linux-stable.git/fs/ceph, branch v3.12.52

ceph: fix kick_requests()

2015-11-14T17:57:13+00:00

commit 282c105225ec3229f344c5fced795b9e1e634440 upstream.

__do_request() may unregister the request. So we should update
iterator 'p' before calling __do_request()

Signed-off-by: "Yan, Zheng" 
Signed-off-by: Jiri Slaby

ceph: protect kick_requests() with mdsc->mutex

2015-11-14T17:57:08+00:00

commit 656e4382948d4b2c81bdaf707f1400f53eff2625 upstream.

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Sage Weil 
Signed-off-by: Jiri Slaby

ceph: make sure request isn't in any waiting list when kicking request.

2015-11-14T17:56:56+00:00

commit 03974e8177b36d672eb59658f976f03cb77c1129 upstream.

we may corrupt waiting list if a request in the waiting list is kicked.

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Sage Weil 
Signed-off-by: Jiri Slaby

move d_rcu from overlapping d_child to overlapping d_alias

2015-01-29T14:45:16+00:00

commit 946e51f2bf37f1656916eb75bd0742ba33983c28 upstream.

Signed-off-by: Al Viro 
Acked-by: Miklos Szeredi 
Signed-off-by: Jiri Slaby

ceph: do_sync is never initialized

2015-01-26T13:39:03+00:00

commit 021b77bee210843bed1ea91b5cad58235ff9c8e5 upstream.

Probably this code was syncing a lot more often then intended because
the do_sync variable wasn't set to zero.

Fixes: c62988ec0910 ('ceph: avoid meaningless calling ceph_caps_revoking if sync_mode == WB_SYNC_ALL.')
Signed-off-by: Dan Carpenter 
Signed-off-by: Ilya Dryomov 
Signed-off-by: Jiri Slaby

ceph: fix null pointer dereference in discard_cap_releases()

2015-01-06T13:13:02+00:00

commit 00bd8edb861eb41d274938cfc0338999d9c593a3 upstream.

send_mds_reconnect() may call discard_cap_releases() after all
release messages have been dropped by cleanup_cap_releases()

Signed-off-by: Yan, Zheng 
Reviewed-by: Sage Weil 
Signed-off-by: Jiri Slaby

ceph: Avoid data inconsistency due to d-cache aliasing in readpage()

2014-01-09T20:25:11+00:00

commit 56f91aad69444d650237295f68c195b74d888d95 upstream.

If the length of data to be read in readpage() is exactly
PAGE_CACHE_SIZE, the original code does not flush d-cache
for data consistency after finishing reading. This patches fixes
this.

Signed-off-by: Li Wang 
Signed-off-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

ceph: allocate non-zero page to fscache in readpage()

2014-01-09T20:25:07+00:00

commit ff638b7df5a9264024a6448bdfde2b2bf5d1994a upstream.

ceph_osdc_readpages() returns number of bytes read, currently,
the code only allocate full-zero page into fscache, this patch
fixes this.

Signed-off-by: Li Wang 
Reviewed-by: Milosz Tanski 
Reviewed-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

ceph: wake up 'safe' waiters when unregistering request

2014-01-09T20:25:07+00:00

commit fc55d2c9448b34218ca58733a6f51fbede09575b upstream.

We also need to wake up 'safe' waiters if error occurs or request
aborted. Otherwise sync(2)/fsync(2) may hang forever.

Signed-off-by: Yan, Zheng 
Signed-off-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

ceph: cleanup aborted requests when re-sending requests.

2014-01-09T20:25:07+00:00

commit eb1b8af33c2e42a9a57fc0a7588f4a7b255d2e79 upstream.

Aborted requests usually get cleared when the reply is received.
If MDS crashes, no reply will be received. So we need to cleanup
aborted requests when re-sending requests.

Signed-off-by: Yan, Zheng 
Reviewed-by: Greg Farnum 
Signed-off-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman