* [PATCH 1/3] ext4: replace kthread freezing with auto fs freezing
2023-05-08 1:19 [PATCH 0/3] filesystems: start removal of the kthread freezer Luis Chamberlain
@ 2023-05-08 1:19 ` Luis Chamberlain
2023-05-25 16:07 ` Jan Kara
2023-05-08 1:19 ` [PATCH 2/3] btrfs: " Luis Chamberlain
` (2 subsequent siblings)
3 siblings, 1 reply; 6+ messages in thread
From: Luis Chamberlain @ 2023-05-08 1:19 UTC (permalink / raw)
To: hch, djwong, sandeen, song, rafael, gregkh, viro, jack, jikos,
bvanassche, ebiederm
Cc: mchehab, keescook, p.raghav, da.gomez, linux-fsdevel, kernel,
kexec, linux-kernel, Luis Chamberlain
The kernel power management now supports allowing the VFS
to handle filesystem freezing freezes and thawing. Take advantage
of that and remove the kthread freezing. This is needed so that we
properly really stop IO in flight without races after userspace
has been frozen. Without this we rely on kthread freezing and
its semantics are loose and error prone.
The filesystem therefore is in charge of properly dealing with
quiescing of the filesystem through its callbacks if it thinks
it knows better than how the VFS handles it.
The following Coccinelle rule was used as to remove the now superfluous
freezer calls:
make coccicheck MODE=patch SPFLAGS="--in-place --no-show-diff" COCCI=./fs-freeze-cleanup.cocci M=fs/ext4
virtual patch
@ remove_set_freezable @
expression time;
statement S, S2;
expression task, current;
@@
(
- set_freezable();
|
- if (try_to_freeze())
- continue;
|
- try_to_freeze();
|
- freezable_schedule();
+ schedule();
|
- freezable_schedule_timeout(time);
+ schedule_timeout(time);
|
- if (freezing(task)) { S }
|
- if (freezing(task)) { S }
- else
{ S2 }
|
- freezing(current)
)
@ remove_wq_freezable @
expression WQ_E, WQ_ARG1, WQ_ARG2, WQ_ARG3, WQ_ARG4;
identifier fs_wq_fn;
@@
(
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_FREEZABLE,
+ WQ_ARG2,
...);
|
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_FREEZABLE | WQ_ARG3,
+ WQ_ARG2 | WQ_ARG3,
...);
|
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_ARG3 | WQ_FREEZABLE,
+ WQ_ARG2 | WQ_ARG3,
...);
|
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_ARG3 | WQ_FREEZABLE | WQ_ARG4,
+ WQ_ARG2 | WQ_ARG3 | WQ_ARG4,
...);
|
WQ_E =
- WQ_ARG1 | WQ_FREEZABLE
+ WQ_ARG1
|
WQ_E =
- WQ_ARG1 | WQ_FREEZABLE | WQ_ARG3
+ WQ_ARG1 | WQ_ARG3
|
fs_wq_fn(
- WQ_FREEZABLE | WQ_ARG2 | WQ_ARG3
+ WQ_ARG2 | WQ_ARG3
)
|
fs_wq_fn(
- WQ_FREEZABLE | WQ_ARG2
+ WQ_ARG2
)
|
fs_wq_fn(
- WQ_FREEZABLE
+ 0
)
)
@ add_auto_flag @
expression E1;
identifier fs_type;
@@
struct file_system_type fs_type = {
.fs_flags = E1
+ | FS_AUTOFREEZE
,
};
Generated-by: Coccinelle SmPL
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
fs/ext4/super.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index d39f386e9baf..1f436938d8be 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -136,7 +136,7 @@ static struct file_system_type ext2_fs_type = {
.init_fs_context = ext4_init_fs_context,
.parameters = ext4_param_specs,
.kill_sb = kill_block_super,
- .fs_flags = FS_REQUIRES_DEV,
+ .fs_flags = FS_REQUIRES_DEV | FS_AUTOFREEZE,
};
MODULE_ALIAS_FS("ext2");
MODULE_ALIAS("ext2");
@@ -152,7 +152,7 @@ static struct file_system_type ext3_fs_type = {
.init_fs_context = ext4_init_fs_context,
.parameters = ext4_param_specs,
.kill_sb = kill_block_super,
- .fs_flags = FS_REQUIRES_DEV,
+ .fs_flags = FS_REQUIRES_DEV | FS_AUTOFREEZE,
};
MODULE_ALIAS_FS("ext3");
MODULE_ALIAS("ext3");
@@ -3790,7 +3790,6 @@ static int ext4_lazyinit_thread(void *arg)
unsigned long next_wakeup, cur;
BUG_ON(NULL == eli);
- set_freezable();
cont_thread:
while (true) {
@@ -3842,8 +3841,6 @@ static int ext4_lazyinit_thread(void *arg)
}
mutex_unlock(&eli->li_list_mtx);
- try_to_freeze();
-
cur = jiffies;
if ((time_after_eq(cur, next_wakeup)) ||
(MAX_JIFFY_OFFSET == next_wakeup)) {
@@ -7245,7 +7242,7 @@ static struct file_system_type ext4_fs_type = {
.init_fs_context = ext4_init_fs_context,
.parameters = ext4_param_specs,
.kill_sb = kill_block_super,
- .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP,
+ .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_AUTOFREEZE,
};
MODULE_ALIAS_FS("ext4");
--
2.39.2
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH 1/3] ext4: replace kthread freezing with auto fs freezing
2023-05-08 1:19 ` [PATCH 1/3] ext4: replace kthread freezing with auto fs freezing Luis Chamberlain
@ 2023-05-25 16:07 ` Jan Kara
0 siblings, 0 replies; 6+ messages in thread
From: Jan Kara @ 2023-05-25 16:07 UTC (permalink / raw)
To: Luis Chamberlain
Cc: hch, djwong, sandeen, song, rafael, gregkh, viro, jack, jikos,
bvanassche, ebiederm, mchehab, keescook, p.raghav, da.gomez,
linux-fsdevel, kernel, kexec, linux-kernel
On Sun 07-05-23 18:19:25, Luis Chamberlain wrote:
> The kernel power management now supports allowing the VFS
> to handle filesystem freezing freezes and thawing. Take advantage
> of that and remove the kthread freezing. This is needed so that we
> properly really stop IO in flight without races after userspace
> has been frozen. Without this we rely on kthread freezing and
> its semantics are loose and error prone.
>
> The filesystem therefore is in charge of properly dealing with
> quiescing of the filesystem through its callbacks if it thinks
> it knows better than how the VFS handles it.
>
> The following Coccinelle rule was used as to remove the now superfluous
> freezer calls:
>
> make coccicheck MODE=patch SPFLAGS="--in-place --no-show-diff" COCCI=./fs-freeze-cleanup.cocci M=fs/ext4
>
> virtual patch
>
> @ remove_set_freezable @
> expression time;
> statement S, S2;
> expression task, current;
> @@
>
> (
> - set_freezable();
> |
> - if (try_to_freeze())
> - continue;
> |
> - try_to_freeze();
> |
> - freezable_schedule();
> + schedule();
> |
> - freezable_schedule_timeout(time);
> + schedule_timeout(time);
> |
> - if (freezing(task)) { S }
> |
> - if (freezing(task)) { S }
> - else
> { S2 }
> |
> - freezing(current)
> )
>
> @ remove_wq_freezable @
> expression WQ_E, WQ_ARG1, WQ_ARG2, WQ_ARG3, WQ_ARG4;
> identifier fs_wq_fn;
> @@
>
> (
> WQ_E = alloc_workqueue(WQ_ARG1,
> - WQ_ARG2 | WQ_FREEZABLE,
> + WQ_ARG2,
> ...);
> |
> WQ_E = alloc_workqueue(WQ_ARG1,
> - WQ_ARG2 | WQ_FREEZABLE | WQ_ARG3,
> + WQ_ARG2 | WQ_ARG3,
> ...);
> |
> WQ_E = alloc_workqueue(WQ_ARG1,
> - WQ_ARG2 | WQ_ARG3 | WQ_FREEZABLE,
> + WQ_ARG2 | WQ_ARG3,
> ...);
> |
> WQ_E = alloc_workqueue(WQ_ARG1,
> - WQ_ARG2 | WQ_ARG3 | WQ_FREEZABLE | WQ_ARG4,
> + WQ_ARG2 | WQ_ARG3 | WQ_ARG4,
> ...);
> |
> WQ_E =
> - WQ_ARG1 | WQ_FREEZABLE
> + WQ_ARG1
> |
> WQ_E =
> - WQ_ARG1 | WQ_FREEZABLE | WQ_ARG3
> + WQ_ARG1 | WQ_ARG3
> |
> fs_wq_fn(
> - WQ_FREEZABLE | WQ_ARG2 | WQ_ARG3
> + WQ_ARG2 | WQ_ARG3
> )
> |
> fs_wq_fn(
> - WQ_FREEZABLE | WQ_ARG2
> + WQ_ARG2
> )
> |
> fs_wq_fn(
> - WQ_FREEZABLE
> + 0
> )
> )
>
> @ add_auto_flag @
> expression E1;
> identifier fs_type;
> @@
>
> struct file_system_type fs_type = {
> .fs_flags = E1
> + | FS_AUTOFREEZE
> ,
> };
>
> Generated-by: Coccinelle SmPL
> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
I guess we can also usually remove the #include <linux/freezer.h> line? At
least in ext4 it is the case I believe. Otherwise this looks good.
Honza
> ---
> fs/ext4/super.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index d39f386e9baf..1f436938d8be 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -136,7 +136,7 @@ static struct file_system_type ext2_fs_type = {
> .init_fs_context = ext4_init_fs_context,
> .parameters = ext4_param_specs,
> .kill_sb = kill_block_super,
> - .fs_flags = FS_REQUIRES_DEV,
> + .fs_flags = FS_REQUIRES_DEV | FS_AUTOFREEZE,
> };
> MODULE_ALIAS_FS("ext2");
> MODULE_ALIAS("ext2");
> @@ -152,7 +152,7 @@ static struct file_system_type ext3_fs_type = {
> .init_fs_context = ext4_init_fs_context,
> .parameters = ext4_param_specs,
> .kill_sb = kill_block_super,
> - .fs_flags = FS_REQUIRES_DEV,
> + .fs_flags = FS_REQUIRES_DEV | FS_AUTOFREEZE,
> };
> MODULE_ALIAS_FS("ext3");
> MODULE_ALIAS("ext3");
> @@ -3790,7 +3790,6 @@ static int ext4_lazyinit_thread(void *arg)
> unsigned long next_wakeup, cur;
>
> BUG_ON(NULL == eli);
> - set_freezable();
>
> cont_thread:
> while (true) {
> @@ -3842,8 +3841,6 @@ static int ext4_lazyinit_thread(void *arg)
> }
> mutex_unlock(&eli->li_list_mtx);
>
> - try_to_freeze();
> -
> cur = jiffies;
> if ((time_after_eq(cur, next_wakeup)) ||
> (MAX_JIFFY_OFFSET == next_wakeup)) {
> @@ -7245,7 +7242,7 @@ static struct file_system_type ext4_fs_type = {
> .init_fs_context = ext4_init_fs_context,
> .parameters = ext4_param_specs,
> .kill_sb = kill_block_super,
> - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP,
> + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_AUTOFREEZE,
> };
> MODULE_ALIAS_FS("ext4");
>
> --
> 2.39.2
>
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 2/3] btrfs: replace kthread freezing with auto fs freezing
2023-05-08 1:19 [PATCH 0/3] filesystems: start removal of the kthread freezer Luis Chamberlain
2023-05-08 1:19 ` [PATCH 1/3] ext4: replace kthread freezing with auto fs freezing Luis Chamberlain
@ 2023-05-08 1:19 ` Luis Chamberlain
2023-05-08 1:19 ` [PATCH 3/3] xfs: " Luis Chamberlain
2023-05-12 7:31 ` [PATCH 0/3] filesystems: start removal of the kthread freezer David Sterba
3 siblings, 0 replies; 6+ messages in thread
From: Luis Chamberlain @ 2023-05-08 1:19 UTC (permalink / raw)
To: hch, djwong, sandeen, song, rafael, gregkh, viro, jack, jikos,
bvanassche, ebiederm
Cc: mchehab, keescook, p.raghav, da.gomez, linux-fsdevel, kernel,
kexec, linux-kernel, Luis Chamberlain
The kernel power management now supports allowing the VFS
to handle filesystem freezing freezes and thawing. Take advantage
of that and remove the kthread freezing. This is needed so that we
properly really stop IO in flight without races after userspace
has been frozen. Without this we rely on kthread freezing and
its semantics are loose and error prone.
The filesystem therefore is in charge of properly dealing with
quiescing of the filesystem through its callbacks if it thinks
it knows better than how the VFS handles it.
The following Coccinelle rule was used as to remove the now superfluous
freezer calls:
make coccicheck MODE=patch SPFLAGS="--in-place --no-show-diff" COCCI=./fs-freeze-cleanup.cocci M=fs/btrfs
virtual patch
@ remove_set_freezable @
expression time;
statement S, S2;
expression task, current;
@@
(
- set_freezable();
|
- if (try_to_freeze())
- continue;
|
- try_to_freeze();
|
- freezable_schedule();
+ schedule();
|
- freezable_schedule_timeout(time);
+ schedule_timeout(time);
|
- if (freezing(task)) { S }
|
- if (freezing(task)) { S }
- else
{ S2 }
|
- freezing(current)
)
@ remove_wq_freezable @
expression WQ_E, WQ_ARG1, WQ_ARG2, WQ_ARG3, WQ_ARG4;
identifier fs_wq_fn;
@@
(
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_FREEZABLE,
+ WQ_ARG2,
...);
|
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_FREEZABLE | WQ_ARG3,
+ WQ_ARG2 | WQ_ARG3,
...);
|
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_ARG3 | WQ_FREEZABLE,
+ WQ_ARG2 | WQ_ARG3,
...);
|
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_ARG3 | WQ_FREEZABLE | WQ_ARG4,
+ WQ_ARG2 | WQ_ARG3 | WQ_ARG4,
...);
|
WQ_E =
- WQ_ARG1 | WQ_FREEZABLE
+ WQ_ARG1
|
WQ_E =
- WQ_ARG1 | WQ_FREEZABLE | WQ_ARG3
+ WQ_ARG1 | WQ_ARG3
|
fs_wq_fn(
- WQ_FREEZABLE | WQ_ARG2 | WQ_ARG3
+ WQ_ARG2 | WQ_ARG3
)
|
fs_wq_fn(
- WQ_FREEZABLE | WQ_ARG2
+ WQ_ARG2
)
|
fs_wq_fn(
- WQ_FREEZABLE
+ 0
)
)
@ add_auto_flag @
expression E1;
identifier fs_type;
@@
struct file_system_type fs_type = {
.fs_flags = E1
+ | FS_AUTOFREEZE
,
};
Generated-by: Coccinelle SmPL
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
fs/btrfs/disk-io.c | 4 ++--
fs/btrfs/scrub.c | 2 +-
fs/btrfs/super.c | 4 ++--
3 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 59ea049fe7ee..6552ade25ef2 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2176,7 +2176,7 @@ static void btrfs_init_qgroup(struct btrfs_fs_info *fs_info)
static int btrfs_init_workqueues(struct btrfs_fs_info *fs_info)
{
u32 max_active = fs_info->thread_pool_size;
- unsigned int flags = WQ_MEM_RECLAIM | WQ_FREEZABLE | WQ_UNBOUND;
+ unsigned int flags = WQ_MEM_RECLAIM | WQ_UNBOUND;
fs_info->workers =
btrfs_alloc_workqueue(fs_info, "worker", flags, max_active, 16);
@@ -2217,7 +2217,7 @@ static int btrfs_init_workqueues(struct btrfs_fs_info *fs_info)
fs_info->qgroup_rescan_workers =
btrfs_alloc_workqueue(fs_info, "qgroup-rescan", flags, 1, 0);
fs_info->discard_ctl.discard_workers =
- alloc_workqueue("btrfs_discard", WQ_UNBOUND | WQ_FREEZABLE, 1);
+ alloc_workqueue("btrfs_discard", WQ_UNBOUND, 1);
if (!(fs_info->workers && fs_info->hipri_workers &&
fs_info->delalloc_workers && fs_info->flush_workers &&
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 836725a19661..55b82a55de19 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -2727,7 +2727,7 @@ static noinline_for_stack int scrub_workers_get(struct btrfs_fs_info *fs_info,
{
struct workqueue_struct *scrub_workers = NULL;
struct workqueue_struct *scrub_wr_comp = NULL;
- unsigned int flags = WQ_FREEZABLE | WQ_UNBOUND;
+ unsigned int flags = WQ_UNBOUND;
int max_active = fs_info->thread_pool_size;
int ret = -ENOMEM;
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 0f2f915e42b0..2c08c2a37b8b 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -2145,7 +2145,7 @@ static struct file_system_type btrfs_fs_type = {
.name = "btrfs",
.mount = btrfs_mount,
.kill_sb = btrfs_kill_super,
- .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA,
+ .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_AUTOFREEZE,
};
static struct file_system_type btrfs_root_fs_type = {
@@ -2153,7 +2153,7 @@ static struct file_system_type btrfs_root_fs_type = {
.name = "btrfs",
.mount = btrfs_mount_root,
.kill_sb = btrfs_kill_super,
- .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_ALLOW_IDMAP,
+ .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_ALLOW_IDMAP | FS_AUTOFREEZE,
};
MODULE_ALIAS_FS("btrfs");
--
2.39.2
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH 3/3] xfs: replace kthread freezing with auto fs freezing
2023-05-08 1:19 [PATCH 0/3] filesystems: start removal of the kthread freezer Luis Chamberlain
2023-05-08 1:19 ` [PATCH 1/3] ext4: replace kthread freezing with auto fs freezing Luis Chamberlain
2023-05-08 1:19 ` [PATCH 2/3] btrfs: " Luis Chamberlain
@ 2023-05-08 1:19 ` Luis Chamberlain
2023-05-12 7:31 ` [PATCH 0/3] filesystems: start removal of the kthread freezer David Sterba
3 siblings, 0 replies; 6+ messages in thread
From: Luis Chamberlain @ 2023-05-08 1:19 UTC (permalink / raw)
To: hch, djwong, sandeen, song, rafael, gregkh, viro, jack, jikos,
bvanassche, ebiederm
Cc: mchehab, keescook, p.raghav, da.gomez, linux-fsdevel, kernel,
kexec, linux-kernel, Luis Chamberlain
The kernel power management now supports allowing the VFS
to handle filesystem freezing freezes and thawing. Take advantage
of that and remove the kthread freezing. This is needed so that we
properly really stop IO in flight without races after userspace
has been frozen. Without this we rely on kthread freezing and
its semantics are loose and error prone.
The filesystem therefore is in charge of properly dealing with
quiescing of the filesystem through its callbacks if it thinks
it knows better than how the VFS handles it.
The following Coccinelle rule was used as to remove the now superfluous
freezer calls:
make coccicheck MODE=patch SPFLAGS="--in-place --no-show-diff" COCCI=./fs-freeze-cleanup.cocci M=fs/xfs
virtual patch
@ remove_set_freezable @
expression time;
statement S, S2;
expression task, current;
@@
(
- set_freezable();
|
- if (try_to_freeze())
- continue;
|
- try_to_freeze();
|
- freezable_schedule();
+ schedule();
|
- freezable_schedule_timeout(time);
+ schedule_timeout(time);
|
- if (freezing(task)) { S }
|
- if (freezing(task)) { S }
- else
{ S2 }
|
- freezing(current)
)
@ remove_wq_freezable @
expression WQ_E, WQ_ARG1, WQ_ARG2, WQ_ARG3, WQ_ARG4;
identifier fs_wq_fn;
@@
(
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_FREEZABLE,
+ WQ_ARG2,
...);
|
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_FREEZABLE | WQ_ARG3,
+ WQ_ARG2 | WQ_ARG3,
...);
|
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_ARG3 | WQ_FREEZABLE,
+ WQ_ARG2 | WQ_ARG3,
...);
|
WQ_E = alloc_workqueue(WQ_ARG1,
- WQ_ARG2 | WQ_ARG3 | WQ_FREEZABLE | WQ_ARG4,
+ WQ_ARG2 | WQ_ARG3 | WQ_ARG4,
...);
|
WQ_E =
- WQ_ARG1 | WQ_FREEZABLE
+ WQ_ARG1
|
WQ_E =
- WQ_ARG1 | WQ_FREEZABLE | WQ_ARG3
+ WQ_ARG1 | WQ_ARG3
|
fs_wq_fn(
- WQ_FREEZABLE | WQ_ARG2 | WQ_ARG3
+ WQ_ARG2 | WQ_ARG3
)
|
fs_wq_fn(
- WQ_FREEZABLE | WQ_ARG2
+ WQ_ARG2
)
|
fs_wq_fn(
- WQ_FREEZABLE
+ 0
)
)
@ add_auto_flag @
expression E1;
identifier fs_type;
@@
struct file_system_type fs_type = {
.fs_flags = E1
+ | FS_AUTOFREEZE
,
};
Generated-by: Coccinelle SmPL
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
fs/xfs/xfs_log.c | 3 +--
fs/xfs/xfs_log_cil.c | 2 +-
fs/xfs/xfs_mru_cache.c | 2 +-
fs/xfs/xfs_pwork.c | 2 +-
fs/xfs/xfs_super.c | 16 ++++++++--------
fs/xfs/xfs_trans_ail.c | 3 ---
6 files changed, 12 insertions(+), 16 deletions(-)
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index fc61cc024023..fbdbc81dc8ad 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -1678,8 +1678,7 @@ xlog_alloc_log(
log->l_iclog->ic_prev = prev_iclog; /* re-write 1st prev ptr */
log->l_ioend_workqueue = alloc_workqueue("xfs-log/%s",
- XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM |
- WQ_HIGHPRI),
+ XFS_WQFLAGS(WQ_MEM_RECLAIM | WQ_HIGHPRI),
0, mp->m_super->s_id);
if (!log->l_ioend_workqueue)
goto out_free_iclog;
diff --git a/fs/xfs/xfs_log_cil.c b/fs/xfs/xfs_log_cil.c
index eccbfb99e894..bcc5c8234ce8 100644
--- a/fs/xfs/xfs_log_cil.c
+++ b/fs/xfs/xfs_log_cil.c
@@ -1842,7 +1842,7 @@ xlog_cil_init(
* concurrency the log spinlocks will be exposed to.
*/
cil->xc_push_wq = alloc_workqueue("xfs-cil/%s",
- XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM | WQ_UNBOUND),
+ XFS_WQFLAGS(WQ_MEM_RECLAIM | WQ_UNBOUND),
4, log->l_mp->m_super->s_id);
if (!cil->xc_push_wq)
goto out_destroy_cil;
diff --git a/fs/xfs/xfs_mru_cache.c b/fs/xfs/xfs_mru_cache.c
index f85e3b07ab44..98832a84be66 100644
--- a/fs/xfs/xfs_mru_cache.c
+++ b/fs/xfs/xfs_mru_cache.c
@@ -294,7 +294,7 @@ int
xfs_mru_cache_init(void)
{
xfs_mru_reap_wq = alloc_workqueue("xfs_mru_cache",
- XFS_WQFLAGS(WQ_MEM_RECLAIM | WQ_FREEZABLE), 1);
+ XFS_WQFLAGS(WQ_MEM_RECLAIM), 1);
if (!xfs_mru_reap_wq)
return -ENOMEM;
return 0;
diff --git a/fs/xfs/xfs_pwork.c b/fs/xfs/xfs_pwork.c
index c283b801cc5d..3f5bf53f8778 100644
--- a/fs/xfs/xfs_pwork.c
+++ b/fs/xfs/xfs_pwork.c
@@ -72,7 +72,7 @@ xfs_pwork_init(
trace_xfs_pwork_init(mp, nr_threads, current->pid);
pctl->wq = alloc_workqueue("%s-%d",
- WQ_UNBOUND | WQ_SYSFS | WQ_FREEZABLE, nr_threads, tag,
+ WQ_UNBOUND | WQ_SYSFS, nr_threads, tag,
current->pid);
if (!pctl->wq)
return -ENOMEM;
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 7e706255f165..a3860a1267ad 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -537,37 +537,37 @@ xfs_init_mount_workqueues(
struct xfs_mount *mp)
{
mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s",
- XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM),
+ XFS_WQFLAGS(WQ_MEM_RECLAIM),
1, mp->m_super->s_id);
if (!mp->m_buf_workqueue)
goto out;
mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s",
- XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM),
+ XFS_WQFLAGS(WQ_MEM_RECLAIM),
0, mp->m_super->s_id);
if (!mp->m_unwritten_workqueue)
goto out_destroy_buf;
mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s",
- XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM),
+ XFS_WQFLAGS(WQ_MEM_RECLAIM),
0, mp->m_super->s_id);
if (!mp->m_reclaim_workqueue)
goto out_destroy_unwritten;
mp->m_blockgc_wq = alloc_workqueue("xfs-blockgc/%s",
- XFS_WQFLAGS(WQ_UNBOUND | WQ_FREEZABLE | WQ_MEM_RECLAIM),
+ XFS_WQFLAGS(WQ_UNBOUND | WQ_MEM_RECLAIM),
0, mp->m_super->s_id);
if (!mp->m_blockgc_wq)
goto out_destroy_reclaim;
mp->m_inodegc_wq = alloc_workqueue("xfs-inodegc/%s",
- XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM),
+ XFS_WQFLAGS(WQ_MEM_RECLAIM),
1, mp->m_super->s_id);
if (!mp->m_inodegc_wq)
goto out_destroy_blockgc;
mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s",
- XFS_WQFLAGS(WQ_FREEZABLE), 0, mp->m_super->s_id);
+ XFS_WQFLAGS(0), 0, mp->m_super->s_id);
if (!mp->m_sync_workqueue)
goto out_destroy_inodegc;
@@ -1992,7 +1992,7 @@ static struct file_system_type xfs_fs_type = {
.init_fs_context = xfs_init_fs_context,
.parameters = xfs_fs_parameters,
.kill_sb = kill_block_super,
- .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP,
+ .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_AUTOFREEZE,
};
MODULE_ALIAS_FS("xfs");
@@ -2231,7 +2231,7 @@ xfs_init_workqueues(void)
* max_active value for this workqueue.
*/
xfs_alloc_wq = alloc_workqueue("xfsalloc",
- XFS_WQFLAGS(WQ_MEM_RECLAIM | WQ_FREEZABLE), 0);
+ XFS_WQFLAGS(WQ_MEM_RECLAIM), 0);
if (!xfs_alloc_wq)
return -ENOMEM;
diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
index 7d4109af193e..03a9bb64927c 100644
--- a/fs/xfs/xfs_trans_ail.c
+++ b/fs/xfs/xfs_trans_ail.c
@@ -600,7 +600,6 @@ xfsaild(
unsigned int noreclaim_flag;
noreclaim_flag = memalloc_noreclaim_save();
- set_freezable();
while (1) {
if (tout && tout <= 20)
@@ -666,8 +665,6 @@ xfsaild(
__set_current_state(TASK_RUNNING);
- try_to_freeze();
-
tout = xfsaild_push(ailp);
}
--
2.39.2
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH 0/3] filesystems: start removal of the kthread freezer
2023-05-08 1:19 [PATCH 0/3] filesystems: start removal of the kthread freezer Luis Chamberlain
` (2 preceding siblings ...)
2023-05-08 1:19 ` [PATCH 3/3] xfs: " Luis Chamberlain
@ 2023-05-12 7:31 ` David Sterba
3 siblings, 0 replies; 6+ messages in thread
From: David Sterba @ 2023-05-12 7:31 UTC (permalink / raw)
To: Luis Chamberlain
Cc: hch, djwong, sandeen, song, rafael, gregkh, viro, jack, jikos,
bvanassche, ebiederm, mchehab, keescook, p.raghav, da.gomez,
linux-fsdevel, kernel, kexec, linux-kernel
On Sun, May 07, 2023 at 06:19:24PM -0700, Luis Chamberlain wrote:
> Here's 3 filesystems converted over to remove the kthread freezer.
>
> Luis Chamberlain (3):
> ext4: replace kthread freezing with auto fs freezing
> btrfs: replace kthread freezing with auto fs freezing
> xfs: replace kthread freezing with auto fs freezing
All patches add FS_AUTOFREEZE but I don't see it defined anywhere, it's
not in linux-next either. Also please drop the SMPL code from the
changelog, it's not necessary for such targeted change (unlike for a
tree-wide one).
^ permalink raw reply [flat|nested] 6+ messages in thread