[PATCH v4 27/39] netfs: Allocate multipage folios in the writepath

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


Allocate a multipage folio when copying data into the pagecache if possible
if there's sufficient data to warrant it.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: Jeff Layton <jlayton@xxxxxxxxxx>
cc: linux-cachefs@xxxxxxxxxx
cc: linux-fsdevel@xxxxxxxxxxxxxxx
cc: linux-mm@xxxxxxxxx
 fs/netfs/buffered_write.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/fs/netfs/buffered_write.c b/fs/netfs/buffered_write.c
index 6e7f06d9962d..b76688e98f81 100644
--- a/fs/netfs/buffered_write.c
+++ b/fs/netfs/buffered_write.c
@@ -84,14 +84,19 @@ static enum netfs_how_to_modify netfs_how_to_modify(struct netfs_inode *ctx,
- * Grab a folio for writing and lock it.
+ * Grab a folio for writing and lock it.  Attempt to allocate as large a folio
+ * as possible to hold as much of the remaining length as possible in one go.
 static struct folio *netfs_grab_folio_for_write(struct address_space *mapping,
 						loff_t pos, size_t part)
 	pgoff_t index = pos / PAGE_SIZE;
+	fgf_t fgp_flags = FGP_WRITEBEGIN;
-	return __filemap_get_folio(mapping, index, FGP_WRITEBEGIN,
+	if (mapping_large_folio_support(mapping))
+		fgp_flags |= fgf_set_order(pos % PAGE_SIZE + part);
+	return __filemap_get_folio(mapping, index, fgp_flags,

You received this message because you are subscribed to the Google Groups "linux-cachefs@xxxxxxxxxx" group.
To unsubscribe from this group and stop receiving emails from it, send an email to linux-cachefs+unsubscribe@xxxxxxxxxx.

[Index of Archives]     [LARTC]     [Bugtraq]     [Yosemite Forum]
  Powered by Linux