From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
If the gfp context allows it, and we're not kswapd, then try to write
out the folio that has private data.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfs/file.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 563c5e0c55e8..3bed75c5250b 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -432,8 +432,13 @@ static bool nfs_release_folio(struct folio *folio, gfp_t gfp)
dfprintk(PAGECACHE, "NFS: release_folio(%p)\n", folio);
/* If the private flag is set, then the folio is not freeable */
- if (folio_test_private(folio))
- return false;
+ if (folio_test_private(folio)) {
+ if ((current_gfp_context(gfp) & GFP_KERNEL) != GFP_KERNEL ||
+ current_is_kswapd())
+ return false;
+ if (nfs_wb_folio(folio_file_mapping(folio)->host, folio) < 0)
+ return false;
+ }
return nfs_fscache_release_folio(folio, gfp);
}
--
2.39.0
