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Commit dcfc4f25 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFS: Write the entire file if a server reboot occurs during fsync() 



This is to ensure that we don't clear the NFS_CONTEXT_RESEND_WRITES
flag while there are still writes that haven't been resent.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 05990d1b

fs/nfs/file.c

+7 −0
Original line number Diff line number Diff line
@@ -301,6 +301,13 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) 
		mutex_lock(&inode->i_mutex);

		ret = nfs_file_fsync_commit(file, start, end, datasync);

		mutex_unlock(&inode->i_mutex);

		/*

		 * If nfs_file_fsync_commit detected a server reboot, then

		 * resend all dirty pages that might have been covered by

		 * the NFS_CONTEXT_RESEND_WRITES flag

		 */

		start = 0;

		end = LLONG_MAX;

	} while (ret == -EAGAIN);



	return ret;

fs/nfs/nfs4file.c

+7 −0
Original line number Diff line number Diff line
@@ -105,6 +105,13 @@ nfs4_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) 
			/* application has asked for meta-data sync */

			ret = pnfs_layoutcommit_inode(inode, true);

		mutex_unlock(&inode->i_mutex);

		/*

		 * If nfs_file_fsync_commit detected a server reboot, then

		 * resend all dirty pages that might have been covered by

		 * the NFS_CONTEXT_RESEND_WRITES flag

		 */

		start = 0;

		end = LLONG_MAX;

	} while (ret == -EAGAIN);



	return ret;