commit c8ad8894e92b853df5a766061ee9cde7e10e682f
author Trond Myklebust <trond.myklebust@primarydata.com> Wed Aug 05 17:31:58 2015 -0400
committer Trond Myklebust <trond.myklebust@primarydata.com> Wed Aug 12 14:27:23 2015 -0400
tree 34c11df15215ae0ad18a69ef82ee26d08c58a7b6
parent d099d7b8316f3ebd63472d207c4801a464330016

NFSv4.2/pnfs: Use GFP_NOIO for layoutstat reporting in the writeback path

Prevent a potential deadlock.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

fs/nfs/pnfs.c

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 70bf706..a6ec420 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -2267,7 +2267,7 @@
 
 #if IS_ENABLED(CONFIG_NFS_V4_2)
 int
-pnfs_report_layoutstat(struct inode *inode)
+pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags)
 {
 	struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
 	struct nfs_server *server = NFS_SERVER(inode);
@@ -2294,7 +2294,7 @@
 	pnfs_get_layout_hdr(hdr);
 	spin_unlock(&inode->i_lock);
 
-	data = kzalloc(sizeof(*data), GFP_KERNEL);
+	data = kzalloc(sizeof(*data), gfp_flags);
 	if (!data) {
 		status = -ENOMEM;
 		goto out_put;