From: Weston Andros Adamson Date: Fri, 18 Jul 2014 00:42:16 +0000 (-0400) Subject: nfs: fix comment and add warn_on for PG_INODE_REF X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=b412ddf0661e11485876a202c48868143e3a01cf;p=deliverable%2Flinux.git nfs: fix comment and add warn_on for PG_INODE_REF Fix the comment in nfs_page.h for PG_INODE_REF to reflect that it's no longer set only on head requests. Also add a WARN_ON_ONCE in nfs_inode_remove_request as PG_INODE_REF should always be set. Suggested-by: Peng Tao Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 8d1ed2b9c16c..e6bc5b51f325 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -707,6 +707,8 @@ static void nfs_inode_remove_request(struct nfs_page *req) if (test_and_clear_bit(PG_INODE_REF, &req->wb_flags)) nfs_release_request(req); + else + WARN_ON_ONCE(1); } static void diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 291924ca9517..6ad2bbcad405 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -26,7 +26,7 @@ enum { PG_MAPPED, /* page private set for buffered io */ PG_CLEAN, /* write succeeded */ PG_COMMIT_TO_DS, /* used by pnfs layouts */ - PG_INODE_REF, /* extra ref held by inode (head req only) */ + PG_INODE_REF, /* extra ref held by inode when in writeback */ PG_HEADLOCK, /* page group lock of wb_head */ PG_TEARDOWN, /* page group sync for destroy */ PG_UNLOCKPAGE, /* page group sync bit in read path */