[XFS] growlock should be a mutex
m_growlock only needs plain binary mutex semantics, so use a struct mutex
instead of a semaphore for it.
SGI-PV: 968563
SGI-Modid: xfs-linux-melb:xfs-kern:29512a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 94bd9f2..c92d5b8 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -433,10 +433,10 @@
xfs_growfs_data_t *in)
{
int error;
- if (!cpsema(&mp->m_growlock))
+ if (!mutex_trylock(&mp->m_growlock))
return XFS_ERROR(EWOULDBLOCK);
error = xfs_growfs_data_private(mp, in);
- vsema(&mp->m_growlock);
+ mutex_unlock(&mp->m_growlock);
return error;
}
@@ -446,10 +446,10 @@
xfs_growfs_log_t *in)
{
int error;
- if (!cpsema(&mp->m_growlock))
+ if (!mutex_trylock(&mp->m_growlock))
return XFS_ERROR(EWOULDBLOCK);
error = xfs_growfs_log_private(mp, in);
- vsema(&mp->m_growlock);
+ mutex_unlock(&mp->m_growlock);
return error;
}
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index ba8df2f..ebdb76d 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -139,7 +139,7 @@
AIL_LOCKINIT(&mp->m_ail_lock, "xfs_ail");
spinlock_init(&mp->m_sb_lock, "xfs_sb");
mutex_init(&mp->m_ilock);
- initnsema(&mp->m_growlock, 1, "xfs_grow");
+ mutex_init(&mp->m_growlock);
/*
* Initialize the AIL.
*/
@@ -174,7 +174,7 @@
AIL_LOCK_DESTROY(&mp->m_ail_lock);
spinlock_destroy(&mp->m_sb_lock);
mutex_destroy(&mp->m_ilock);
- freesema(&mp->m_growlock);
+ mutex_destroy(&mp->m_growlock);
if (mp->m_quotainfo)
XFS_QM_DONE(mp);
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 7f671f8..c618f7c 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -384,7 +384,7 @@
uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
struct xfs_perag *m_perag; /* per-ag accounting info */
struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
- sema_t m_growlock; /* growfs mutex */
+ struct mutex m_growlock; /* growfs mutex */
int m_fixedfsid[2]; /* unchanged for life of FS */
uint m_dmevmask; /* DMI events for this FS */
__uint64_t m_flags; /* global mount flags */