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authorDavid Howells <dhowells@redhat.com>2017-11-02 15:27:44 +0000
committerDavid Howells <dhowells@redhat.com>2017-11-13 15:38:16 +0000
commit5e4def20381678ba3ce0a4e117f97e378ecd81bc (patch)
tree455d2c682d9430a06bf2eb91b12e7eba9b1a645e /fs
parent81445e63e67a1e98b1c2575fa2b406d4289d2754 (diff)
downloadlinux-5e4def20381678ba3ce0a4e117f97e378ecd81bc.tar.bz2
Pass mode to wait_on_atomic_t() action funcs and provide default actions
Make wait_on_atomic_t() pass the TASK_* mode onto its action function as an extra argument and make it 'unsigned int throughout. Also, consolidate a bunch of identical action functions into a default function that can do the appropriate thing for the mode. Also, change the argument name in the bit_wait*() function declarations to reflect the fact that it's the mode and not the bit number. [Peter Z gives this a grudging ACK, but thinks that the whole atomic_t wait should be done differently, though he's not immediately sure as to how] Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Peter Zijlstra <peterz@infradead.org> cc: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/afs/rxrpc.c8
-rw-r--r--fs/btrfs/extent-tree.c27
-rw-r--r--fs/fscache/cookie.c2
-rw-r--r--fs/fscache/internal.h2
-rw-r--r--fs/fscache/main.c9
-rw-r--r--fs/nfs/inode.c4
-rw-r--r--fs/nfs/internal.h2
-rw-r--r--fs/ocfs2/filecheck.c8
8 files changed, 9 insertions, 53 deletions
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index bb1e2caa1720..77f5420a1a24 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -41,12 +41,6 @@ static void afs_charge_preallocation(struct work_struct *);
static DECLARE_WORK(afs_charge_preallocation_work, afs_charge_preallocation);
-static int afs_wait_atomic_t(atomic_t *p)
-{
- schedule();
- return 0;
-}
-
/*
* open an RxRPC socket and bind it to be a server for callback notifications
* - the socket is left in blocking mode and non-blocking ops use MSG_DONTWAIT
@@ -121,7 +115,7 @@ void afs_close_socket(void)
}
_debug("outstanding %u", atomic_read(&afs_outstanding_calls));
- wait_on_atomic_t(&afs_outstanding_calls, afs_wait_atomic_t,
+ wait_on_atomic_t(&afs_outstanding_calls, atomic_t_wait,
TASK_UNINTERRUPTIBLE);
_debug("no outstanding calls");
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index e2d7e86b51d1..24cefde30e30 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4016,16 +4016,9 @@ void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr)
btrfs_put_block_group(bg);
}
-static int btrfs_wait_nocow_writers_atomic_t(atomic_t *a)
-{
- schedule();
- return 0;
-}
-
void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg)
{
- wait_on_atomic_t(&bg->nocow_writers,
- btrfs_wait_nocow_writers_atomic_t,
+ wait_on_atomic_t(&bg->nocow_writers, atomic_t_wait,
TASK_UNINTERRUPTIBLE);
}
@@ -6595,12 +6588,6 @@ void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info,
btrfs_put_block_group(bg);
}
-static int btrfs_wait_bg_reservations_atomic_t(atomic_t *a)
-{
- schedule();
- return 0;
-}
-
void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg)
{
struct btrfs_space_info *space_info = bg->space_info;
@@ -6623,8 +6610,7 @@ void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg)
down_write(&space_info->groups_sem);
up_write(&space_info->groups_sem);
- wait_on_atomic_t(&bg->reservations,
- btrfs_wait_bg_reservations_atomic_t,
+ wait_on_atomic_t(&bg->reservations, atomic_t_wait,
TASK_UNINTERRUPTIBLE);
}
@@ -11106,12 +11092,6 @@ int btrfs_start_write_no_snapshotting(struct btrfs_root *root)
return 1;
}
-static int wait_snapshotting_atomic_t(atomic_t *a)
-{
- schedule();
- return 0;
-}
-
void btrfs_wait_for_snapshot_creation(struct btrfs_root *root)
{
while (true) {
@@ -11120,8 +11100,7 @@ void btrfs_wait_for_snapshot_creation(struct btrfs_root *root)
ret = btrfs_start_write_no_snapshotting(root);
if (ret)
break;
- wait_on_atomic_t(&root->will_be_snapshotted,
- wait_snapshotting_atomic_t,
+ wait_on_atomic_t(&root->will_be_snapshotted, atomic_t_wait,
TASK_UNINTERRUPTIBLE);
}
}
diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c
index 40d61077bead..ff84258132bb 100644
--- a/fs/fscache/cookie.c
+++ b/fs/fscache/cookie.c
@@ -558,7 +558,7 @@ void __fscache_disable_cookie(struct fscache_cookie *cookie, bool invalidate)
* have completed.
