linux-toradex.git/fs/ceph/dir.c, branch v3.14.45

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

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

Signed-off-by: Yan, Zheng

ceph: fix posix ACL hooks

2014-01-30T00:05:28+00:00

The merge of commit 7221fe4c2ed7 ("ceph: add acl for cephfs") raced with
upstream changes in the generic POSIX ACL code (eg commit 2aeccbe957d0
"fs: add generic xattr_acl handlers" and others).

Some of the fallout was fixed in commit 4db658ea0ca ("ceph: Fix up after
semantic merge conflict"), but it was incomplete: the set_acl
inode_operation wasn't getting set, and the prototype needed to be
adjusted a bit (it doesn't take a dentry anymore).

Signed-off-by: Sage Weil 
Signed-off-by: Ilya Dryomov 
Signed-off-by: Linus Torvalds

ceph: check inode caps in ceph_d_revalidate

2014-01-21T05:29:33+00:00

Some inodes in readdir reply may have no caps. Getattr mds request
for these inodes can return -ESTALE. The fix is consider dentry that
links to inode with no caps as invalid. Invalid dentry causes a
lookup request to send to the mds, the MDS will send caps back.

Signed-off-by: Yan, Zheng

ceph: add acl for cephfs

2013-12-31T18:32:01+00:00

Signed-off-by: Guangliang Zhao 
Reviewed-by: Li Wang 
Reviewed-by: Zheng Yan

ceph: handle frag mismatch between readdir request and reply

2013-09-30T21:49:53+00:00

If client has outdated directory fragments information, it may request
readdir an non-existent directory fragment. In this case, the MDS finds
an approximate directory fragment and sends its contents back to the
client. When receiving a reply with fragment that is different than the
requested one, the client need to reset the 'readdir offset'.

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

Merge remote-tracking branch 'linus/master' into testing

2013-08-15T18:11:45+00:00

ceph: drop CAP_LINK_SHARED when sending "link" request to MDS

2013-08-10T00:54:32+00:00

To handle "link" request, the MDS need to xlock inode's linklock,
which requires revoking any CAP_LINK_SHARED.

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