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xfs: embedded the attrlist cursor into struct xfs_attr_list_context

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The attrlist cursor only exists as part of an attr list context, so
embedd the structure instead of pointing to it.  Also give it a proper
xfs_ prefix and remove the obsolete typedef.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Chandan Rajendra <chandanrlinux@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2020-02-26 17:30:43 -08:00 committed by Darrick J. Wong
parent 254f800f81
commit e3a19cdea8
8 changed files with 22 additions and 37 deletions
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6
fs/xfs/libxfs/xfs_attr.h
View File

@ -31,14 +31,14 @@ struct xfs_attr_list_context;
/*
* Kernel-internal version of the attrlist cursor.
*/
typedef struct attrlist_cursor_kern {
struct xfs_attrlist_cursor_kern {
__u32 hashval; /* hash value of next entry to add */
__u32 blkno; /* block containing entry (suggestion) */
__u32 offset; /* offset in list of equal-hashvals */
__u16 pad1; /* padding to match user-level */
__u8 pad2; /* padding to match user-level */
__u8 initted; /* T/F: cursor has been initialized */
} attrlist_cursor_kern_t;
};
/*========================================================================
@ -53,7 +53,7 @@ typedef void (*put_listent_func_t)(struct xfs_attr_list_context *, int,
struct xfs_attr_list_context {
struct xfs_trans *tp;
struct xfs_inode *dp; /* inode */
struct attrlist_cursor_kern *cursor; /* position in list */
struct xfs_attrlist_cursor_kern cursor; /* position in list */
void *buffer; /* output buffer */
/*

1
fs/xfs/libxfs/xfs_attr_leaf.h
View File

@ -8,7 +8,6 @@
#define __XFS_ATTR_LEAF_H__
struct attrlist;
struct attrlist_cursor_kern;
struct xfs_attr_list_context;
struct xfs_da_args;
struct xfs_da_state;

2
fs/xfs/scrub/attr.c
View File

@ -471,7 +471,6 @@ xchk_xattr(
struct xfs_scrub *sc)
{
struct xchk_xattr sx;
struct attrlist_cursor_kern cursor = { 0 };
xfs_dablk_t last_checked = -1U;
int error = 0;
@ -490,7 +489,6 @@ xchk_xattr(
/* Check that every attr key can also be looked up by hash. */
sx.context.dp = sc->ip;
sx.context.cursor = &cursor;
sx.context.resynch = 1;
sx.context.put_listent = xchk_xattr_listent;
sx.context.tp = sc->tp;

19
fs/xfs/xfs_attr_list.c
View File

@ -52,24 +52,19 @@ static int
xfs_attr_shortform_list(
struct xfs_attr_list_context *context)
{
struct attrlist_cursor_kern *cursor;
struct xfs_attrlist_cursor_kern *cursor = &context->cursor;
struct xfs_inode *dp = context->dp;
struct xfs_attr_sf_sort *sbuf, *sbp;
struct xfs_attr_shortform *sf;
struct xfs_attr_sf_entry *sfe;
struct xfs_inode *dp;
int sbsize, nsbuf, count, i;
int error = 0;
ASSERT(context != NULL);
dp = context->dp;
ASSERT(dp != NULL);
ASSERT(dp->i_afp != NULL);
sf = (xfs_attr_shortform_t *)dp->i_afp->if_u1.if_data;
ASSERT(sf != NULL);
if (!sf->hdr.count)
return 0;
cursor = context->cursor;
ASSERT(cursor != NULL);
trace_xfs_attr_list_sf(context);
@ -205,7 +200,7 @@ xfs_attr_shortform_list(
STATIC int
xfs_attr_node_list_lookup(
struct xfs_attr_list_context *context,
struct attrlist_cursor_kern *cursor,
struct xfs_attrlist_cursor_kern *cursor,
struct xfs_buf **pbp)
{
struct xfs_da3_icnode_hdr nodehdr;
@ -288,8 +283,8 @@ STATIC int
xfs_attr_node_list(
struct xfs_attr_list_context *context)
{
struct xfs_attrlist_cursor_kern *cursor = &context->cursor;
struct xfs_attr3_icleaf_hdr leafhdr;
struct attrlist_cursor_kern *cursor;
struct xfs_attr_leafblock *leaf;
struct xfs_da_intnode *node;
struct xfs_buf *bp;
@ -299,7 +294,6 @@ xfs_attr_node_list(
trace_xfs_attr_node_list(context);
cursor = context->cursor;
cursor->initted = 1;
/*
@ -394,7 +388,7 @@ xfs_attr3_leaf_list_int(
struct xfs_buf *bp,
struct xfs_attr_list_context *context)
{
struct attrlist_cursor_kern *cursor;
struct xfs_attrlist_cursor_kern *cursor = &context->cursor;
struct xfs_attr_leafblock *leaf;
struct xfs_attr3_icleaf_hdr ichdr;
struct xfs_attr_leaf_entry *entries;
@ -408,7 +402,6 @@ xfs_attr3_leaf_list_int(
xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr, leaf);
entries = xfs_attr3_leaf_entryp(leaf);
cursor = context->cursor;
cursor->initted = 1;
/*
@ -496,7 +489,7 @@ xfs_attr_leaf_list(
trace_xfs_attr_leaf_list(context);
context->cursor->blkno = 0;
context->cursor.blkno = 0;
error = xfs_attr3_leaf_read(context->tp, context->dp, 0, &bp);
if (error)
return error;

