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authorLinus Torvalds <torvalds@linux-foundation.org>2021-04-27 13:27:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-04-27 13:27:39 -0700
commitfafe1e39ed213221c0bce6b0b31669334368dc97 (patch)
tree154ccf523bb48002bca29c220f6351e55c8a619f /include/trace
parent820c4bae40cb56466cfed6409e00d0f5165a990c (diff)
parent3003bbd0697b659944237f3459489cb596ba196c (diff)
downloadlinux-fafe1e39ed213221c0bce6b0b31669334368dc97.tar.bz2
Merge tag 'afs-netfs-lib-20210426' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull AFS updates from David Howells: "Use the new netfs lib. Begin the process of overhauling the use of the fscache API by AFS and the introduction of support for features such as Transparent Huge Pages (THPs). - Add some support for THPs, including using core VM helper functions to find details of pages. - Use the ITER_XARRAY I/O iterator to mediate access to the pagecache as this handles THPs and doesn't require allocation of large bvec arrays. - Delegate address_space read/pre-write I/O methods for AFS to the netfs helper library. A method is provided to the library that allows it to issue a read against the server. This includes a change in use for PG_fscache (it now indicates a DIO write in progress from the marked page), so a number of waits need to be deployed for it. - Split the core AFS writeback function to make it easier to modify in future patches to handle writing to the cache. [This might feasibly make more sense moved out into my fscache-iter branch]. I've tested these with "xfstests -g quick" against an AFS volume (xfstests needs patching to make it work). With this, AFS without a cache passes all expected xfstests; with a cache, there's an extra failure, but that's also there before these patches. Fixing that probably requires a greater overhaul (as can be found on my fscache-iter branch, but that's for a later time). Thanks should go to Marc Dionne and Jeff Altman of AuriStor for exercising the patches in their test farm also" Link: https://lore.kernel.org/lkml/3785063.1619482429@warthog.procyon.org.uk/ * tag 'afs-netfs-lib-20210426' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: afs: Use the netfs_write_begin() helper afs: Use new netfs lib read helper API afs: Use the fs operation ops to handle FetchData completion afs: Prepare for use of THPs afs: Extract writeback extension into its own function afs: Wait on PG_fscache before modifying/releasing a page afs: Use ITER_XARRAY for writing afs: Set up the iov_iter before calling afs_extract_data() afs: Log remote unmarshalling errors afs: Don't truncate iter during data fetch afs: Move key to afs_read struct afs: Print the operation debug_id when logging an unexpected data version afs: Pass page into dirty region helpers to provide THP size afs: Disable use of the fscache I/O routines
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/afs.h74
1 files changed, 32 insertions, 42 deletions
diff --git a/include/trace/events/afs.h b/include/trace/events/afs.h
index 4a5cc8c64be3..3ccf591b2374 100644
--- a/include/trace/events/afs.h
+++ b/include/trace/events/afs.h
@@ -886,65 +886,52 @@ TRACE_EVENT(afs_call_done,
__entry->rx_call)
);
-TRACE_EVENT(afs_send_pages,
- TP_PROTO(struct afs_call *call, struct msghdr *msg,
- pgoff_t first, pgoff_t last, unsigned int offset),
+TRACE_EVENT(afs_send_data,
