[XFS] Fix up sparse warnings.
These are mostly locking annotations, marking things static, casts where
needed and declaring stuff in header files.
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30002a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_globals.c b/fs/xfs/linux-2.6/xfs_globals.c
index 9febf9d..ef90e64 100644
--- a/fs/xfs/linux-2.6/xfs_globals.c
+++ b/fs/xfs/linux-2.6/xfs_globals.c
@@ -47,5 +47,6 @@
/*
* Global system credential structure.
*/
-cred_t sys_cred_val, *sys_cred = &sys_cred_val;
+static cred_t sys_cred_val;
+cred_t *sys_cred = &sys_cred_val;
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index cb2c991..daa351a 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -512,7 +512,7 @@
if (!kbuf)
return ENOMEM;
- error = xfs_attr_get(XFS_I(inode), name, kbuf, len, flags, NULL);
+ error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags, NULL);
if (error)
goto out_kfree;
diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c
index 83463c2..a4b254e 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl32.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl32.c
@@ -44,6 +44,7 @@
#include "xfs_error.h"
#include "xfs_dfrag.h"
#include "xfs_vnodeops.h"
+#include "xfs_ioctl32.h"
#define _NATIVE_IOC(cmd, type) \
_IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index 93fa64d..e58f321 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -929,7 +929,7 @@
* This leaf block cannot have a "remote" value, we only call this routine
* if bmap_one_block() says there is only one block (ie: no remote blks).
*/
-int
+STATIC int
xfs_attr_leaf_addname(xfs_da_args_t *args)
{
xfs_inode_t *dp;
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 97f0328b..b02452b 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -6393,7 +6393,7 @@
* Recursively walks each level of a btree
* to count total fsblocks is use.
*/
-int /* error */
+STATIC int /* error */
xfs_bmap_count_tree(
xfs_mount_t *mp, /* file system mount point */
xfs_trans_t *tp, /* transaction pointer */
@@ -6469,7 +6469,7 @@
/*
* Count leaf blocks given a range of extent records.
*/
-int
+STATIC int
xfs_bmap_count_leaves(
xfs_ifork_t *ifp,
xfs_extnum_t idx,
@@ -6489,7 +6489,7 @@
* Count leaf blocks given a range of extent records originally
* in btree format.
*/
-int
+STATIC int
xfs_bmap_disk_count_leaves(
xfs_extnum_t idx,
xfs_bmbt_block_t *block,
diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h
index 68267d7..87224b7 100644
--- a/fs/xfs/xfs_bmap.h
+++ b/fs/xfs/xfs_bmap.h
@@ -25,6 +25,8 @@
struct xfs_mount;
struct xfs_trans;
+extern kmem_zone_t *xfs_bmap_free_item_zone;
+
/*
* DELTA: describe a change to the in-core extent list.
*
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index 6e40a0a..7440b78 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -24,6 +24,8 @@
struct xfs_mount;
struct xfs_trans;
+extern kmem_zone_t *xfs_btree_cur_zone;
+
/*
* This nonsense is to make -wlint happy.
*/
diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h
index d7e1361..5a41c34 100644
--- a/fs/xfs/xfs_buf_item.h
+++ b/fs/xfs/xfs_buf_item.h
@@ -18,6 +18,8 @@
#ifndef __XFS_BUF_ITEM_H__
#define __XFS_BUF_ITEM_H__
+extern kmem_zone_t *xfs_buf_item_zone;
+
/*
* This is the structure used to lay out a buf log item in the
* log. The data map describes which 128 byte chunks of the buffer
diff --git a/fs/xfs/xfs_da_btree.h b/fs/xfs/xfs_da_btree.h
index 44dabf0..7facf86 100644
--- a/fs/xfs/xfs_da_btree.h
+++ b/fs/xfs/xfs_da_btree.h
@@ -260,6 +260,7 @@
xfs_daddr_t xfs_da_blkno(xfs_dabuf_t *dabuf);
extern struct kmem_zone *xfs_da_state_zone;
+extern struct kmem_zone *xfs_dabuf_zone;
#endif /* __KERNEL__ */
#endif /* __XFS_DA_BTREE_H__ */
diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c
index 1e22133..be7c425 100644
--- a/fs/xfs/xfs_dir2.c
+++ b/fs/xfs/xfs_dir2.c
@@ -42,6 +42,7 @@
#include "xfs_dir2_node.h"
#include "xfs_dir2_trace.h"
#include "xfs_error.h"
+#include "xfs_vnodeops.h"
void
diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c
index 36d8f6a..eb03eab 100644
--- a/fs/xfs/xfs_filestream.c
+++ b/fs/xfs/xfs_filestream.c
@@ -348,7 +348,7 @@
}
/* xfs_fstrm_free_func(): callback for freeing cached stream items. */
-void
+STATIC void
xfs_fstrm_free_func(
unsigned long ino,
void *data)
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 6e3d808..301a6b8 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -907,7 +907,7 @@
* the tail. The details of this case are described below, but the end
* result is that we return the size of the log as the amount of space left.
