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authorJeff Layton <jlayton@kernel.org>2019-08-01 17:06:40 +0300
committerIlya Dryomov <idryomov@gmail.com>2019-09-16 13:06:25 +0300
commit249c1df59a508969f5263ac7e3aedfce7f52c556 (patch)
tree2d7cf8dd98f5b2b66bcc502280ceb4e0affdd424 /fs/ceph
parentc62498d7f9d37d5e60d61ca2a4e1f88211af7645 (diff)
downloadlinux-249c1df59a508969f5263ac7e3aedfce7f52c556.tar.xz
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 <jlayton@kernel.org> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/addr.c2
1 files changed, 2 insertions, 0 deletions
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);