From: Xiubo Li <xiubli@redhat.com>
Date: Thu, 23 Jun 2022 09:17:21 +0000 (+0800)
Subject: ceph: flush the dirty caps immediatelly when quota is approaching
X-Git-Tag: v6.0-rc1~31^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e027ddb6d3cce80945ab86358929460f91f5cf4f;p=thirdparty%2Fkernel%2Flinux.git

ceph: flush the dirty caps immediatelly when quota is approaching

When the quota is approaching we need to notify it to the MDS as
soon as possible, or the client could write to the directory more
than expected.

This will flush the dirty caps without delaying after each write,
though this couldn't prevent the real size of a directory exceed
the quota but could prevent it as soon as possible.

Link: https://tracker.ceph.com/issues/56180
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Luís Henriques <lhenriques@suse.de>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
---

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 0acff406ba297..53cfe026b3ea5 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -1978,14 +1978,15 @@ retry:
 	}
 
 	dout("check_caps %llx.%llx file_want %s used %s dirty %s flushing %s"
-	     " issued %s revoking %s retain %s %s%s\n", ceph_vinop(inode),
+	     " issued %s revoking %s retain %s %s%s%s\n", ceph_vinop(inode),
 	     ceph_cap_string(file_wanted),
 	     ceph_cap_string(used), ceph_cap_string(ci->i_dirty_caps),
 	     ceph_cap_string(ci->i_flushing_caps),
 	     ceph_cap_string(issued), ceph_cap_string(revoking),
 	     ceph_cap_string(retain),
 	     (flags & CHECK_CAPS_AUTHONLY) ? " AUTHONLY" : "",
-	     (flags & CHECK_CAPS_FLUSH) ? " FLUSH" : "");
+	     (flags & CHECK_CAPS_FLUSH) ? " FLUSH" : "",
+	     (flags & CHECK_CAPS_NOINVAL) ? " NOINVAL" : "");
 
 	/*
 	 * If we no longer need to hold onto old our caps, and we may
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index ffb717e2c1dff..cd025ff25bf01 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1912,7 +1912,7 @@ retry_snap:
 		if (dirty)
 			__mark_inode_dirty(inode, dirty);
 		if (ceph_quota_is_max_bytes_approaching(inode, iocb->ki_pos))
-			ceph_check_caps(ci, 0, NULL);
+			ceph_check_caps(ci, CHECK_CAPS_FLUSH, NULL);
 	}
 
 	dout("aio_write %p %llx.%llx %llu~%u  dropping cap refs on %s\n",
@@ -2529,7 +2529,8 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
 		/* Let the MDS know about dst file size change */
 		if (ceph_inode_set_size(dst_inode, dst_off) ||
 		    ceph_quota_is_max_bytes_approaching(dst_inode, dst_off))
-			ceph_check_caps(dst_ci, CHECK_CAPS_AUTHONLY, NULL);
+			ceph_check_caps(dst_ci, CHECK_CAPS_AUTHONLY | CHECK_CAPS_FLUSH,
+					NULL);
 	}
 	/* Mark Fw dirty */
 	spin_lock(&dst_ci->i_ceph_lock);