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authorDavid Howells <dhowells@redhat.com>2023-09-29 21:11:31 +0200
committerDavid Howells <dhowells@redhat.com>2023-12-28 10:45:23 +0100
commite2e2e83924b1fe4c28bf5617db90e893755e9cbd (patch)
tree4442e8fbe8ebdb7d8949d10cad9cac910124acaf /fs
parentnetfs: Make netfs_read_folio() handle streaming-write pages (diff)
downloadlinux-e2e2e83924b1fe4c28bf5617db90e893755e9cbd.tar.xz
linux-e2e2e83924b1fe4c28bf5617db90e893755e9cbd.zip
netfs: Allocate multipage folios in the writepath
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@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 'fs')
-rw-r--r--fs/netfs/buffered_write.c9
1 files 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,
mapping_gfp_mask(mapping));
}