From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp2120.oracle.com ([156.151.31.85]:41702 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726938AbeIZQ3h (ORCPT ); Wed, 26 Sep 2018 12:29:37 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w8QADwFf029204 for ; Wed, 26 Sep 2018 10:17:22 GMT Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by userp2120.oracle.com with ESMTP id 2mnvtur87u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 26 Sep 2018 10:17:22 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userv0021.oracle.com (8.14.4/8.14.4) with ESMTP id w8QAHLeW020261 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 26 Sep 2018 10:17:21 GMT Received: from abhmp0013.oracle.com (abhmp0013.oracle.com [141.146.116.19]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w8QAHLj0027633 for ; Wed, 26 Sep 2018 10:17:21 GMT From: Allison Henderson Subject: [PATCH v9 08/28] xfs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred Date: Wed, 26 Sep 2018 03:14:47 -0700 Message-Id: <1537956907-10244-9-git-send-email-allison.henderson@oracle.com> In-Reply-To: <1537956907-10244-1-git-send-email-allison.henderson@oracle.com> References: <1537956907-10244-1-git-send-email-allison.henderson@oracle.com> Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: linux-xfs@vger.kernel.org These routines set up set and start a new deferred attribute operation. These functions are meant to be called by other code needing to initiate a deferred attribute operation. We will use these routines later in the parent pointer patches. Signed-off-by: Allison Henderson --- fs/xfs/libxfs/xfs_attr.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/xfs/libxfs/xfs_attr.h | 7 +++++ 2 files changed, 87 insertions(+) diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c index 94fbde4..e118282 100644 --- a/fs/xfs/libxfs/xfs_attr.c +++ b/fs/xfs/libxfs/xfs_attr.c @@ -30,6 +30,7 @@ #include "xfs_trans_space.h" #include "xfs_trace.h" #include "xfs_attr_item.h" +#include "xfs_attr.h" /* * xfs_attr.c @@ -447,6 +448,52 @@ xfs_attr_set( return error; } +/* Sets an attribute for an inode as a deferred operation */ +int +xfs_attr_set_deferred( + struct xfs_inode *dp, + struct xfs_trans *tp, + const unsigned char *name, + unsigned int namelen, + const unsigned char *value, + unsigned int valuelen, + int flags) +{ + + struct xfs_attr_item *new; + char *name_value; + + /* + * All set operations must have a name + * but not necessarily a value. + * Generic 062 + */ + if (!namelen) { + ASSERT(0); + return -EFSCORRUPTED; + } + + new = kmem_alloc(XFS_ATTR_ITEM_SIZEOF(namelen, valuelen), + KM_SLEEP|KM_NOFS); + name_value = ((char *)new) + sizeof(struct xfs_attr_item); + memset(new, 0, XFS_ATTR_ITEM_SIZEOF(namelen, valuelen)); + new->xattri_ip = dp; + new->xattri_op_flags = XFS_ATTR_OP_FLAGS_SET; + new->xattri_name_len = namelen; + new->xattri_value_len = valuelen; + new->xattri_flags = flags; + memcpy(&name_value[0], name, namelen); + new->xattri_name = name_value; + new->xattri_value = name_value + namelen; + + if (valuelen > 0) + memcpy(&name_value[namelen], value, valuelen); + + xfs_defer_add(tp, XFS_DEFER_OPS_TYPE_ATTR, &new->xattri_list); + + return 0; +} + /* * Generic handler routine to remove a name from an attribute list. * Transitions attribute list from Btree to shortform as necessary. @@ -530,6 +577,39 @@ xfs_attr_remove( return error; } +/* Removes an attribute for an inode as a deferred operation */ +int +xfs_attr_remove_deferred( + struct xfs_inode *dp, + struct xfs_trans *tp, + const unsigned char *name, + unsigned int namelen, + int flags) +{ + + struct xfs_attr_item *new; + char *name_value; + + if (!namelen) { + ASSERT(0); + return -EFSCORRUPTED; + } + + new = kmem_alloc(XFS_ATTR_ITEM_SIZEOF(namelen, 0), KM_SLEEP|KM_NOFS); + name_value = ((char *)new) + sizeof(struct xfs_attr_item); + memset(new, 0, XFS_ATTR_ITEM_SIZEOF(namelen, 0)); + new->xattri_ip = dp; + new->xattri_op_flags = XFS_ATTR_OP_FLAGS_REMOVE; + new->xattri_name_len = namelen; + new->xattri_value_len = 0; + new->xattri_flags = flags; + memcpy(name_value, name, namelen); + + xfs_defer_add(tp, XFS_DEFER_OPS_TYPE_ATTR, &new->xattri_list); + + return 0; +} + /*======================================================================== * External routines when attribute list is inside the inode *========================================================================*/ diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h index 5a5adc0..406c669 100644 --- a/fs/xfs/libxfs/xfs_attr.h +++ b/fs/xfs/libxfs/xfs_attr.h @@ -171,5 +171,12 @@ int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize, int xfs_attr_args_init(struct xfs_da_args *args, struct xfs_inode *dp, const unsigned char *name, int flags); int xfs_attr_calc_size(struct xfs_da_args *args, int *local); +int xfs_attr_set_deferred(struct xfs_inode *dp, struct xfs_trans *tp, + const unsigned char *name, unsigned int name_len, + const unsigned char *value, unsigned int valuelen, + int flags); +int xfs_attr_remove_deferred(struct xfs_inode *dp, struct xfs_trans *tp, + const unsigned char *name, unsigned int namelen, + int flags); #endif /* __XFS_ATTR_H__ */ -- 2.7.4