ceph: quota: support for ceph.quota.max_bytes

[mirror_ubuntu-bionic-kernel.git] / fs / ceph / file.c

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 4ef0d60b4ebeb2343b763f734caf95ef5827381f..a51098c0fc877eed3c0e6b4e373db5908788ed02 100644 (file)
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1340,6 +1340,11 @@ retry_snap:
 
        pos = iocb->ki_pos;
        count = iov_iter_count(from);
+       if (ceph_quota_is_max_bytes_exceeded(inode, pos + count)) {
+               err = -EDQUOT;
+               goto out;
+       }
+
        err = file_remove_privs(file);
        if (err)
                goto out;
@@ -1670,6 +1675,12 @@ static long ceph_fallocate(struct file *file, int mode,
                goto unlock;
        }
 
+       if (!(mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE)) &&
+           ceph_quota_is_max_bytes_exceeded(inode, offset + length)) {
+               ret = -EDQUOT;
+               goto unlock;
+       }
+
        if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) &&
            !(mode & FALLOC_FL_PUNCH_HOLE)) {
                ret = -ENOSPC;