doc: Change listed RBD cache defaults to actual defaults

Signed-off-by: Adam Crume <adamcrume@gmail.com>
osdc: Fix ObjectCounter::_readx perf counters

Signed-off-by: Adam Crume <adamcrume@gmail.com>
librbd: Add read-ahead

Signed-off-by: Adam Crume <adamcrume@gmail.com>
client: Replace client readahead logic with Readahead

Signed-off-by: Adam Crume <adamcrume@gmail.com>
when non-default striping is used, internal methods can operate on extra objects

Fixes: #9595

Signed-off-by: xinxin shu <xinxin.shu@intel.com>
add unittest for Striper::get_num_objects

Signed-off-by: xinxin shu <xinxin.shu@intel.com>
Merge pull request #2588 from xinxinsh/wip-9595

Fix #9595

Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Merge remote-tracking branch 'origin/wip-rbd-readahead'

Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

Conflicts:
	src/client/Fh.h
doc: updates on Backfill Reservation

The logic was changed by:

0985ae71bce32c4d9e0e9e9f68bed38eb3c26897
osd: prioritize backfill based on *how* degraded

Signed-off-by: Loic Dachary <loic-201408@dachary.org>
librbd: fix compile warning in librbd/internal.cc.

librbd/internal.cc: In function 'void
librbd::readahead(librbd::ImageCtx*, const std::vector<std::pair<long
unsigned int, long unsigned int> >&, const md_config_t*)':
librbd/internal.cc:3150:38: warning: comparison between signed and
unsigned integer expressions [-Wsign-compare]
       ictx->total_bytes_read > conf->rbd_readahead_disable_after_bytes;
                                      ^

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>
test: fix compile warning in bufferlist.cc

test/bufferlist.cc: In member function ‘virtual void
Buffer_constructors_Test::TestBody()’:
test/bufferlist.cc:154:36: warning: ignoring return value of ‘int
system(const char*)’, declared with attribute warn_unused_result
[-Wunused-result]
     ::system("echo ABC > testfile");
                                    ^
test/bufferlist.cc: In member function ‘virtual void
TestRawPipe::SetUp()’:
test/bufferlist.cc:182:36: warning: ignoring return value of ‘int
system(const char*)’, declared with attribute warn_unused_result
[-Wunused-result]
     ::system("echo ABC > testfile");
                                    ^
test/bufferlist.cc: In member function ‘virtual void
BufferList_read_file_Test::TestBody()’:
test/bufferlist.cc:1768:53: warning: ignoring return value of ‘int
system(const char*)’, declared with attribute warn_unused_result
[-Wunused-result]
   ::system("echo ABC > testfile ; chmod 0 testfile");
                                                     ^
test/bufferlist.cc:1770:32: warning: ignoring return value of ‘int
system(const char*)’, declared with attribute warn_unused_result
[-Wunused-result]
   ::system("chmod +r testfile");
                                ^
test/bufferlist.cc: In member function ‘virtual void
BufferList_read_fd_Test::TestBody()’:
test/bufferlist.cc:1781:34: warning: ignoring return value of ‘int
system(const char*)’, declared with attribute warn_unused_result
[-Wunused-result]
   ::system("echo ABC > testfile");

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>
mds: fix null dereference

Server::handle_client_file_setlock() should return after calling
reply_request()

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Merge pull request #2738 from majianpeng/fix1

Fix1 compile warning

Reviewed-by: Sage Weil <sage@redhat.com>
Merge pull request #2743 from ceph/wip-mds-coverity

mds: fix null dereference

Reviewed-by: Sage Weil <sage@redhat.com>
Merge pull request #2736 from dachary/wip-backfill-documentation

doc: updates on Backfill Reservation

Reviewed-by: David Zafman <david.zafman@inktank.com>
Reviewed-by: Dan Mick <dan.mick@inktank.com>