From: Dave Chinner <david@fromorbit.com>
To: linux-xfs@vger.kernel.org
Subject: [PATCH 27/42] xfs: move the minimum agno checks into xfs_alloc_vextent_check_args
Date: Fri, 10 Feb 2023 09:18:10 +1100 [thread overview]
Message-ID: <20230209221825.3722244-28-david@fromorbit.com> (raw)
In-Reply-To: <20230209221825.3722244-1-david@fromorbit.com>
From: Dave Chinner <dchinner@redhat.com>
All of the allocation functions now extract the minimum allowed AG
from the transaction and then use it in some way. The allocation
functions that are restricted to a single AG all check if the
AG requested can be allocated from and return an error if so. These
all set args->agno appropriately.
All the allocation functions that iterate AGs use it to calculate
the scan start AG. args->agno is not set until the iterator starts
walking AGs.
Hence we can easily set up a conditional check against the minimum
AG allowed in xfs_alloc_vextent_check_args() based on whether
args->agno contains NULLAGNUMBER or not and move all the repeated
setup code to xfs_alloc_vextent_check_args(), further simplifying
the allocation functions.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
---
fs/xfs/libxfs/xfs_alloc.c | 94 +++++++++++++++------------------------
1 file changed, 36 insertions(+), 58 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index 50eb44851f23..94cea96caf5d 100644
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@ -3089,14 +3089,18 @@ xfs_alloc_read_agf(
static int
xfs_alloc_vextent_check_args(
struct xfs_alloc_arg *args,
- xfs_fsblock_t target)
+ xfs_fsblock_t target,
+ xfs_agnumber_t *minimum_agno)
{
struct xfs_mount *mp = args->mp;
xfs_agblock_t agsize;
- args->agbno = NULLAGBLOCK;
args->fsbno = NULLFSBLOCK;
+ *minimum_agno = 0;
+ if (args->tp->t_highest_agno != NULLAGNUMBER)
+ *minimum_agno = args->tp->t_highest_agno;
+
/*
* Just fix this up, for the case where the last a.g. is shorter
* (or there's only one a.g.) and the caller couldn't easily figure
@@ -3123,11 +3127,16 @@ xfs_alloc_vextent_check_args(
XFS_FSB_TO_AGBNO(mp, target) >= agsize ||
args->minlen > args->maxlen || args->minlen > agsize ||
args->mod >= args->prod) {
- args->fsbno = NULLFSBLOCK;
trace_xfs_alloc_vextent_badargs(args);
return -ENOSPC;
}
+
+ if (args->agno != NULLAGNUMBER && *minimum_agno > args->agno) {
+ trace_xfs_alloc_vextent_skip_deadlock(args);
+ return -ENOSPC;
+ }
return 0;
+
}
/*
@@ -3266,27 +3275,18 @@ xfs_alloc_vextent_this_ag(
xfs_agnumber_t agno)
{
struct xfs_mount *mp = args->mp;
- xfs_agnumber_t minimum_agno = 0;
+ xfs_agnumber_t minimum_agno;
int error;
- if (args->tp->t_highest_agno != NULLAGNUMBER)
- minimum_agno = args->tp->t_highest_agno;
-
- if (minimum_agno > agno) {
- trace_xfs_alloc_vextent_skip_deadlock(args);
- args->fsbno = NULLFSBLOCK;
- return 0;
- }
-
- error = xfs_alloc_vextent_check_args(args, XFS_AGB_TO_FSB(mp, agno, 0));
- if (error) {
- if (error == -ENOSPC)
- return 0;
- return error;
- }
-
args->agno = agno;
args->agbno = 0;
+ error = xfs_alloc_vextent_check_args(args, XFS_AGB_TO_FSB(mp, agno, 0),
+ &minimum_agno);
+ if (error) {
+ if (error == -ENOSPC)
+ return 0;
+ return error;
+ }
error = xfs_alloc_vextent_prepare_ag(args);
if (!error && args->agbp)
@@ -3400,16 +3400,15 @@ xfs_alloc_vextent_start_ag(
xfs_fsblock_t target)
{
struct xfs_mount *mp = args->mp;
- xfs_agnumber_t minimum_agno = 0;
+ xfs_agnumber_t minimum_agno;
xfs_agnumber_t start_agno;
xfs_agnumber_t rotorstep = xfs_rotorstep;
bool bump_rotor = false;
int error;
- if (args->tp->t_highest_agno != NULLAGNUMBER)
- minimum_agno = args->tp->t_highest_agno;
-
- error = xfs_alloc_vextent_check_args(args, target);
