From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from aserp2120.oracle.com ([141.146.126.78]:45840 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752308AbeDRWNt (ORCPT ); Wed, 18 Apr 2018 18:13:49 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w3IMC9O9154838 for ; Wed, 18 Apr 2018 22:13:49 GMT Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by aserp2120.oracle.com with ESMTP id 2hdrxncudw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 18 Apr 2018 22:13:48 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w3IMDmfm031494 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 18 Apr 2018 22:13:48 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 w3IMDm0o005625 for ; Wed, 18 Apr 2018 22:13:48 GMT From: Allison Henderson Subject: [PATCH 04/18] xfs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred Date: Wed, 18 Apr 2018 15:11:12 -0700 Message-Id: <1524089486-22922-5-git-send-email-allison.henderson@oracle.com> In-Reply-To: <1524089486-22922-1-git-send-email-allison.henderson@oracle.com> References: <1524089486-22922-1-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 | 70 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/xfs/libxfs/xfs_attr.h | 5 ++++ 2 files changed, 75 insertions(+) diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c index 338abd6..5acf6e7 100644 --- a/fs/xfs/libxfs/xfs_attr.c +++ b/fs/xfs/libxfs/xfs_attr.c @@ -504,6 +504,43 @@ 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_defer_ops *dfops, + void *name, + unsigned int namelen, + void *value, + unsigned int valuelen, + int flags) +{ + + struct xfs_attr_item *new; + char *name_value; + + if (!namelen || !valuelen) { + 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); + memcpy(&name_value[namelen], value, valuelen); + + xfs_defer_add(dfops, 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. @@ -581,6 +618,39 @@ 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_defer_ops *dfops, + void *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(dfops, 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 e3f6cc8..924bf7c 100644 --- a/fs/xfs/libxfs/xfs_attr.h +++ b/fs/xfs/libxfs/xfs_attr.h @@ -183,5 +183,10 @@ 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_defer_ops *dfops, + void *name, unsigned int name_len, void *value, + unsigned int valuelen, int flags); +int xfs_attr_remove_deferred(struct xfs_inode *dp, struct xfs_defer_ops *dfops, + void *name, unsigned int namelen, int flags); #endif /* __XFS_ATTR_H__ */ -- 2.7.4