linux.git/fs/ceph/addr.c, branch v5.9

ceph: move sb->wb_pagevec_pool to be a global mempool

2020-08-04T17:41:12+00:00

When doing some testing recently, I hit some page allocation failures
on mount, when creating the wb_pagevec_pool for the mount. That
requires 128k (32 contiguous pages), and after thrashing the memory
during an xfstests run, sometimes that would fail.

128k for each mount seems like a lot to hold in reserve for a rainy
day, so let's change this to a global mempool that gets allocated
when the module is plugged in.

Signed-off-by: Jeff Layton 
Reviewed-by: Ilya Dryomov 
Signed-off-by: Ilya Dryomov

ceph: add read/write latency metric support

2020-06-01T11:22:51+00:00

Calculate the latency for OSD read requests. Add a new r_end_stamp
field to struct ceph_osd_request that will hold the time of that
the reply was received. Use that to calculate the RTT for each call,
and divide the sum of those by number of calls to get averate RTT.

Keep a tally of RTT for OSD writes and number of calls to track average
latency of OSD writes.

URL: https://tracker.ceph.com/issues/43215
Signed-off-by: Xiubo Li 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: switch to page_mkwrite_check_truncate in ceph_page_mkwrite

2020-03-30T10:42:41+00:00

Use the "page has been truncated" logic in page_mkwrite_check_truncate
instead of reimplementing it here.  Other than with the existing code,
fail with -EFAULT / VM_FAULT_NOPAGE when page_offset(page) == size here
as well, as should be expected.

Signed-off-by: Andreas Gruenbacher 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: move ceph_osdc_{read,write}pages to ceph.ko

2020-03-30T10:42:40+00:00

Since these helpers are only used by ceph.ko, move them there and
rename them with _sync_ qualifiers.

Signed-off-by: Xiubo Li 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: don't ClearPageChecked in ceph_invalidatepage()

2020-03-30T10:42:40+00:00

CephFS doesn't set this bit to begin with, so there should be no need
to clear it.

Reported-by: David Howells 
Signed-off-by: Jeff Layton 
Reviewed-by: Ilya Dryomov 
Signed-off-by: Ilya Dryomov

ceph: use release_pages() directly

2019-09-16T10:06:25+00:00

release_pages() has been available to modules since Oct, 2010,
when commit 0be8557bcd34 ("fuse: use release_pages()") added
EXPORT_SYMBOL(release_pages). However, this ceph code was still
using a workaround.

Remove the workaround, and call release_pages() directly.

Signed-off-by: John Hubbard 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: don't freeze during write page faults

2019-09-16T10:06:25+00:00

Prevent freezing operations during write page faults. This is good
practice for most filesystems, but especially for ceph since we're
monkeying with the signal table here.

Signed-off-by: Jeff Layton 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: don't SetPageError on writepage errors

2019-09-16T10:06:24+00:00

We already mark the mapping in that case, and doing this can cause
false positives to occur at fsync time, as well as spurious read
errors.

Signed-off-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: auto reconnect after blacklisted

2019-09-16T10:06:24+00:00

Make client use osd reply and session message to infer if itself is
blacklisted. Client reconnect to cluster using new entity addr if it
is blacklisted. Auto reconnect is limited to once every 30 minutes.

Auto reconnect is disabled by default. It can be enabled/disabled by
recover_session= mount option. In 'clean' mode, client drops
any dirty data/metadata, invalidates page caches and invalidates all
writable file handles. After reconnect, file locks become stale because
MDS loses track of them. If an inode contains any stale file locks,
read/write on the indoe are not allowed until applications release all
stale file locks.

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: pass filp to ceph_get_caps()

2019-09-16T10:06:24+00:00

Also change several other functions' arguments, no logical changes.
This is preparetion for later patch that checks filp error.

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov