[Ocfs2-devel] [PATCH]2.6 fixes in super.c
Rusty Lynch
rusty at linux.co.intel.com
Tue Feb 17 19:12:17 CST 2004
The following patch fixes 2.6 port issues in super.c (which
spills into ocfs.h)
Specifically:
* The module inc/dec stuff is out for 2.6
* small changes in super_operations like the
use of the new kstatfs struct
--rusty
Index: super.c
===================================================================
--- super.c (revision 31)
+++ super.c (working copy)
@@ -37,9 +37,11 @@
__u32 osb_id; /* Keeps track of next available OSB Id */
spinlock_t mount_cnt_lock;
__u32 mount_cnt; /* Number of volumes currently mounted */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
bool mount_cnt_inc; /* true when mount_cnt is inc by 1 during first mount */
+#endif
-
char *node_name = NULL;
__u32 node_number = OCFS_INVALID_NODE_NUM;
__u32 debug_context = 0;
@@ -123,17 +125,22 @@
#endif /* Linux 2.4 stuff */
static int ocfs_parse_options (char *options, __u32 * uid, __u32 * gid, bool * reclaim_id);
-static struct super_block *ocfs_read_super (struct super_block *sb, void *data, int silent);
static int __init ocfs_driver_entry (void);
static void __exit ocfs_driver_exit (void);
static void ocfs_put_super (struct super_block *sb);
-static int ocfs_statfs (struct super_block *sb, struct statfs *buf);
+
static void lockres_hash_free_func (const void *p);
static int ocfs_mount_volume (struct super_block *sb, bool reclaim_id, struct inode *root);
static int ocfs_read_params(void);
static int ocfs_initialize_mem_lists (void);
static void ocfs_free_mem_lists (void);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+static int ocfs_statfs (struct super_block *sb, struct kstatfs *buf);
+#else
+static int ocfs_statfs (struct super_block *sb, struct statfs *buf);
+#endif
+
static struct super_operations ocfs_sops = {
.statfs = ocfs_statfs,
.put_inode = ocfs_put_inode,
@@ -148,22 +155,8 @@
};
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#ifdef LINUX_2_5
-
-static struct file_system_type ocfs_fs_type = {
- .owner = THIS_MODULE,
- .name = "ocfs2",
- .get_sb = ocfs_get_sb, /* is this called when we mount
- * the fs? */
- .kill_sb = kill_block_super, /* set to the generic one
- * right now, but do we
- * need to change that? */
- .fs_flags = FS_REQUIRES_DEV,
- .next = NULL
-};
-
-
static int ocfs_fill_super (struct super_block *sb, void *data, int silent)
{
struct dentry *root_dentry;
@@ -238,11 +231,23 @@
return status;
} /* ocfs_fill_super */
-static struct super_block *ocfs_get_sb(struct file_system_type *fs_type, int flags, char *dev_name, void *data)
+static struct super_block *ocfs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data)
{
return get_sb_bdev(fs_type, flags, dev_name, data, ocfs_fill_super);
}
+static struct file_system_type ocfs_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "ocfs2",
+ .get_sb = ocfs_get_sb, /* is this called when we mount
+ * the fs? */
+ .kill_sb = kill_block_super, /* set to the generic one
+ * right now, but do we
+ * need to change that? */
+ .fs_flags = FS_REQUIRES_DEV,
+ .next = NULL
+};
+
#else /* We're a 2.4 kernel */
@@ -335,7 +340,6 @@
#endif /* #if LINUX_2_5 ... #else */
-
/*
* ocfs_parse_options()
*
@@ -478,7 +482,9 @@
spin_lock_init (&mount_cnt_lock);
spin_lock (&mount_cnt_lock);
mount_cnt = 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
mount_cnt_inc = false;
+#endif
spin_unlock (&mount_cnt_lock);
spin_lock_init (&OcfsGlobalCtxt.comm_seq_lock);
@@ -679,18 +685,79 @@
ocfs_sync_blockdev(sb);
LOG_TRACE_STR ("put super... do nothing! DONE!!!!");
