linux-stable.git/fs/ceph, branch v3.14.78

move d_rcu from overlapping d_child to overlapping d_alias

2015-04-29T08:31:54+00:00

commit 946e51f2bf37f1656916eb75bd0742ba33983c28 upstream.

move d_rcu from overlapping d_child to overlapping d_alias

Signed-off-by: Al Viro 
Cc: Ben Hutchings 
[hujianyang: Backported to 3.14 refer to the work of Ben Hutchings in 3.2:
 - Apply name changes in all the different places we use d_alias and d_child
 - Move the WARN_ON() in __d_free() to d_free() as we don't have dentry_free()]
Signed-off-by: hujianyang 
Signed-off-by: Greg Kroah-Hartman

ceph: fix null pointer dereference in discard_cap_releases()

2015-01-16T14:59:33+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 
Cc: Markus Blank-Burian 
Signed-off-by: Greg Kroah-Hartman

ceph: do_sync is never initialized

2015-01-16T14:59:33+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: Greg Kroah-Hartman

ceph: clear directory's completeness when creating file

2014-06-07T17:28:20+00:00

commit 0a8a70f96fe1bd3e07c15bb86fd247e76102398a upstream.

When creating a file, ceph_set_dentry_offset() puts the new dentry
at the end of directory's d_subdirs, then set the dentry's offset
based on directory's max offset. The offset does not reflect the
real postion of the dentry in directory. Later readdir reply from
MDS may change the dentry's position/offset. This inconsistency
can cause missing/duplicate entries in readdir result if readdir
is partly satisfied by dcache_readdir().

The fix is clear directory's completeness after creating/renaming
file. It prevents later readdir from using dcache_readdir().

Fixes: http://tracker.ceph.com/issues/8025
Signed-off-by: Yan, Zheng 
Reviewed-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

ceph: fix __dcache_readdir()

2014-02-17T20:37:13+00:00

If directory is fragmented, readdir() read its dirfrags one by one.
After reading all dirfrags, the corresponding dentries are sorted in
(frag_t, off) order in the dcache. If dentries of a directory are all
cached, __dcache_readdir() can use the cached dentries to satisfy
readdir syscall. But when checking if a given dentry is after the
position of readdir, __dcache_readdir() compares numerical value of
frag_t directly. This is wrong, it should use ceph_frag_compare().

Signed-off-by: Yan, Zheng

ceph: add acl, noacl options for cephfs mount

2014-02-17T20:37:12+00:00

Make the 'acl' option dependent on having ACL support compiled in.  Make
the 'noacl' option work even without it so that one can always ask it to
be off and not error out on mount when it is not supported.

Signed-off-by: Guangliang Zhao 
Signed-off-by: Sage Weil

ceph: make ceph_forget_all_cached_acls() static inline

2014-02-17T20:37:12+00:00

Signed-off-by: Guangliang Zhao 
Reviewed-by: Alex Elder 
Signed-off-by: Sage Weil

ceph: add missing init_acl() for mkdir() and atomic_open()

2014-02-17T20:37:11+00:00

Signed-off-by: Yan, Zheng

ceph: fix ceph_set_acl()

2014-02-17T20:37:11+00:00

If acl is equivalent to file mode permission bits, ceph_set_acl()
needs to remove any existing acl xattr. Use __ceph_setxattr() to
handle both setting and removing acl xattr cases, it doesn't return
-ENODATA when there is no acl xattr.

Signed-off-by: Yan, Zheng

ceph: fix ceph_removexattr()

2014-02-17T20:37:10+00:00

Signed-off-by: Yan, Zheng