[PATCH 2/2] ceph: use GFP_KERNEL consistently in __ceph_pool_perm_get()

[Xiubo Li via B4 Relay]

From: Xiubo Li <xiubo.li@xxxxxxxxx>

__ceph_pool_perm_get() has four allocations for building OSD STAT
requests, three of which used GFP_NOFS and one (the page vector
allocation) used GFP_KERNEL, making them inconsistent.

The function is only called from ceph_try_get_caps() and
__ceph_get_caps(), both of which are in the user I/O path (read,
write, fallocate, mmap fault), not in the writeback path.  There is
no risk of recursive writeback, so GFP_NOFS is unnecessarily
restrictive.  Use GFP_KERNEL consistently for all four allocations.

Signed-off-by: Xiubo Li <xiubo.li@xxxxxxxxx>
---
 fs/ceph/addr.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index e2da3ab9f808..d2ac3df47e97 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -2479,12 +2479,12 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci,
 		rd_req->r_base_oloc.pool_ns = ceph_get_string(pool_ns);
 	ceph_oid_printf(&rd_req->r_base_oid, "%llx.00000000", ci->i_vino.ino);
 
-	err = ceph_osdc_alloc_messages(rd_req, GFP_NOFS);
+	err = ceph_osdc_alloc_messages(rd_req, GFP_KERNEL);
 	if (err)
 		goto out_unlock;
 
 	wr_req = ceph_osdc_alloc_request(&fsc->client->osdc, NULL,
-					 1, false, GFP_NOFS);
+					 1, false, GFP_KERNEL);
 	if (!wr_req) {
 		err = -ENOMEM;
 		goto out_unlock;
@@ -2495,7 +2495,7 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci,
 	ceph_oloc_copy(&wr_req->r_base_oloc, &rd_req->r_base_oloc);
 	ceph_oid_copy(&wr_req->r_base_oid, &rd_req->r_base_oid);
 
-	err = ceph_osdc_alloc_messages(wr_req, GFP_NOFS);
+	err = ceph_osdc_alloc_messages(wr_req, GFP_KERNEL);
 	if (err)
 		goto out_unlock;
 

-- 
2.53.0