*/
-int
+STATIC int
xlog_space_left(xlog_t *log, int cycle, int bytes)
{
int free_bytes;
@@ -1289,7 +1289,7 @@
* pushes on an lsn which is further along in the log once we reach the high
* water mark. In this manner, we would be creating a low water mark.
*/
-void
+STATIC void
xlog_grant_push_ail(xfs_mount_t *mp,
int need_bytes)
{
@@ -1372,7 +1372,7 @@
* is added immediately before calling bwrite().
*/
-int
+STATIC int
xlog_sync(xlog_t *log,
xlog_in_core_t *iclog)
{
@@ -1516,7 +1516,7 @@
/*
* Deallocate a log structure
*/
-void
+STATIC void
xlog_dealloc_log(xlog_t *log)
{
xlog_in_core_t *iclog, *next_iclog;
@@ -1738,7 +1738,7 @@
* we don't update ic_offset until the end when we know exactly how many
* bytes have been written out.
*/
-int
+STATIC int
xlog_write(xfs_mount_t * mp,
xfs_log_iovec_t reg[],
int nentries,
@@ -2280,7 +2280,7 @@
* global state machine log lock. Assume that the calls to cvsema won't
* take a long time. At least we know it won't sleep.
*/
-void
+STATIC void
xlog_state_done_syncing(
xlog_in_core_t *iclog,
int aborted)
@@ -2340,7 +2340,7 @@
* needs to be incremented, depending on the amount of data which
* is copied.
*/
-int
+STATIC int
xlog_state_get_iclog_space(xlog_t *log,
int len,
xlog_in_core_t **iclogp,
@@ -2776,7 +2776,7 @@
/*
* Atomically put back used ticket.
*/
-void
+STATIC void
xlog_state_put_ticket(xlog_t *log,
xlog_ticket_t *tic)
{
@@ -2794,7 +2794,7 @@
*
*
*/
-int
+STATIC int
xlog_state_release_iclog(xlog_t *log,
xlog_in_core_t *iclog)
{
@@ -3024,7 +3024,7 @@
* If filesystem activity goes to zero, the iclog will get flushed only by
* bdflush().
*/
-int
+STATIC int
xlog_state_sync(xlog_t *log,
xfs_lsn_t lsn,
uint flags,
@@ -3129,7 +3129,7 @@
* Called when we want to mark the current iclog as being ready to sync to
* disk.
*/
-void
+STATIC void
xlog_state_want_sync(xlog_t *log, xlog_in_core_t *iclog)
{
spin_lock(&log->l_icloglock);
@@ -3241,7 +3241,7 @@
/*
* Grab ticket off freelist or allocation some more
*/
-xlog_ticket_t *
+STATIC xlog_ticket_t *
xlog_ticket_get(xlog_t *log,
int unit_bytes,
int cnt,
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 35e098d..3b804b9 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -293,7 +293,7 @@
* Note that the algorithm can not be perfect because the disk will not
* necessarily be perfect.
*/
-int
+STATIC int
xlog_find_cycle_start(
xlog_t *log,
xfs_buf_t *bp,
@@ -986,7 +986,7 @@
* -1 => use *blk_no as the first block of the log
* >0 => error has occurred
*/
-int
+STATIC int
xlog_find_zeroed(
xlog_t *log,
xfs_daddr_t *blk_no)
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 2806d43..766c016 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -2343,7 +2343,7 @@
spin_unlock(&mp->m_sb_lock);
}
-int
+STATIC int
xfs_icsb_modify_counters(
xfs_mount_t *mp,
xfs_sb_field_t field,
diff --git a/fs/xfs/xfs_mru_cache.c b/fs/xfs/xfs_mru_cache.c
index 012209e..a0b2c0a 100644
--- a/fs/xfs/xfs_mru_cache.c
+++ b/fs/xfs/xfs_mru_cache.c
@@ -225,10 +225,14 @@
* list need to be deleted. For each element this involves removing it from the
* data store, removing it from the reap list, calling the client's free
* function and deleting the element from the element zone.