16
fs/xfs/xfs_ioctl.c
View File

@ -375,8 +375,7 @@ xfs_ioc_attr_list(
int flags,
struct xfs_attrlist_cursor __user *ucursor)
{
struct xfs_attr_list_context context;
struct attrlist_cursor_kern cursor;
struct xfs_attr_list_context context = { };
struct xfs_attrlist *alist;
void *buffer;
int error;
@ -396,12 +395,13 @@ xfs_ioc_attr_list(
/*
* Validate the cursor.
*/
if (copy_from_user(&cursor, ucursor, sizeof(cursor)))
if (copy_from_user(&context.cursor, ucursor, sizeof(context.cursor)))
return -EFAULT;
if (cursor.pad1 || cursor.pad2)
if (context.cursor.pad1 || context.cursor.pad2)
return -EINVAL;
if ((cursor.initted == 0) &&
(cursor.hashval || cursor.blkno || cursor.offset))
if (!context.cursor.initted &&
(context.cursor.hashval || context.cursor.blkno ||
context.cursor.offset))
return -EINVAL;
buffer = kmem_zalloc_large(bufsize, 0);
@ -411,9 +411,7 @@ xfs_ioc_attr_list(
/*
* Initialize the output buffer.
*/
memset(&context, 0, sizeof(context));
context.dp = dp;
context.cursor = &cursor;
context.resynch = 1;
context.attr_filter = xfs_attr_filter(flags);
context.buffer = buffer;
@ -431,7 +429,7 @@ xfs_ioc_attr_list(
goto out_free;
if (copy_to_user(ubuf, buffer, bufsize) ||
copy_to_user(ucursor, &cursor, sizeof(cursor)))
copy_to_user(ucursor, &context.cursor, sizeof(context.cursor)))
error = -EFAULT;
out_free:
kmem_free(buffer);

1
fs/xfs/xfs_ioctl.h
View File

@ -6,7 +6,6 @@
#ifndef __XFS_IOCTL_H__
#define __XFS_IOCTL_H__
struct attrlist_cursor_kern;
struct xfs_bstat;
struct xfs_ibulk;
struct xfs_inogrp;

12
fs/xfs/xfs_trace.h
View File

@ -60,9 +60,9 @@ DECLARE_EVENT_CLASS(xfs_attr_list_class,
TP_fast_assign(
__entry->dev = VFS_I(ctx->dp)->i_sb->s_dev;
__entry->ino = ctx->dp->i_ino;
__entry->hashval = ctx->cursor->hashval;
__entry->blkno = ctx->cursor->blkno;
__entry->offset = ctx->cursor->offset;
__entry->hashval = ctx->cursor.hashval;
__entry->blkno = ctx->cursor.blkno;
__entry->offset = ctx->cursor.offset;
__entry->buffer = ctx->buffer;
__entry->bufsize = ctx->bufsize;
__entry->count = ctx->count;
@ -186,9 +186,9 @@ TRACE_EVENT(xfs_attr_list_node_descend,
TP_fast_assign(
__entry->dev = VFS_I(ctx->dp)->i_sb->s_dev;
__entry->ino = ctx->dp->i_ino;
__entry->hashval = ctx->cursor->hashval;
__entry->blkno = ctx->cursor->blkno;
__entry->offset = ctx->cursor->offset;
__entry->hashval = ctx->cursor.hashval;
__entry->blkno = ctx->cursor.blkno;
__entry->offset = ctx->cursor.offset;
__entry->buffer = ctx->buffer;
__entry->bufsize = ctx->bufsize;
__entry->count = ctx->count;

2
fs/xfs/xfs_xattr.c
View File

@ -190,7 +190,6 @@ xfs_vn_listxattr(
size_t size)
{
struct xfs_attr_list_context context;
struct attrlist_cursor_kern cursor = { 0 };
struct inode *inode = d_inode(dentry);
int error;
@ -199,7 +198,6 @@ xfs_vn_listxattr(
*/
memset(&context, 0, sizeof(context));
context.dp = XFS_I(inode);
context.cursor = &cursor;
context.resynch = 1;
context.buffer = size ? data : NULL;
context.bufsize = size;