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xfs: remove the all-mounts list

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Revert commit 0ed17f01c8 ("xfs: introduce all-mounts list for cpu
hotplug notifications") because the cpu hotplug hooks are now pointless,
so we don't need this list anymore.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong
2023-09-11 08:39:04 -07:00
parent 62334fab47
commit f5bfa695f0
2 changed files with 0 additions and 40 deletions
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1
fs/xfs/xfs_mount.h
View File

@@ -97,7 +97,6 @@ typedef struct xfs_mount {
xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
struct list_head m_mount_list; /* global mount list */
void __percpu *m_inodegc; /* percpu inodegc structures */ void __percpu *m_inodegc; /* percpu inodegc structures */
/* /*

39
fs/xfs/xfs_super.c
View File

@@ -56,28 +56,6 @@ static struct kset *xfs_kset; /* top-level xfs sysfs dir */
static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */ static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */
#endif #endif
#ifdef CONFIG_HOTPLUG_CPU
static LIST_HEAD(xfs_mount_list);
static DEFINE_SPINLOCK(xfs_mount_list_lock);
static inline void xfs_mount_list_add(struct xfs_mount *mp)
{
spin_lock(&xfs_mount_list_lock);
list_add(&mp->m_mount_list, &xfs_mount_list);
spin_unlock(&xfs_mount_list_lock);
}
static inline void xfs_mount_list_del(struct xfs_mount *mp)
{
spin_lock(&xfs_mount_list_lock);
list_del(&mp->m_mount_list);
spin_unlock(&xfs_mount_list_lock);
}
#else /* !CONFIG_HOTPLUG_CPU */
static inline void xfs_mount_list_add(struct xfs_mount *mp) {}
static inline void xfs_mount_list_del(struct xfs_mount *mp) {}
#endif
enum xfs_dax_mode { enum xfs_dax_mode {
XFS_DAX_INODE = 0, XFS_DAX_INODE = 0,
XFS_DAX_ALWAYS = 1, XFS_DAX_ALWAYS = 1,
@@ -1167,7 +1145,6 @@ xfs_fs_put_super(
xfs_freesb(mp); xfs_freesb(mp);
xchk_mount_stats_free(mp); xchk_mount_stats_free(mp);
free_percpu(mp->m_stats.xs_stats); free_percpu(mp->m_stats.xs_stats);
xfs_mount_list_del(mp);
xfs_inodegc_free_percpu(mp); xfs_inodegc_free_percpu(mp);
xfs_destroy_percpu_counters(mp); xfs_destroy_percpu_counters(mp);
xfs_destroy_mount_workqueues(mp); xfs_destroy_mount_workqueues(mp);
@@ -1576,13 +1553,6 @@ xfs_fs_fill_super(
if (error) if (error)
goto out_destroy_counters; goto out_destroy_counters;
/*
* All percpu data structures requiring cleanup when a cpu goes offline
* must be allocated before adding this @mp to the cpu-dead handler's
* mount list.
*/
xfs_mount_list_add(mp);
/* Allocate stats memory before we do operations that might use it */ /* Allocate stats memory before we do operations that might use it */
mp->m_stats.xs_stats = alloc_percpu(struct xfsstats); mp->m_stats.xs_stats = alloc_percpu(struct xfsstats);
if (!mp->m_stats.xs_stats) { if (!mp->m_stats.xs_stats) {
@@ -1780,7 +1750,6 @@ xfs_fs_fill_super(
out_free_stats: out_free_stats:
free_percpu(mp->m_stats.xs_stats); free_percpu(mp->m_stats.xs_stats);
out_destroy_inodegc: out_destroy_inodegc:
xfs_mount_list_del(mp);
xfs_inodegc_free_percpu(mp); xfs_inodegc_free_percpu(mp);
out_destroy_counters: out_destroy_counters:
xfs_destroy_percpu_counters(mp); xfs_destroy_percpu_counters(mp);
@@ -2330,14 +2299,6 @@ static int
xfs_cpu_dead( xfs_cpu_dead(
unsigned int cpu) unsigned int cpu)
{ {
struct xfs_mount *mp, *n;
spin_lock(&xfs_mount_list_lock);
list_for_each_entry_safe(mp, n, &xfs_mount_list, m_mount_list) {
spin_unlock(&xfs_mount_list_lock);
spin_lock(&xfs_mount_list_lock);
}
spin_unlock(&xfs_mount_list_lock);
return 0; return 0;
} }