diff options
| author | Yan, Zheng <zyan@redhat.com> | 2016-04-27 17:48:30 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-05-26 01:15:35 +0200 |
| commit | 956d39d631dbcf7b57854873a24e309047f2a7f5 (patch) | |
| tree | 1a813b9bf40a2eb0db472fcccfb9932c350315c5 | |
| parent | 2a5beea3f1b6544d6c72ea220e860a2eda2f9104 (diff) | |
ceph: define 'end/complete' in readdir reply as bit flags
Set a flag in readdir request, which indicates that client interprets
'end/complete' as bit flags. So that mds can reply additional flags in
readdir reply.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
| -rw-r--r-- | fs/ceph/dir.c | 2 | ||||
| -rw-r--r-- | fs/ceph/mds_client.c | 7 | ||||
| -rw-r--r-- | fs/ceph/mds_client.h | 2 | ||||
| -rw-r--r-- | include/linux/ceph/ceph_fs.h | 12 |
4 files changed, 20 insertions, 3 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 68530acea2c8..ebcbd1c946b4 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -365,6 +365,8 @@ more: req->r_readdir_cache_idx = fi->readdir_cache_idx; req->r_readdir_offset = fi->next_offset; req->r_args.readdir.frag = cpu_to_le32(frag); + req->r_args.readdir.flags = + cpu_to_le16(CEPH_READDIR_REPLY_BITFLAGS); req->r_inode = inode; ihold(inode); diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 6220d3caf7ab..1c2befcd24fb 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -181,8 +181,11 @@ static int parse_reply_info_dir(void **p, void *end, ceph_decode_need(p, end, sizeof(num) + 2, bad); num = ceph_decode_32(p); - info->dir_end = ceph_decode_8(p); - info->dir_complete = ceph_decode_8(p); + { + u16 flags = ceph_decode_16(p); + info->dir_end = !!(flags & CEPH_READDIR_FRAG_END); + info->dir_complete = !!(flags & CEPH_READDIR_FRAG_COMPLETE); + } if (num == 0) goto done; diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index 0b84f9c0afa3..2a865812a41b 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -80,7 +80,7 @@ struct ceph_mds_reply_info_parsed { struct ceph_mds_reply_dirfrag *dir_dir; size_t dir_buf_size; int dir_nr; - u8 dir_complete, dir_end; + bool dir_complete, dir_end; struct ceph_mds_reply_dir_entry *dir_entries; }; diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h index bae833d0d055..a811c5e98bfa 100644 --- a/include/linux/ceph/ceph_fs.h +++ b/include/linux/ceph/ceph_fs.h @@ -347,6 +347,17 @@ extern const char *ceph_mds_op_name(int op); #define CEPH_XATTR_REPLACE (1 << 1) #define CEPH_XATTR_REMOVE (1 << 31) +/* + * readdir request flags; + */ +#define CEPH_READDIR_REPLY_BITFLAGS (1<<0) + +/* + * readdir reply flags. + */ +#define CEPH_READDIR_FRAG_END (1<<0) +#define CEPH_READDIR_FRAG_COMPLETE (1<<8) + union ceph_mds_request_args { struct { __le32 mask; /* CEPH_CAP_* */ @@ -364,6 +375,7 @@ union ceph_mds_request_args { __le32 frag; /* which dir fragment */ __le32 max_entries; /* how many dentries to grab */ __le32 max_bytes; + __le16 flags; } __attribute__ ((packed)) readdir; struct { __le32 mode; |