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-rw-r--r--fs/btrfs/disk-io.c2
-rw-r--r--fs/btrfs/free-space-cache.c2
-rw-r--r--fs/gfs2/glock.c7
-rw-r--r--fs/nsfs.c29
4 files changed, 32 insertions, 8 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index ed095202942f..21f34ad0d411 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -30,6 +30,7 @@
#include <linux/ratelimit.h>
#include <linux/uuid.h>
#include <linux/semaphore.h>
+#include <linux/error-injection.h>
#include <asm/unaligned.h>
#include "ctree.h"
#include "disk-io.h"
@@ -3115,6 +3116,7 @@ recovery_tree_root:
goto fail_block_groups;
goto retry_root_backup;
}
+ALLOW_ERROR_INJECTION(open_ctree, ERRNO);
static void btrfs_end_buffer_write_sync(struct buffer_head *bh, int uptodate)
{
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 014f3c090231..a9f22ac50d6a 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -22,6 +22,7 @@
#include <linux/slab.h>
#include <linux/math64.h>
#include <linux/ratelimit.h>
+#include <linux/error-injection.h>
#include "ctree.h"
#include "free-space-cache.h"
#include "transaction.h"
@@ -332,6 +333,7 @@ static int io_ctl_init(struct btrfs_io_ctl *io_ctl, struct inode *inode,
return 0;
}
+ALLOW_ERROR_INJECTION(io_ctl_init, ERRNO);
static void io_ctl_free(struct btrfs_io_ctl *io_ctl)
{
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 11066d8647d2..90af87ff29ba 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1549,16 +1549,13 @@ static void glock_hash_walk(glock_examiner examiner, const struct gfs2_sbd *sdp)
rhashtable_walk_enter(&gl_hash_table, &iter);
do {
- gl = ERR_PTR(rhashtable_walk_start(&iter));
- if (IS_ERR(gl))
- goto walk_stop;
+ rhashtable_walk_start(&iter);
while ((gl = rhashtable_walk_next(&iter)) && !IS_ERR(gl))
if (gl->gl_name.ln_sbd == sdp &&
lockref_get_not_dead(&gl->gl_lockref))
examiner(gl);
-walk_stop:
rhashtable_walk_stop(&iter);
} while (cond_resched(), gl == ERR_PTR(-EAGAIN));
@@ -1947,7 +1944,7 @@ static void *gfs2_glock_seq_start(struct seq_file *seq, loff_t *pos)
loff_t n = *pos;
rhashtable_walk_enter(&gl_hash_table, &gi->hti);
- if (rhashtable_walk_start(&gi->hti) != 0)
+ if (rhashtable_walk_start_check(&gi->hti) != 0)
return NULL;
do {
diff --git a/fs/nsfs.c b/fs/nsfs.c
index 7c6f76d29f56..36b0772701a0 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -103,14 +103,14 @@ slow:
goto got_it;
}
-void *ns_get_path(struct path *path, struct task_struct *task,
- const struct proc_ns_operations *ns_ops)
+void *ns_get_path_cb(struct path *path, ns_get_path_helper_t *ns_get_cb,
+ void *private_data)
{
struct ns_common *ns;
void *ret;
again:
- ns = ns_ops->get(task);
+ ns = ns_get_cb(private_data);
if (!ns)
return ERR_PTR(-ENOENT);
@@ -120,6 +120,29 @@ again:
return ret;
}
+struct ns_get_path_task_args {
+ const struct proc_ns_operations *ns_ops;
+ struct task_struct *task;
+};
+
+static struct ns_common *ns_get_path_task(void *private_data)
+{
+ struct ns_get_path_task_args *args = private_data;
+
+ return args->ns_ops->get(args->task);
+}
+
+void *ns_get_path(struct path *path, struct task_struct *task,
+ const struct proc_ns_operations *ns_ops)
+{
+ struct ns_get_path_task_args args = {
+ .ns_ops = ns_ops,
+ .task = task,
+ };
+
+ return ns_get_path_cb(path, ns_get_path_task, &args);
+}
+
int open_related_ns(struct ns_common *ns,
struct ns_common *(*get_ns)(struct ns_common *ns))
{