linux-stable.git/fs/ceph, branch v3.12.44

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

ceph: hung on ceph fscache invalidate in some cases

2014-01-09T20:25:06+00:00

commit ffc79664d15841025d90afdd902c4112ffe168d6 upstream.

In some cases I'm on my ceph client cluster I'm seeing hunk kernel tasks in
the invalidate page code path. This is due to the fact that we don't check if
the page is marked as cache before calling fscache_wait_on_page_write().

This is the log from the hang

INFO: task XXXXXX:12034 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
 ...
Call Trace:
[] schedule+0x29/0x70
[] __fscache_wait_on_page_write+0x6d/0xb0 [fscache]
[] ? add_wait_queue+0x60/0x60
[] ceph_invalidate_fscache_page+0x29/0x50 [ceph]
[] ceph_invalidatepage+0x70/0x190 [ceph]
[] ? delete_from_page_cache+0x5f/0x70
[] truncate_inode_page+0x8b/0x90
[] truncate_inode_pages_range.part.12+0x13d/0x620
[] truncate_inode_pages_range+0x4d/0x60
[] truncate_inode_pages+0x15/0x20
[] evict+0x1a6/0x1b0
[] iput+0x103/0x190
 ...

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

ceph: use d_invalidate() to invalidate aliases

2013-09-06T19:55:29+00:00

d_invalidate() is the standard VFS method to invalidate dentry.
compare to d_delete(), it also try shrinking children dentries.

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

ceph: remove ceph_lookup_inode()

2013-09-06T19:55:09+00:00

commit 6f60f889 (ceph: fix freeing inode vs removing session caps race)
introduced ceph_lookup_inode(). But there is already a ceph_find_inode()
which provides similar function. So remove ceph_lookup_inode(), use
ceph_find_inode() instead.

Signed-off-by: Yan, Zheng 
Reviewed-by: Alex Elder 
Reviewed-by: Sage Weil