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ceph: quota: update MDS when max_bytes is approaching

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When we're reaching the ceph.quota.max_bytes limit, i.e., when writing
more than 1/16th of the space left in a quota realm, update the MDS with
the new file size.

This mirrors the fuse-client approach with commit 122c50315ed1 ("client:
Inform mds file size when approaching quota limit"), in the ceph git tree.

Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Luis Henriques
2018-01-05 10:47:22 +00:00
committed by Ilya Dryomov
parent 2b83845f8b
commit 1ab302a0cb
3 changed files with 45 additions and 1 deletions
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6
fs/ceph/file.c
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@@ -1464,6 +1464,7 @@ retry_snap:
if (written >= 0) {
int dirty;
spin_lock(&ci->i_ceph_lock);
ci->i_inline_version = CEPH_INLINE_NONE;
dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_WR,
@@ -1471,6 +1472,8 @@ retry_snap:
spin_unlock(&ci->i_ceph_lock);
if (dirty)
__mark_inode_dirty(inode, dirty);
if (ceph_quota_is_max_bytes_approaching(inode, iocb->ki_pos))
ceph_check_caps(ci, CHECK_CAPS_NODELAY, NULL);
}
dout("aio_write %p %llx.%llx %llu~%u dropping cap refs on %s\n",
@@ -1767,6 +1770,9 @@ static long ceph_fallocate(struct file *file, int mode,
spin_unlock(&ci->i_ceph_lock);
if (dirty)
__mark_inode_dirty(inode, dirty);
if ((endoff > size) &&
ceph_quota_is_max_bytes_approaching(inode, endoff))
ceph_check_caps(ci, CHECK_CAPS_NODELAY, NULL);
}
ceph_put_cap_refs(ci, got);