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xfs: use ->t_firstblock in dir ops 

Callers of the xfs_dir_*() functions currently pass an on-stack
firstblock variable. While the dirops infrastructure carries a
pointer to this variable, it never rolls the transaction and so it
is safe to use ->t_firstblock instead.

Fix up the various xfs_dir_*() callers to use ->t_firstblock. Also
remove the unnecessary parameter for xfs_cross_rename().

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Brian Foster 2018-07-11 22:26:20 -07:00 committed by Darrick J. Wong
parent bba59c5e4b
commit f16dea54b7
2 changed files with 23 additions and 28 deletions
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42
fs/xfs/xfs_inode.c
View File

@ -1143,7 +1143,6 @@ xfs_create(
struct xfs_trans *tp = NULL;
int error;
struct xfs_defer_ops dfops;
xfs_fsblock_t first_block;
bool unlock_dp_on_error = false;
prid_t prid;
struct xfs_dquot *udqp = NULL;
@ -1195,7 +1194,7 @@ xfs_create(
xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT);
unlock_dp_on_error = true;
xfs_defer_init(tp, &dfops, &first_block);
xfs_defer_init(tp, &dfops, &tp->t_firstblock);
/*
* Reserve disk quota and the inode.
@ -1224,7 +1223,7 @@ xfs_create(
xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL);
unlock_dp_on_error = false;
error = xfs_dir_createname(tp, dp, name, ip->i_ino, &first_block,
error = xfs_dir_createname(tp, dp, name, ip->i_ino, &tp->t_firstblock,
resblks ?
resblks - XFS_IALLOC_SPACE_RES(mp) : 0);
if (error) {
@ -1401,7 +1400,6 @@ xfs_link(
xfs_trans_t *tp;
int error;
struct xfs_defer_ops dfops;
xfs_fsblock_t first_block;
int resblks;
trace_xfs_link(tdp, target_name);
@ -1450,7 +1448,7 @@ xfs_link(
goto error_return;
}
xfs_defer_init(tp, &dfops, &first_block);
xfs_defer_init(tp, &dfops, &tp->t_firstblock);
/*
* Handle initial link state of O_TMPFILE inode
@ -1462,7 +1460,7 @@ xfs_link(
}
error = xfs_dir_createname(tp, tdp, target_name, sip->i_ino,
&first_block, resblks);
&tp->t_firstblock, resblks);
if (error)
goto error_return;
xfs_trans_ichgtime(tp, tdp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
@ -2577,7 +2575,6 @@ xfs_remove(
int is_dir = S_ISDIR(VFS_I(ip)->i_mode);
int error = 0;
struct xfs_defer_ops dfops;
xfs_fsblock_t first_block;
uint resblks;
trace_xfs_remove(dp, name);
@ -2657,8 +2654,8 @@ xfs_remove(
if (error)
goto out_trans_cancel;
xfs_defer_init(tp, &dfops, &first_block);
error = xfs_dir_removename(tp, dp, name, ip->i_ino, &first_block,
xfs_defer_init(tp, &dfops, &tp->t_firstblock);
error = xfs_dir_removename(tp, dp, name, ip->i_ino, &tp->t_firstblock,
resblks);
if (error) {
ASSERT(error != -ENOENT);
@ -2783,7 +2780,6 @@ xfs_cross_rename(
struct xfs_inode *dp2,
struct xfs_name *name2,
struct xfs_inode *ip2,
xfs_fsblock_t *first_block,
int spaceres)
{
int error = 0;
@ -2792,13 +2788,13 @@ xfs_cross_rename(
int dp2_flags = 0;
/* Swap inode number for dirent in first parent */
error = xfs_dir_replace(tp, dp1, name1, ip2->i_ino, first_block,
error = xfs_dir_replace(tp, dp1, name1, ip2->i_ino, &tp->t_firstblock,
spaceres);
if (error)
goto out_trans_abort;
/* Swap inode number for dirent in second parent */
error = xfs_dir_replace(tp, dp2, name2, ip1->i_ino, first_block,
error = xfs_dir_replace(tp, dp2, name2, ip1->i_ino, &tp->t_firstblock,
spaceres);
if (error)
goto out_trans_abort;
@ -2813,7 +2809,7 @@ xfs_cross_rename(
if (S_ISDIR(VFS_I(ip2)->i_mode)) {
error = xfs_dir_replace(tp, ip2, &xfs_name_dotdot,
dp1->i_ino, first_block,
dp1->i_ino, &tp->t_firstblock,
spaceres);
if (error)
goto out_trans_abort;
@ -2840,7 +2836,7 @@ xfs_cross_rename(
if (S_ISDIR(VFS_I(ip1)->i_mode)) {
error = xfs_dir_replace(tp, ip1, &xfs_name_dotdot,
dp2->i_ino, first_block,
dp2->i_ino, &tp->t_firstblock,
spaceres);
if (error)
goto out_trans_abort;
@ -2939,7 +2935,6 @@ xfs_rename(
struct xfs_mount *mp = src_dp->i_mount;
struct xfs_trans *tp;
struct xfs_defer_ops dfops;
xfs_fsblock_t first_block;
struct xfs_inode *wip = NULL; /* whiteout inode */
struct xfs_inode *inodes[__XFS_SORT_INODES];
int num_inodes = __XFS_SORT_INODES;
@ -3021,13 +3016,13 @@ xfs_rename(
goto out_trans_cancel;
}
xfs_defer_init(tp, &dfops, &first_block);
xfs_defer_init(tp, &dfops, &tp->t_firstblock);
/* RENAME_EXCHANGE is unique from here on. */
if (flags & RENAME_EXCHANGE)
return xfs_cross_rename(tp, src_dp, src_name, src_ip,
target_dp, target_name, target_ip,
&first_block, spaceres);
spaceres);
/*
* Set up the target.
@ -3048,8 +3043,8 @@ xfs_rename(
* to account for the ".." reference from the new entry.
*/
error = xfs_dir_createname(tp, target_dp, target_name,
src_ip->i_ino, &first_block,
spaceres);
src_ip->i_ino, &tp->t_firstblock,
spaceres);
if (error)
goto out_bmap_cancel;
@ -3088,7 +3083,8 @@ xfs_rename(
* name at the destination directory, remove it first.
*/
error = xfs_dir_replace(tp, target_dp, target_name,
src_ip->i_ino, &first_block, spaceres);
src_ip->i_ino, &tp->t_firstblock,
spaceres);
if (error)
goto out_bmap_cancel;
@ -3122,7 +3118,7 @@ xfs_rename(
* directory.
*/
error = xfs_dir_replace(tp, src_ip, &xfs_name_dotdot,
target_dp->i_ino, &first_block,
target_dp->i_ino, &tp->t_firstblock,
spaceres);
ASSERT(error != -EEXIST);
if (error)
@ -3162,10 +3158,10 @@ xfs_rename(
*/
if (wip) {
error = xfs_dir_replace(tp, src_dp, src_name, wip->i_ino,
&first_block, spaceres);
&tp->t_firstblock, spaceres);
} else
error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino,
&first_block, spaceres);
&tp->t_firstblock, spaceres);
if (error)
goto out_bmap_cancel;

