From: "Darrick J. Wong" <djwong@kernel.org>
To: djwong@kernel.org
Cc: linux-xfs@vger.kernel.org, david@fromorbit.com, hch@infradead.org
Subject: [PATCH 3/9] xfs: expose sysfs knob to control inode inactivation delay
Date: Mon, 07 Jun 2021 15:25:10 -0700 [thread overview]
Message-ID: <162310471037.3465262.10128421878961173112.stgit@locust> (raw)
In-Reply-To: <162310469340.3465262.504398465311182657.stgit@locust>
From: Darrick J. Wong <djwong@kernel.org>
Allow administrators to control the length that we defer inode
inactivation. By default we'll set the delay to 2 seconds, as an
arbitrary choice between allowing for some batching of a deltree
operation, and not letting too many inodes pile up in memory.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
Documentation/admin-guide/xfs.rst | 7 +++++++
fs/xfs/xfs_globals.c | 3 +++
fs/xfs/xfs_icache.c | 3 ++-
fs/xfs/xfs_linux.h | 1 +
fs/xfs/xfs_sysctl.c | 9 +++++++++
fs/xfs/xfs_sysctl.h | 1 +
6 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/Documentation/admin-guide/xfs.rst b/Documentation/admin-guide/xfs.rst
index f9b109bfc6a6..9dd62b155fda 100644
--- a/Documentation/admin-guide/xfs.rst
+++ b/Documentation/admin-guide/xfs.rst
@@ -277,6 +277,13 @@ The following sysctls are available for the XFS filesystem:
references and returns timed-out AGs back to the free stream
pool.
+ fs.xfs.inode_gc_delay
+ (Units: centiseconds Min: 0 Default: 1 Max: 360000)
+ The amount of time to delay cleanup work that happens after a file is
+ closed by all programs. This involves clearing speculative
+ preallocations from linked files and freeing unlinked files. A higher
+ value here increases batching at a risk of background work storms.
+
fs.xfs.speculative_prealloc_lifetime
(Units: seconds Min: 1 Default: 300 Max: 86400)
The interval at which the background scanning for inodes
diff --git a/fs/xfs/xfs_globals.c b/fs/xfs/xfs_globals.c
index f62fa652c2fd..8c359b0b8fd3 100644
--- a/fs/xfs/xfs_globals.c
+++ b/fs/xfs/xfs_globals.c
@@ -28,6 +28,9 @@ xfs_param_t xfs_params = {
.rotorstep = { 1, 1, 255 },
.inherit_nodfrg = { 0, 1, 1 },
.fstrm_timer = { 1, 30*100, 3600*100},
+ .inodegc_timer = { 0, 1, 3600*100},
+
+ /* Values below here are measured in seconds */
.blockgc_timer = { 1, 300, 3600*24},
};
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index 791202236a18..432b30d0b878 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -247,7 +247,8 @@ xfs_inodegc_queue(
rcu_read_lock();
if (radix_tree_tagged(&mp->m_perag_tree, XFS_ICI_INODEGC_TAG))
- queue_delayed_work(mp->m_gc_workqueue, &mp->m_inodegc_work, 0);
+ queue_delayed_work(mp->m_gc_workqueue, &mp->m_inodegc_work,
+ msecs_to_jiffies(xfs_inodegc_centisecs * 10));
rcu_read_unlock();
}
diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h
index 7688663b9773..3d6b0a407d52 100644
--- a/fs/xfs/xfs_linux.h
+++ b/fs/xfs/xfs_linux.h
@@ -99,6 +99,7 @@ typedef __u32 xfs_nlink_t;
#define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val
#define xfs_fstrm_centisecs xfs_params.fstrm_timer.val
#define xfs_blockgc_secs xfs_params.blockgc_timer.val