*/
if (!atomic_dec_and_test(&cookie->n_active))
- wait_on_atomic_t(&cookie->n_active, fscache_wait_atomic_t,
+ wait_on_atomic_t(&cookie->n_active, atomic_t_wait,
TASK_UNINTERRUPTIBLE);
/* Make sure any pending writes are cancelled. */
diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h
index 97ec45110957..0ff4b49a0037 100644
--- a/fs/fscache/internal.h
+++ b/fs/fscache/internal.h
@@ -97,8 +97,6 @@ static inline bool fscache_object_congested(void)
return workqueue_congested(WORK_CPU_UNBOUND, fscache_object_wq);
}
-extern int fscache_wait_atomic_t(atomic_t *);
-
/*
* object.c
*/
diff --git a/fs/fscache/main.c b/fs/fscache/main.c
index b39d487ccfb0..249968dcbf5c 100644
--- a/fs/fscache/main.c
+++ b/fs/fscache/main.c
@@ -195,12 +195,3 @@ static void __exit fscache_exit(void)
}
module_exit(fscache_exit);
-
-/*
- * wait_on_atomic_t() sleep function for uninterruptible waiting
- */
-int fscache_wait_atomic_t(atomic_t *p)
-{
- schedule();
- return 0;
-}
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 134d9f560240..1629056aa2c9 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -85,9 +85,9 @@ int nfs_wait_bit_killable(struct wait_bit_key *key, int mode)
}
EXPORT_SYMBOL_GPL(nfs_wait_bit_killable);
-int nfs_wait_atomic_killable(atomic_t *p)
+int nfs_wait_atomic_killable(atomic_t *p, unsigned int mode)
{
- return nfs_wait_killable(TASK_KILLABLE);
+ return nfs_wait_killable(mode);
}
/**
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index f9a4a5524bd5..5ab17fd4700a 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -388,7 +388,7 @@ extern void nfs_evict_inode(struct inode *);
void nfs_zap_acl_cache(struct inode *inode);
extern bool nfs_check_cache_invalid(struct inode *, unsigned long);
extern int nfs_wait_bit_killable(struct wait_bit_key *key, int mode);
-extern int nfs_wait_atomic_killable(atomic_t *p);
+extern int nfs_wait_atomic_killable(atomic_t *p, unsigned int mode);
/* super.c */
extern const struct super_operations nfs_sops;
diff --git a/fs/ocfs2/filecheck.c b/fs/ocfs2/filecheck.c
index 2cabbcf2f28e..e87279e49ba3 100644
--- a/fs/ocfs2/filecheck.c
+++ b/fs/ocfs2/filecheck.c
@@ -129,19 +129,13 @@ static struct kobj_attribute ocfs2_attr_filecheck_set =
ocfs2_filecheck_show,
ocfs2_filecheck_store);
-static int ocfs2_filecheck_sysfs_wait(atomic_t *p)
-{
- schedule();
- return 0;
-}
-
static void
ocfs2_filecheck_sysfs_free(struct ocfs2_filecheck_sysfs_entry *entry)
{
struct ocfs2_filecheck_entry *p;
if (!atomic_dec_and_test(&entry->fs_count))
- wait_on_atomic_t(&entry->fs_count, ocfs2_filecheck_sysfs_wait,
+ wait_on_atomic_t(&entry->fs_count, atomic_t_wait,
TASK_UNINTERRUPTIBLE);
spin_lock(&entry->fs_fcheck->fc_lock);