[PATCH] AFS: Further write support fixes

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Further fixes for AFS write support:

 (1) The afs_send_pages() outer loop must do an extra iteration if it ends
     with 'first == last' because 'last' is inclusive in the page set
     otherwise it fails to send the last page and complete the RxRPC op under
     some circumstances.

 (2) Similarly, the outer loop in afs_pages_written_back() must also do an
     extra iteration if it ends with 'first == last', otherwise it fails to
     clear PG_writeback on the last page under some circumstances.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
---

 fs/afs/rxrpc.c |    2 +-
 fs/afs/write.c |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index 04189c4..1b36f45 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -294,7 +294,7 @@ int afs_send_pages(struct afs_call *call, struct msghdr *msg, struct kvec *iov)
 			put_page(pages[loop]);
 		if (ret < 0)
 			break;
-	} while (first < last);
+	} while (first <= last);
 
 	_leave(" = %d", ret);
 	return ret;
diff --git a/fs/afs/write.c b/fs/afs/write.c
index aa03d43..67ae4db 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -669,7 +669,7 @@ void afs_pages_written_back(struct afs_vnode *vnode, struct afs_call *call)
 	pagevec_init(&pv, 0);
 
 	do {
-		_debug("attach %lx-%lx", first, last);
+		_debug("done %lx-%lx", first, last);
 
 		count = last - first + 1;
 		if (count > PAGEVEC_SIZE)
@@ -701,7 +701,7 @@ void afs_pages_written_back(struct afs_vnode *vnode, struct afs_call *call)
 		}
 
 		__pagevec_release(&pv);
-	} while (first < last);
+	} while (first <= last);
 
 	_leave("");
 }

-
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux