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[XFS] Unwrap xfs_dabuf_global_lock 

Un-obfuscate dabuf_global_lock, remove mutex_lock->spin_lock macros, call
spin_lock directly, remove extraneous cookie holdover from old xfs code,
and change lock type to spinlock_t.

SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29744a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
This commit is contained in:
Eric Sandeen 2007-10-11 17:41:21 +10:00 committed by Lachlan McIlroy
parent 64137e56d7
commit 703e1f0fd2
2 changed files with 6 additions and 9 deletions
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13
fs/xfs/xfs_da_btree.c
View File

@ -2218,7 +2218,7 @@ xfs_da_state_free(xfs_da_state_t *state)
#ifdef XFS_DABUF_DEBUG
xfs_dabuf_t *xfs_dabuf_global_list;
lock_t xfs_dabuf_global_lock;
spinlock_t xfs_dabuf_global_lock;
#endif
/*
@ -2264,10 +2264,9 @@ xfs_da_buf_make(int nbuf, xfs_buf_t **bps, inst_t *ra)
}
#ifdef XFS_DABUF_DEBUG
{
SPLDECL(s);
xfs_dabuf_t *p;
s = mutex_spinlock(&xfs_dabuf_global_lock);
spin_lock(&xfs_dabuf_global_lock);
for (p = xfs_dabuf_global_list; p; p = p->next) {
ASSERT(p->blkno != dabuf->blkno ||
p->target != dabuf->target);
@ -2277,7 +2276,7 @@ xfs_da_buf_make(int nbuf, xfs_buf_t **bps, inst_t *ra)
xfs_dabuf_global_list->prev = dabuf;
dabuf->next = xfs_dabuf_global_list;
xfs_dabuf_global_list = dabuf;
mutex_spinunlock(&xfs_dabuf_global_lock, s);
spin_unlock(&xfs_dabuf_global_lock);
}
#endif
return dabuf;
@ -2319,16 +2318,14 @@ xfs_da_buf_done(xfs_dabuf_t *dabuf)
kmem_free(dabuf->data, BBTOB(dabuf->bbcount));
#ifdef XFS_DABUF_DEBUG
{
SPLDECL(s);
s = mutex_spinlock(&xfs_dabuf_global_lock);
spin_lock(&xfs_dabuf_global_lock);
if (dabuf->prev)
dabuf->prev->next = dabuf->next;
else
xfs_dabuf_global_list = dabuf->next;
if (dabuf->next)
dabuf->next->prev = dabuf->prev;
mutex_spinunlock(&xfs_dabuf_global_lock, s);
spin_unlock(&xfs_dabuf_global_lock);
}
memset(dabuf, 0, XFS_DA_BUF_SIZE(dabuf->nbuf));
#endif

2
fs/xfs/xfs_vfsops.c
View File

@ -67,7 +67,7 @@ xfs_init(void)
extern kmem_zone_t *xfs_buf_item_zone;
extern kmem_zone_t *xfs_dabuf_zone;
#ifdef XFS_DABUF_DEBUG
extern lock_t xfs_dabuf_global_lock;
extern spinlock_t xfs_dabuf_global_lock;
spinlock_init(&xfs_dabuf_global_lock, "xfsda");
#endif