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xfs: check tp->t_dqinfo value instead of the XFS_TRANS_DQ_DIRTY flag

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Nowadays the only things that the XFS_TRANS_DQ_DIRTY flag seems to do
are indicates the tp->t_dqinfo->dqs[XFS_QM_TRANS_{USR,GRP,PRJ}] values
changed and check in xfs_trans_apply_dquot_deltas() and the unreserve
variant xfs_trans_unreserve_and_mod_dquots(). Actually, we also can
use the tp->t_dqinfo value instead of the XFS_TRANS_DQ_DIRTY flag, that
is to say, we allocate the new tp->t_dqinfo only when the qtrx values
changed, so the tp->t_dqinfo value isn't NULL equals the XFS_TRANS_DQ_DIRTY
flag is set, we only need to check if tp->t_dqinfo == NULL in
xfs_trans_apply_dquot_deltas() and its unreserve variant to determine
whether lock all of the dquots and join them to the transaction.

Signed-off-by: Kaixu Xia <kaixuxia@tencent.com>
Reviewed-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:
Kaixu Xia 2020-12-03 16:41:21 -08:00 committed by Darrick J. Wong
parent a9382fa9a9
commit 04a58620a1
3 changed files with 3 additions and 19 deletions
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1
fs/xfs/libxfs/xfs_shared.h
View File

@ -62,7 +62,6 @@ void xfs_log_get_max_trans_res(struct xfs_mount *mp,
#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */
#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */
#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */
#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */
#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */
#define XFS_TRANS_NO_WRITECOUNT 0x40 /* do not elevate SB writecount */
#define XFS_TRANS_RES_FDBLKS 0x80 /* reserve newly freed blocks */

8
fs/xfs/xfs_inode.c
View File

@ -959,7 +959,6 @@ xfs_dir_ialloc(
xfs_buf_t *ialloc_context = NULL;
int code;
void *dqinfo;
uint tflags;
tp = *tpp;
ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES);
@ -1018,12 +1017,9 @@ xfs_dir_ialloc(
* and attach it to the next transaction.
*/
dqinfo = NULL;
tflags = 0;
if (tp->t_dqinfo) {
dqinfo = (void *)tp->t_dqinfo;
tp->t_dqinfo = NULL;
tflags = tp->t_flags & XFS_TRANS_DQ_DIRTY;
tp->t_flags &= ~(XFS_TRANS_DQ_DIRTY);
}
code = xfs_trans_roll(&tp);
@ -1031,10 +1027,8 @@ xfs_dir_ialloc(
/*
* Re-attach the quota info that we detached from prev trx.
*/
if (dqinfo) {
if (dqinfo)
tp->t_dqinfo = dqinfo;
tp->t_flags |= tflags;
}
if (code) {
xfs_buf_relse(ialloc_context);

13
fs/xfs/xfs_trans_dquot.c
View File

@ -84,13 +84,6 @@ xfs_trans_dup_dqinfo(
xfs_trans_alloc_dqinfo(ntp);
/*
* Because the quota blk reservation is carried forward,
* it is also necessary to carry forward the DQ_DIRTY flag.
*/
if (otp->t_flags & XFS_TRANS_DQ_DIRTY)
ntp->t_flags |= XFS_TRANS_DQ_DIRTY;
for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) {
oqa = otp->t_dqinfo->dqs[j];
nqa = ntp->t_dqinfo->dqs[j];
@ -270,8 +263,6 @@ xfs_trans_mod_dquot(
if (delta)
trace_xfs_trans_mod_dquot_after(qtrx);
tp->t_flags |= XFS_TRANS_DQ_DIRTY;
}
@ -348,7 +339,7 @@ xfs_trans_apply_dquot_deltas(
int64_t totalbdelta;
int64_t totalrtbdelta;
if (!(tp->t_flags & XFS_TRANS_DQ_DIRTY))
if (!tp->t_dqinfo)
return;
ASSERT(tp->t_dqinfo);
@ -490,7 +481,7 @@ xfs_trans_unreserve_and_mod_dquots(
struct xfs_dqtrx *qtrx, *qa;
bool locked;
if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY))
if (!tp->t_dqinfo)
return;
for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) {