+ *
+ * We get called holding the mru->lock, which we drop and then reacquire.
+ * Sparse need special help with this to tell it we know what we are doing.
*/
STATIC void
_xfs_mru_cache_clear_reap_list(
- xfs_mru_cache_t *mru)
+ xfs_mru_cache_t *mru) __releases(mru->lock) __acquires(mru->lock)
+
{
xfs_mru_cache_elem_t *elem, *next;
struct list_head tmp;
@@ -528,6 +532,10 @@
*
* If the element isn't found, this function returns NULL and the spinlock is
* released. xfs_mru_cache_done() should NOT be called when this occurs.
+ *
+ * Because sparse isn't smart enough to know about conditional lock return
+ * status, we need to help it get it right by annotating the path that does
+ * not release the lock.
*/
void *
xfs_mru_cache_lookup(
@@ -545,8 +553,8 @@
if (elem) {
list_del(&elem->list_node);
_xfs_mru_cache_list_insert(mru, elem);
- }
- else
+ __release(mru_lock); /* help sparse not be stupid */
+ } else
spin_unlock(&mru->lock);
return elem ? elem->value : NULL;
@@ -575,6 +583,8 @@
elem = radix_tree_lookup(&mru->store, key);
if (!elem)
spin_unlock(&mru->lock);
+ else
+ __release(mru_lock); /* help sparse not be stupid */
return elem ? elem->value : NULL;
}
@@ -586,7 +596,7 @@
*/
void
xfs_mru_cache_done(
- xfs_mru_cache_t *mru)
+ xfs_mru_cache_t *mru) __releases(mru->lock)
{
spin_unlock(&mru->lock);
}
diff --git a/fs/xfs/xfs_rename.c b/fs/xfs/xfs_rename.c
index 17e7496..7eb157a 100644
--- a/fs/xfs/xfs_rename.c
+++ b/fs/xfs/xfs_rename.c
@@ -39,6 +39,7 @@
#include "xfs_refcache.h"
#include "xfs_utils.h"
#include "xfs_trans_space.h"
+#include "xfs_vnodeops.h"
/*
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 0e26e72..bea6e2b 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -1001,6 +1001,8 @@
xfs_agnumber_t ag,
xfs_extlen_t idx);
+extern kmem_zone_t *xfs_trans_zone;
+
#endif /* __KERNEL__ */
#endif /* __XFS_TRANS_H__ */
diff --git a/fs/xfs/xfs_trans_item.c b/fs/xfs/xfs_trans_item.c
index 2912aac..66a09f0 100644
--- a/fs/xfs/xfs_trans_item.c
+++ b/fs/xfs/xfs_trans_item.c
@@ -21,6 +21,7 @@
#include "xfs_log.h"
#include "xfs_inum.h"
#include "xfs_trans.h"
+#include "xfs_trans_priv.h"
STATIC int xfs_trans_unlock_chunk(xfs_log_item_chunk_t *,
int, int, xfs_lsn_t);
diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index fd4a0df..871a174 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -61,11 +61,6 @@
int
xfs_init(void)
{
- extern kmem_zone_t *xfs_bmap_free_item_zone;
- extern kmem_zone_t *xfs_btree_cur_zone;
- extern kmem_zone_t *xfs_trans_zone;
- extern kmem_zone_t *xfs_buf_item_zone;
- extern kmem_zone_t *xfs_dabuf_zone;
#ifdef XFS_DABUF_DEBUG
extern spinlock_t xfs_dabuf_global_lock;
spin_lock_init(&xfs_dabuf_global_lock);
@@ -155,15 +150,9 @@
void
xfs_cleanup(void)
{
- extern kmem_zone_t *xfs_bmap_free_item_zone;
- extern kmem_zone_t *xfs_btree_cur_zone;
extern kmem_zone_t *xfs_inode_zone;
- extern kmem_zone_t *xfs_trans_zone;
- extern kmem_zone_t *xfs_da_state_zone;
- extern kmem_zone_t *xfs_dabuf_zone;
extern kmem_zone_t *xfs_efd_zone;
extern kmem_zone_t *xfs_efi_zone;
- extern kmem_zone_t *xfs_buf_item_zone;
extern kmem_zone_t *xfs_icluster_zone;
xfs_cleanup_procfs();