+ args->agno = NULLAGNUMBER;
+ args->agbno = NULLAGBLOCK;
+ error = xfs_alloc_vextent_check_args(args, target, &minimum_agno);
if (error) {
if (error == -ENOSPC)
return 0;
@@ -3451,14 +3450,13 @@ xfs_alloc_vextent_first_ag(
xfs_fsblock_t target)
{
struct xfs_mount *mp = args->mp;
- xfs_agnumber_t minimum_agno = 0;
+ xfs_agnumber_t minimum_agno;
xfs_agnumber_t start_agno;
int error;
- if (args->tp->t_highest_agno != NULLAGNUMBER)
- minimum_agno = args->tp->t_highest_agno;
-
- error = xfs_alloc_vextent_check_args(args, target);
+ args->agno = NULLAGNUMBER;
+ args->agbno = NULLAGBLOCK;
+ error = xfs_alloc_vextent_check_args(args, target, &minimum_agno);
if (error) {
if (error == -ENOSPC)
return 0;
@@ -3481,28 +3479,18 @@ xfs_alloc_vextent_exact_bno(
xfs_fsblock_t target)
{
struct xfs_mount *mp = args->mp;
- xfs_agnumber_t minimum_agno = 0;
+ xfs_agnumber_t minimum_agno;
int error;
- if (args->tp->t_highest_agno != NULLAGNUMBER)
- minimum_agno = args->tp->t_highest_agno;
-
- error = xfs_alloc_vextent_check_args(args, target);
+ args->agno = XFS_FSB_TO_AGNO(mp, target);
+ args->agbno = XFS_FSB_TO_AGBNO(mp, target);
+ error = xfs_alloc_vextent_check_args(args, target, &minimum_agno);
if (error) {
if (error == -ENOSPC)
return 0;
return error;
}
- args->agno = XFS_FSB_TO_AGNO(mp, target);
- if (minimum_agno > args->agno) {
- trace_xfs_alloc_vextent_skip_deadlock(args);
- args->fsbno = NULLFSBLOCK;
- return 0;
- }
-
- args->agbno = XFS_FSB_TO_AGBNO(mp, target);
-
error = xfs_alloc_vextent_prepare_ag(args);
if (!error && args->agbp)
error = xfs_alloc_ag_vextent_exact(args);
@@ -3522,32 +3510,22 @@ xfs_alloc_vextent_near_bno(
xfs_fsblock_t target)
{
struct xfs_mount *mp = args->mp;
- xfs_agnumber_t minimum_agno = 0;
+ xfs_agnumber_t minimum_agno;
bool needs_perag = args->pag == NULL;
int error;
- if (args->tp->t_highest_agno != NULLAGNUMBER)
- minimum_agno = args->tp->t_highest_agno;
-
- error = xfs_alloc_vextent_check_args(args, target);
+ args->agno = XFS_FSB_TO_AGNO(mp, target);
+ args->agbno = XFS_FSB_TO_AGBNO(mp, target);
+ error = xfs_alloc_vextent_check_args(args, target, &minimum_agno);
if (error) {
if (error == -ENOSPC)
return 0;
return error;
}
- args->agno = XFS_FSB_TO_AGNO(mp, target);
- if (minimum_agno > args->agno) {
- trace_xfs_alloc_vextent_skip_deadlock(args);
- args->fsbno = NULLFSBLOCK;
- return 0;
- }
-
if (needs_perag)
args->pag = xfs_perag_get(mp, args->agno);
- args->agbno = XFS_FSB_TO_AGBNO(mp, target);
-
error = xfs_alloc_vextent_prepare_ag(args);
if (!error && args->agbp)
error = xfs_alloc_ag_vextent_near(args);
--
2.39.0
next prev parent reply other threads:[~2023-02-09 22:26 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-09 22:17 [PATCH v3 00/42] xfs: per-ag centric allocation alogrithms Dave Chinner
2023-02-09 22:17 ` [PATCH 01/42] xfs: fix low space alloc deadlock Dave Chinner
2023-02-09 22:17 ` [PATCH 02/42] xfs: prefer free inodes at ENOSPC over chunk allocation Dave Chinner
2023-02-09 22:17 ` [PATCH 03/42] xfs: block reservation too large for minleft allocation Dave Chinner
2023-02-09 22:17 ` [PATCH 04/42] xfs: drop firstblock constraints from allocation setup Dave Chinner
2023-02-09 22:17 ` [PATCH 05/42] xfs: t_firstblock is tracking AGs not blocks Dave Chinner
2023-02-09 22:17 ` [PATCH 06/42] xfs: don't assert fail on transaction cancel with deferred ops Dave Chinner
2023-02-09 22:17 ` [PATCH 07/42] xfs: active perag reference counting Dave Chinner
2023-02-11 4:06 ` Darrick J. Wong
2023-02-09 22:17 ` [PATCH 08/42] xfs: rework the perag trace points to be perag centric Dave Chinner
