From 249c1df59a508969f5263ac7e3aedfce7f52c556 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Thu, 1 Aug 2019 10:06:40 -0400 Subject: [PATCH] ceph: don't freeze during write page faults Prevent freezing operations during write page faults. This is good practice for most filesystems, but especially for ceph since we're monkeying with the signal table here. Signed-off-by: Jeff Layton Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov --- fs/ceph/addr.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 90e8f8487aaf..9efd51926792 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1548,6 +1548,7 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf) if (!prealloc_cf) return VM_FAULT_OOM; + sb_start_pagefault(inode->i_sb); ceph_block_sigs(&oldset); if (ci->i_inline_version != CEPH_INLINE_NONE) { @@ -1622,6 +1623,7 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf) ceph_put_cap_refs(ci, got); out_free: ceph_restore_sigs(&oldset); + sb_end_pagefault(inode->i_sb); ceph_free_cap_flush(prealloc_cf); if (err < 0) ret = vmf_error(err);