9
fs/xfs/xfs_symlink.c
View File

@ -164,7 +164,6 @@ xfs_symlink(
int error = 0;
int pathlen;
struct xfs_defer_ops dfops;
xfs_fsblock_t first_block;
bool unlock_dp_on_error = false;
xfs_fileoff_t first_fsb;
xfs_filblks_t fs_blocks;
@ -246,7 +245,7 @@ xfs_symlink(
* Initialize the bmap freelist prior to calling either
* bmapi or the directory create code.
*/
xfs_defer_init(tp, &dfops, &first_block);
xfs_defer_init(tp, &dfops, &tp->t_firstblock);
/*
* Allocate an inode for the symlink.
@ -289,8 +288,8 @@ xfs_symlink(
nmaps = XFS_SYMLINK_MAPS;
error = xfs_bmapi_write(tp, ip, first_fsb, fs_blocks,
XFS_BMAPI_METADATA, &first_block, resblks,
mval, &nmaps);
XFS_BMAPI_METADATA, &tp->t_firstblock,
resblks, mval, &nmaps);
if (error)
goto out_bmap_cancel;
@ -338,7 +337,7 @@ xfs_symlink(
* Create the directory entry for the symlink.
*/
error = xfs_dir_createname(tp, dp, link_name, ip->i_ino,
&first_block, resblks);
&tp->t_firstblock, resblks);
if (error)
goto out_bmap_cancel;
xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);