2023-02-09 22:17 ` [PATCH 09/42] xfs: convert xfs_imap() to take a perag Dave Chinner
2023-02-09 22:17 ` [PATCH 10/42] xfs: use active perag references for inode allocation Dave Chinner
2023-02-09 22:17 ` [PATCH 11/42] xfs: inobt can use perags in many more places than it does Dave Chinner
2023-02-09 22:17 ` [PATCH 12/42] xfs: convert xfs_ialloc_next_ag() to an atomic Dave Chinner
2023-02-09 22:17 ` [PATCH 13/42] xfs: perags need atomic operational state Dave Chinner
2023-02-09 22:17 ` [PATCH 14/42] xfs: introduce xfs_for_each_perag_wrap() Dave Chinner
2023-02-09 22:17 ` [PATCH 15/42] xfs: rework xfs_alloc_vextent() Dave Chinner
2023-02-09 22:17 ` [PATCH 16/42] xfs: factor xfs_alloc_vextent_this_ag() for _iterate_ags() Dave Chinner
2023-02-09 22:18 ` [PATCH 17/42] xfs: combine __xfs_alloc_vextent_this_ag and xfs_alloc_ag_vextent Dave Chinner
2023-02-09 22:18 ` [PATCH 18/42] xfs: use xfs_alloc_vextent_this_ag() where appropriate Dave Chinner
2023-02-09 22:18 ` [PATCH 19/42] xfs: factor xfs_bmap_btalloc() Dave Chinner
2023-02-09 22:18 ` [PATCH 20/42] xfs: use xfs_alloc_vextent_first_ag() where appropriate Dave Chinner
2023-02-09 22:18 ` [PATCH 21/42] xfs: use xfs_alloc_vextent_start_bno() " Dave Chinner
2023-02-09 22:18 ` [PATCH 22/42] xfs: introduce xfs_alloc_vextent_near_bno() Dave Chinner
2023-02-09 22:18 ` [PATCH 23/42] xfs: introduce xfs_alloc_vextent_exact_bno() Dave Chinner
2023-02-09 22:18 ` [PATCH 24/42] xfs: introduce xfs_alloc_vextent_prepare() Dave Chinner
2023-02-09 22:18 ` [PATCH 25/42] xfs: move allocation accounting to xfs_alloc_vextent_set_fsbno() Dave Chinner
2023-02-09 22:18 ` [PATCH 26/42] xfs: fold xfs_alloc_ag_vextent() into callers Dave Chinner
2023-02-09 22:18 ` Dave Chinner [this message]
2023-02-09 22:18 ` [PATCH 28/42] xfs: convert xfs_alloc_vextent_iterate_ags() to use perag walker Dave Chinner
2023-02-09 22:18 ` [PATCH 29/42] xfs: convert trim to use for_each_perag_range Dave Chinner
2023-02-09 22:18 ` [PATCH 30/42] xfs: factor out filestreams from xfs_bmap_btalloc_nullfb Dave Chinner
2023-02-09 22:18 ` [PATCH 31/42] xfs: get rid of notinit from xfs_bmap_longest_free_extent Dave Chinner
2023-02-09 22:18 ` [PATCH 32/42] xfs: use xfs_bmap_longest_free_extent() in filestreams Dave Chinner
2023-02-09 22:18 ` [PATCH 33/42] xfs: move xfs_bmap_btalloc_filestreams() to xfs_filestreams.c Dave Chinner
2023-02-09 22:18 ` [PATCH 34/42] xfs: merge filestream AG lookup into xfs_filestream_select_ag() Dave Chinner
2023-02-09 22:18 ` [PATCH 35/42] xfs: merge new filestream AG selection " Dave Chinner
2023-02-09 22:18 ` [PATCH 36/42] xfs: remove xfs_filestream_select_ag() longest extent check Dave Chinner
2023-02-09 22:18 ` [PATCH 37/42] xfs: factor out MRU hit case in xfs_filestream_select_ag Dave Chinner
2023-02-09 22:18 ` [PATCH 38/42] xfs: track an active perag reference in filestreams Dave Chinner
2023-02-09 22:18 ` [PATCH 39/42] xfs: use for_each_perag_wrap in xfs_filestream_pick_ag Dave Chinner
2023-02-09 22:18 ` [PATCH 40/42] xfs: pass perag to filestreams tracing Dave Chinner
2023-02-09 22:18 ` [PATCH 41/42] xfs: return a referenced perag from filestreams allocator Dave Chinner
2023-02-09 22:18 ` [PATCH 42/42] xfs: refactor the filestreams allocator pick functions Dave Chinner
2023-02-10 3:09 ` [PATCH v3 00/42] xfs: per-ag centric allocation alogrithms Darrick J. Wong
2023-02-10 5:00 ` Dave Chinner
-- strict thread matches above, loose matches on Subject: below --
2023-01-18 22:44 [PATCH " Dave Chinner
2023-01-18 22:44 ` [PATCH 27/42] xfs: move the minimum agno checks into xfs_alloc_vextent_check_args Dave Chinner
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