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+ LOG_TRACE_STR("decrementing module use count");
MOD_DEC_USE_COUNT;
+#endif
LOG_EXIT ();
return;
} /* ocfs_put_super */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
/*
* ocfs_statfs()
*
*/
+static int ocfs_statfs (struct super_block *sb, struct kstatfs *buf)
+{
+ ocfs_super *osb = NULL;
+ __u32 numbits, freebits = 0;
+ // ocfs_lock_res *pLockResource;
+ int status = 0;
+ ocfs_bitmap_lock *bm_lock = NULL;
+ struct buffer_head *bh = NULL;
+
+ LOG_ENTRY_ARGS ("(0x%08x, 0x%08x)\n", sb, buf);
+
+ osb = (ocfs_super *) OCFS_GENERIC_SB_P(sb);
+ numbits = osb->cluster_bitmap.validbits;
+
+ status = ocfs_read_bh (osb, OCFS_BITMAP_LOCK_OFFSET, &bh, 0, NULL);
+ if (status < 0) {
+ LOG_ERROR_STR("failed to read bitmap data");
+ return -EIO;
+ }
+ bm_lock = (ocfs_bitmap_lock *)OCFS_BH_GET_DATA_READ(bh); /* read */
+
+ if (numbits >= bm_lock->used_bits)
+ freebits = numbits - bm_lock->used_bits;
+
+ /* take out the space reserved for system files */
+ freebits -= (8 * ONE_MEGA_BYTE / osb->vol_layout.cluster_size);
+
+ buf->f_type = OCFS_MAGIC;
+ buf->f_bsize = sb->s_blocksize;
+ buf->f_namelen = OCFS_MAX_FILENAME_LENGTH;
+ buf->f_blocks =
+ (sector_t) ((unsigned long) (numbits) *
+ (unsigned long) (osb->vol_layout.cluster_size >> 9) -
+ (8 * ONE_MEGA_BYTE / osb->vol_layout.cluster_size));
+ buf->f_bfree =
+ (sector_t) (freebits * (osb->vol_layout.cluster_size >> 9));
+ buf->f_bavail = buf->f_bfree;
+ buf->f_files = (sector_t) (numbits);
+ buf->f_ffree = (sector_t) (numbits) - freebits;
+
+ OCFS_BH_PUT_DATA(bh);
+ lock_buffer(bh);
+ clear_buffer_uptodate(bh);
+ unlock_buffer(bh);
+ brelse(bh);
+
+ LOG_EXIT_LONG (0);
+ return 0;
+} /* ocfs_statfs */
+
+#else /* 2.4.x kernel */
+
+/*
+ * ocfs_statfs()
+ *
+ */
static int ocfs_statfs (struct super_block *sb, struct statfs *buf)
{
ocfs_super *osb = NULL;
@@ -741,6 +808,8 @@
return 0;
} /* ocfs_statfs */
+#endif /* 2.4.x kernel */
+
#ifdef CDTOR_FOR_SLAB
static void lockres_ctor(void *p, kmem_cache_t *slab, unsigned long flags)
{
@@ -981,10 +1050,13 @@
}
OcfsIpcCtxt.init = true;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
if (mount_cnt_inc == false) {
+ LOG_TRACE_STR("incrementing module use count");
MOD_INC_USE_COUNT;
mount_cnt_inc = true;
}
+#endif
}
spin_unlock (&mount_cnt_lock);
@@ -1180,8 +1252,10 @@
ocfs_safefree (osb);
sb->s_dev = 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
spin_lock (&mount_cnt_lock);
if (!mount_cnt && !atomic_read(&OcfsGlobalCtxt.cnt_lockres) && mount_cnt_inc) {
+ LOG_TRACE_STR("decrementing module use count");
MOD_DEC_USE_COUNT;
mount_cnt_inc = false;
} else {
@@ -1190,6 +1264,7 @@
atomic_read(&OcfsGlobalCtxt.cnt_lockres));
}
spin_unlock (&mount_cnt_lock);
+#endif /* 2.4.x kernel */
leave:
if (AcquiredOSB) {
Index: inc/ocfs.h
===================================================================
--- inc/ocfs.h (revision 31)
+++ inc/ocfs.h (working copy)
@@ -88,7 +88,7 @@
#endif
#include <linux/inet.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#include <asm/statfs.h>
+#include <linux/statfs.h>
#include <linux/blkdev.h>
#include <linux/in.h>
#include <linux/buffer_head.h>
@@ -205,7 +205,7 @@
*t += (__u64)(CURRENT_TIME.tv_nsec) / (__u64) 100; \
} while (0)
#define OCFS_CURRENT_TIME (CURRENT_TIME.tv_sec)
-#define OCFS_SET_INODE_TIME(i, x, y) i->##x.tv_sec = (y)
+#define OCFS_SET_INODE_TIME(i, x, y) (i->x.tv_sec = (y))
#else
/* time is in 0.1 microsecs */
#define OcfsQuerySystemTime(t) \
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