs_page *head, struct nfs_commit_info *cinfo,
struct inode *inode)
void
nfs_join_page_group(struct nfs_page *head, struct inode *inode)
{
struct nfs_page *subreq;
struct nfs_page *destroy_list = NULL;
@ -534,7 +533,7 @@ void nfs_join_page_group(struct nfs_page *head, struct nfs_commit_info *cinfo,
* Commit list removal accounting is done after locks are dropped */
subreq = head;
do {
nfs_clear_request_commit(cinfo, subreq);
nfs_clear_request_commit(subreq);
subreq = subreq->wb_this_page;
} while (subreq != head);
@ -568,10 +567,8 @@ nfs_lock_and_join_requests(struct page *page)
{
struct inode *inode = page_file_mapping(page)->host;
struct nfs_page *head;
struct nfs_commit_info cinfo;
int ret;
nfs_init_cinfo_from_inode(&cinfo, inode);
/*
* A reference is taken only on the head request which acts as a
* reference to the whole page group - the group will not be destroyed
@ -588,7 +585,7 @@ nfs_lock_and_join_requests(struct page *page)
return ERR_PTR(ret);
}
nfs_join_page_group(head, &cinfo, inode);
nfs_join_page_group(head, inode);
return head;
}
@ -959,16 +956,18 @@ nfs_clear_page_commit(struct page *page)
}
/* Called holding the request lock on @req */
static void nfs_clear_request_commit(struct nfs_commit_info *cinfo,
struct nfs_page *req)
static void
nfs_clear_request_commit(struct nfs_page *req)
{
if (test_bit(PG_CLEAN, &req->wb_flags)) {
struct nfs_open_context *ctx = nfs_req_openctx(req);
struct inode *inode = d_inode(ctx->dentry);
struct nfs_commit_info cinfo;
nfs_init_cinfo_from_inode(&cinfo, inode);
mutex_lock(&NFS_I(inode)->commit_mutex);
if (!pnfs_clear_request_commit(req, cinfo)) {
nfs_request_remove_commit_list(req, cinfo);
if (!pnfs_clear_request_commit(req, &cinfo)) {
nfs_request_remove_commit_list(req, &cinfo);
}
mutex_unlock(&NFS_I(inode)->commit_mutex);
nfs_clear_page_commit(req->wb_page);

4
include/linux/nfs_page.h
View File

@ -145,9 +145,7 @@ extern void nfs_unlock_request(struct nfs_page *req);
extern void nfs_unlock_and_release_request(struct nfs_page *);
extern struct nfs_page *nfs_page_group_lock_head(struct nfs_page *req);
extern int nfs_page_group_lock_subrequests(struct nfs_page *head);
extern void nfs_join_page_group(struct nfs_page *head,
struct nfs_commit_info *cinfo,
struct inode *inode);
extern void nfs_join_page_group(struct nfs_page *head, struct inode *inode);
extern int nfs_page_group_lock(struct nfs_page *);
extern void nfs_page_group_unlock(struct nfs_page *);
extern bool nfs_page_group_sync_on_bit(struct nfs_page *, unsigned int);