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| author | Yan, Zheng <zyan@redhat.com> | 2017-07-11 17:34:46 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2017-09-06 19:56:41 +0200 |
| commit | 95cca2b44e54b00a3ed6ed7dc869717cd6807e81 (patch) | |
| tree | 944f555f63a1b9641f2598703a562777437b0456 /fs/ceph/file.c | |
| parent | aa187926b739fb391f153335c7552c7a10d60e82 (diff) | |
| download | lwn-95cca2b44e54b00a3ed6ed7dc869717cd6807e81.tar.gz lwn-95cca2b44e54b00a3ed6ed7dc869717cd6807e81.zip | |
ceph: limit osd write size
OSD has a configurable limitation of max write size. OSD return
error if write request size is larger than the limitation. For now,
set max write size to CEPH_MSG_MAX_DATA_LEN. It should be small
enough.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/file.c')
| -rw-r--r-- | fs/ceph/file.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 85f0dba394a2..a39ff54cb372 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -887,7 +887,9 @@ ceph_direct_read_write(struct kiocb *iocb, struct iov_iter *iter, break; } - if (!write) + if (write) + size = min_t(u64, size, fsc->mount_options->wsize); + else size = min_t(u64, size, fsc->mount_options->rsize); len = size; |