+ TP_PROTO(struct afs_call *call, struct msghdr *msg),
- TP_ARGS(call, msg, first, last, offset),
+ TP_ARGS(call, msg),
TP_STRUCT__entry(
__field(unsigned int, call )
- __field(pgoff_t, first )
- __field(pgoff_t, last )
- __field(unsigned int, nr )
- __field(unsigned int, bytes )
- __field(unsigned int, offset )
__field(unsigned int, flags )
+ __field(loff_t, offset )
+ __field(loff_t, count )
),
TP_fast_assign(
__entry->call = call->debug_id;
- __entry->first = first;
- __entry->last = last;
- __entry->nr = msg->msg_iter.nr_segs;
- __entry->bytes = msg->msg_iter.count;
- __entry->offset = offset;
__entry->flags = msg->msg_flags;
+ __entry->offset = msg->msg_iter.xarray_start + msg->msg_iter.iov_offset;
+ __entry->count = iov_iter_count(&msg->msg_iter);
),
- TP_printk(" c=%08x %lx-%lx-%lx b=%x o=%x f=%x",
- __entry->call,
- __entry->first, __entry->first + __entry->nr - 1, __entry->last,
- __entry->bytes, __entry->offset,
+ TP_printk(" c=%08x o=%llx n=%llx f=%x",
+ __entry->call, __entry->offset, __entry->count,
__entry->flags)
);
-TRACE_EVENT(afs_sent_pages,
- TP_PROTO(struct afs_call *call, pgoff_t first, pgoff_t last,
- pgoff_t cursor, int ret),
+TRACE_EVENT(afs_sent_data,
+ TP_PROTO(struct afs_call *call, struct msghdr *msg, int ret),
- TP_ARGS(call, first, last, cursor, ret),
+ TP_ARGS(call, msg, ret),
TP_STRUCT__entry(
__field(unsigned int, call )
- __field(pgoff_t, first )
- __field(pgoff_t, last )
- __field(pgoff_t, cursor )
__field(int, ret )
+ __field(loff_t, offset )
+ __field(loff_t, count )
),
TP_fast_assign(
__entry->call = call->debug_id;
- __entry->first = first;
- __entry->last = last;
- __entry->cursor = cursor;
__entry->ret = ret;
+ __entry->offset = msg->msg_iter.xarray_start + msg->msg_iter.iov_offset;
+ __entry->count = iov_iter_count(&msg->msg_iter);
),
- TP_printk(" c=%08x %lx-%lx c=%lx r=%d",
- __entry->call,
- __entry->first, __entry->last,
- __entry->cursor, __entry->ret)
+ TP_printk(" c=%08x o=%llx n=%llx r=%x",
+ __entry->call, __entry->offset, __entry->count,
+ __entry->ret)
);
TRACE_EVENT(afs_dir_check_failed,
@@ -969,30 +956,33 @@ TRACE_EVENT(afs_dir_check_failed,
);
TRACE_EVENT(afs_page_dirty,
- TP_PROTO(struct afs_vnode *vnode, const char *where,
- pgoff_t page, unsigned long priv),
+ TP_PROTO(struct afs_vnode *vnode, const char *where, struct page *page),
- TP_ARGS(vnode, where, page, priv),
+ TP_ARGS(vnode, where, page),
TP_STRUCT__entry(
__field(struct afs_vnode *, vnode )
__field(const char *, where )
__field(pgoff_t, page )
- __field(unsigned long, priv )
+ __field(unsigned long, from )
+ __field(unsigned long, to )
),
TP_fast_assign(
__entry->vnode = vnode;
__entry->where = where;
- __entry->page = page;
- __entry->priv = priv;
+ __entry->page = page->index;
+ __entry->from = afs_page_dirty_from(page, page->private);
+ __entry->to = afs_page_dirty_to(page, page->private);
+ __entry->to |= (afs_is_page_dirty_mmapped(page->private) ?
+ (1UL << (BITS_PER_LONG - 1)) : 0);
),
- TP_printk("vn=%p %lx %s %zx-%zx%s",
+ TP_printk("vn=%p %lx %s %lx-%lx%s",
__entry->vnode, __entry->page, __entry->where,
- afs_page_dirty_from(__entry->priv),
- afs_page_dirty_to(__entry->priv),
- afs_is_page_dirty_mmapped(__entry->priv) ? " M" : "")
+ __entry->from,
+ __entry->to & ~(1UL << (BITS_PER_LONG - 1)),
+ __entry->to & (1UL << (BITS_PER_LONG - 1)) ? " M" : "")
);
TRACE_EVENT(afs_call_state,