diff options
Diffstat (limited to 'fs/aio.c')
| -rw-r--r-- | fs/aio.c | 15 |
1 files changed, 13 insertions, 2 deletions
@@ -41,6 +41,7 @@ #include <linux/percpu-refcount.h> #include <linux/mount.h> #include <linux/nospec.h> +#include <linux/swork.h> #include <asm/kmap_types.h> #include <asm/uaccess.h> @@ -118,6 +119,7 @@ struct kioctx { struct rcu_head free_rcu; struct work_struct free_work; /* see free_ioctx() */ + struct swork_event free_swork; /* see free_ioctx_users() */ /* * signals when all in-flight requests are done @@ -260,6 +262,7 @@ static int __init aio_setup(void) .mount = aio_mount, .kill_sb = kill_anon_super, }; + BUG_ON(swork_get()); aio_mnt = kern_mount(&aio_fs); if (IS_ERR(aio_mnt)) panic("Failed to create aio fs mount."); @@ -627,9 +630,9 @@ static void free_ioctx_reqs(struct percpu_ref *ref) * and ctx->users has dropped to 0, so we know no more kiocbs can be submitted - * now it's safe to cancel any that need to be. */ -static void free_ioctx_users(struct percpu_ref *ref) +static void free_ioctx_users_work(struct swork_event *sev) { - struct kioctx *ctx = container_of(ref, struct kioctx, users); + struct kioctx *ctx = container_of(sev, struct kioctx, free_swork); struct aio_kiocb *req; spin_lock_irq(&ctx->ctx_lock); @@ -647,6 +650,14 @@ static void free_ioctx_users(struct percpu_ref *ref) percpu_ref_put(&ctx->reqs); } +static void free_ioctx_users(struct percpu_ref *ref) +{ + struct kioctx *ctx = container_of(ref, struct kioctx, users); + + INIT_SWORK(&ctx->free_swork, free_ioctx_users_work); + swork_queue(&ctx->free_swork); +} + static int ioctx_add_table(struct kioctx *ctx, struct mm_struct *mm) { unsigned i, new_nr; |