+#define xfs_inodegc_centisecs xfs_params.inodegc_timer.val
#define current_cpu() (raw_smp_processor_id())
#define current_set_flags_nested(sp, f) \
diff --git a/fs/xfs/xfs_sysctl.c b/fs/xfs/xfs_sysctl.c
index 546a6cd96729..878f31d3a587 100644
--- a/fs/xfs/xfs_sysctl.c
+++ b/fs/xfs/xfs_sysctl.c
@@ -176,6 +176,15 @@ static struct ctl_table xfs_table[] = {
.extra1 = &xfs_params.fstrm_timer.min,
.extra2 = &xfs_params.fstrm_timer.max,
},
+ {
+ .procname = "inode_gc_delay",
+ .data = &xfs_params.inodegc_timer.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.inodegc_timer.min,
+ .extra2 = &xfs_params.inodegc_timer.max
+ },
{
.procname = "speculative_prealloc_lifetime",
.data = &xfs_params.blockgc_timer.val,
diff --git a/fs/xfs/xfs_sysctl.h b/fs/xfs/xfs_sysctl.h
index 7692e76ead33..a045c33c3d30 100644
--- a/fs/xfs/xfs_sysctl.h
+++ b/fs/xfs/xfs_sysctl.h
@@ -36,6 +36,7 @@ typedef struct xfs_param {
xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */
xfs_sysctl_val_t fstrm_timer; /* Filestream dir-AG assoc'n timeout. */
xfs_sysctl_val_t blockgc_timer; /* Interval between blockgc scans */
+ xfs_sysctl_val_t inodegc_timer; /* Inode inactivation scan interval */
} xfs_param_t;
/*
next prev parent reply other threads:[~2021-06-07 22:25 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-07 22:24 [PATCHSET v6 0/9] xfs: deferred inode inactivation Darrick J. Wong
2021-06-07 22:24 ` [PATCH 1/9] xfs: refactor the inode recycling code Darrick J. Wong
2021-06-07 22:59 ` Dave Chinner
2021-06-08 0:14 ` Darrick J. Wong
2021-06-07 22:25 ` [PATCH 2/9] xfs: deferred inode inactivation Darrick J. Wong
2021-06-08 0:57 ` Dave Chinner
2021-06-08 4:40 ` Darrick J. Wong
2021-06-09 1:01 ` Dave Chinner
2021-06-09 1:28 ` Darrick J. Wong
2021-06-07 22:25 ` Darrick J. Wong [this message]
2021-06-08 1:09 ` [PATCH 3/9] xfs: expose sysfs knob to control inode inactivation delay Dave Chinner
2021-06-08 2:02 ` Darrick J. Wong
2021-06-07 22:25 ` [PATCH 4/9] xfs: force inode inactivation and retry fs writes when there isn't space Darrick J. Wong
2021-06-07 22:25 ` [PATCH 5/9] xfs: force inode garbage collection before fallocate when space is low Darrick J. Wong
2021-06-08 1:26 ` Dave Chinner
2021-06-08 11:48 ` Brian Foster
2021-06-08 15:32 ` Darrick J. Wong
2021-06-08 16:06 ` Brian Foster
2021-06-08 21:55 ` Dave Chinner
2021-06-09 0:25 ` Darrick J. Wong
2021-06-07 22:25 ` [PATCH 6/9] xfs: parallelize inode inactivation Darrick J. Wong
2021-06-07 22:25 ` [PATCH 7/9] xfs: create a polled function to force " Darrick J. Wong
2021-06-07 22:25 ` [PATCH 8/9] xfs: don't run speculative preallocation gc when fs is frozen Darrick J. Wong
2021-06-07 22:25 ` [PATCH 9/9] xfs: avoid buffer deadlocks when walking fs inodes Darrick J. Wong
-- strict thread matches above, loose matches on Subject: below --
2021-03-26 0:21 [PATCHSET v5 0/9] xfs: deferred inode inactivation Darrick J. Wong
2021-03-26 0:22 ` [PATCH 3/9] xfs: expose sysfs knob to control inode inactivation delay Darrick J. Wong
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