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linux/fs/ceph
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Jan Kara 057ba5b245 ceph: Fix race between hole punch and page fault 
Ceph has a following race between hole punching and page fault:

CPU1                                  CPU2
ceph_fallocate()
  ...
  ceph_zero_pagecache_range()
                                      ceph_filemap_fault()
                                        faults in page in the range being
                                        punched
  ceph_zero_objects()

And now we have a page in punched range with invalid data. Fix the
problem by using mapping->invalidate_lock similarly to other
filesystems. Note that using invalidate_lock also fixes a similar race
wrt ->readpage().

CC: Jeff Layton <jlayton@kernel.org>
CC: ceph-devel@vger.kernel.org
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
2021-07-13 14:29:01 +02:00
..
acl.c
fs: make helpers idmap mount aware
2021-01-24 14:27:20 +01:00
addr.c
ceph: Fix race between hole punch and page fault
2021-07-13 14:29:01 +02:00
cache.c
ceph: rip out old fscache readpage handling
2021-04-27 23:52:21 +02:00
cache.h
ceph: convert ceph_readpage to netfs_readpage
2021-04-27 23:52:22 +02:00
caps.c
ceph: eliminate ceph_async_iput()
2021-06-29 00:15:52 +02:00
ceph_frag.c
…
debugfs.c
ceph: add IO size metrics support
2021-06-29 00:15:51 +02:00
dir.c
ceph: take reference to req->r_parent at point of assignment
2021-06-29 00:15:52 +02:00
export.c
ceph: take reference to req->r_parent at point of assignment
2021-06-29 00:15:52 +02:00
file.c
ceph: Fix race between hole punch and page fault
2021-07-13 14:29:01 +02:00
inode.c
ceph: eliminate ceph_async_iput()
2021-06-29 00:15:52 +02:00
io.c
ceph: fix kerneldoc copypasta over ceph_start_io_direct
2021-04-27 23:52:23 +02:00
io.h
…
ioctl.c
…
ioctl.h
…
Kconfig
ceph: convert ceph_readpage to netfs_readpage
2021-04-27 23:52:22 +02:00
locks.c
…
Makefile
…
mds_client.c
ceph: take reference to req->r_parent at point of assignment
2021-06-29 00:15:52 +02:00
mds_client.h
ceph: eliminate session->s_gen_ttl_lock
2021-06-29 00:15:52 +02:00
mdsmap.c
…
metric.c
ceph: allow ceph_put_mds_session to take NULL or ERR_PTR
2021-06-29 00:15:52 +02:00
metric.h
ceph: add IO size metrics support
2021-06-29 00:15:51 +02:00
quota.c
ceph: eliminate ceph_async_iput()
2021-06-29 00:15:52 +02:00
snap.c
ceph: eliminate ceph_async_iput()
2021-06-29 00:15:52 +02:00
strings.c
…
super.c
…
super.h
ceph: eliminate ceph_async_iput()
2021-06-29 00:15:52 +02:00
util.c
…
xattr.c
ceph: support getting ceph.dir.rsnaps vxattr
2021-04-27 23:52:23 +02:00