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Commit 249c1df5 authored by Jeff Layton's avatar Jeff Layton Committed by Ilya Dryomov
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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: default avatarJeff Layton <jlayton@kernel.org>
Reviewed-by: default avatar"Yan, Zheng" <zyan@redhat.com>
Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent c62498d7

fs/ceph/addr.c

+2 −0
Original line number Diff line number Diff line
@@ -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);