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| author | David Howells <dhowells@redhat.com> | 2023-10-02 12:51:19 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2023-12-28 09:45:22 +0000 |
| commit | 7f84a7b9892d1c9429a6f5d6f67916c61b3fc183 (patch) | |
| tree | e5234e5c233c8f3053ba02050336a2bf04eb7818 /include | |
| parent | c38f4e96e605f17990e871214e6ea1496bc4e65f (diff) | |
| download | linux-stable-7f84a7b9892d1c9429a6f5d6f67916c61b3fc183.tar.gz linux-stable-7f84a7b9892d1c9429a6f5d6f67916c61b3fc183.tar.bz2 linux-stable-7f84a7b9892d1c9429a6f5d6f67916c61b3fc183.zip | |
netfs: Make netfs_read_folio() handle streaming-write pages
netfs_read_folio() needs to handle partially-valid pages that are marked
dirty, but not uptodate in the event that someone tries to read a page was
used to cache data by a streaming write.
In such a case, make netfs_read_folio() set up a bvec iterator that points
to the parts of the folio that need filling and to a sink page for the data
that should be discarded and use that instead of i_pages as the iterator to
be written to.
This requires netfs_rreq_unlock_folios() to convert the page into a normal
dirty uptodate page, getting rid of the partial write record and bumping
the group pointer over to folio->private.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Diffstat (limited to 'include')
| -rw-r--r-- | include/trace/events/netfs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/trace/events/netfs.h b/include/trace/events/netfs.h index 8308b81f36be..082a5e717b58 100644 --- a/include/trace/events/netfs.h +++ b/include/trace/events/netfs.h @@ -118,9 +118,11 @@ EM(netfs_folio_trace_clear_g, "clear-g") \ EM(netfs_folio_trace_copy_to_cache, "copy") \ EM(netfs_folio_trace_end_copy, "end-copy") \ + EM(netfs_folio_trace_filled_gaps, "filled-gaps") \ EM(netfs_folio_trace_kill, "kill") \ EM(netfs_folio_trace_mkwrite, "mkwrite") \ EM(netfs_folio_trace_mkwrite_plus, "mkwrite+") \ + EM(netfs_folio_trace_read_gaps, "read-gaps") \ EM(netfs_folio_trace_redirty, "redirty") \ EM(netfs_folio_trace_redirtied, "redirtied") \ EM(netfs_folio_trace_store, "store") \ |