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xfs: remove unnecessary null pointer checks from _read_agf callers 

Drop the null buffer pointer checks in all code that calls
xfs_alloc_read_agf and doesn't pass XFS_ALLOC_FLAG_TRYLOCK because
they're no longer necessary.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2020-01-23 17:01:20 -08:00
parent f48e2df8a8
commit 706b8c5bc7
6 changed files with 1 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
fs/xfs/libxfs/xfs_refcount.c
View File

@ -1177,8 +1177,6 @@ xfs_refcount_finish_one(
XFS_ALLOC_FLAG_FREEING, &agbp);
if (error)
return error;
if (XFS_IS_CORRUPT(tp->t_mountp, !agbp))
return -EFSCORRUPTED;
rcur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno);
if (!rcur) {
@ -1718,10 +1716,6 @@ xfs_refcount_recover_cow_leftovers(
error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp);
if (error)
goto out_trans;
if (!agbp) {
error = -ENOMEM;
goto out_trans;
}
cur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno);
/* Find all the leftover CoW staging extents. */

4
fs/xfs/scrub/agheader_repair.c
View File

@ -659,8 +659,6 @@ xrep_agfl(
error = xfs_alloc_read_agf(mp, sc->tp, sc->sa.agno, 0, &agf_bp);
if (error)
return error;
if (!agf_bp)
return -ENOMEM;
/*
* Make sure we have the AGFL buffer, as scrub might have decided it
@ -735,8 +733,6 @@ xrep_agi_find_btrees(
error = xfs_alloc_read_agf(mp, sc->tp, sc->sa.agno, 0, &agf_bp);
if (error)
return error;
if (!agf_bp)
return -ENOMEM;
/* Find the btree roots. */
error = xrep_find_ag_btree_roots(sc, agf_bp, fab, NULL);

3
fs/xfs/scrub/fscounters.c
View File

@ -83,9 +83,6 @@ xchk_fscount_warmup(
error = xfs_alloc_read_agf(mp, sc->tp, agno, 0, &agf_bp);
if (error)
break;
error = -ENOMEM;
if (!agf_bp || !agi_bp)
break;
/*
* These are supposed to be initialized by the header read

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

@ -546,8 +546,6 @@ xrep_reap_block(
error = xfs_alloc_read_agf(sc->mp, sc->tp, agno, 0, &agf_bp);
if (error)
return error;
if (!agf_bp)
return -ENOMEM;
} else {
agf_bp = sc->sa.agf_bp;
}

2
fs/xfs/xfs_discard.c
View File

@ -45,7 +45,7 @@ xfs_trim_extents(
xfs_log_force(mp, XFS_LOG_SYNC);
error = xfs_alloc_read_agf(mp, NULL, agno, 0, &agbp);
if (error || !agbp)
if (error)
goto out_put_perag;
cur = xfs_allocbt_init_cursor(mp, NULL, agbp, agno, XFS_BTNUM_CNT);

2
fs/xfs/xfs_reflink.c
View File

@ -143,8 +143,6 @@ xfs_reflink_find_shared(
error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp);
if (error)
return error;
if (!agbp)
return -ENOMEM;
cur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno);