[XFS] streamline init/exit path

Currently the xfs module init/exit code is a mess. It's farmed out over a
lot of function with very little error checking. This patch makes sure we
propagate all initialization failures properly and clean up after them.
Various runtime initializations are replaced with compile-time
initializations where possible to make this easier. The exit path is
similarly consolidated.

There's now split out function to create/destroy the kmem zones and
alloc/free the trace buffers. I've also changed the ktrace allocations to
KM_MAYFAIL and handled errors resulting from that.

And yes, we really should replace the XFS_*_TRACE ifdefs with a single
XFS_TRACE..

SGI-PV: 976035

SGI-Modid: xfs-linux-melb:xfs-kern:31354a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

1 files changed, 0 insertions, 131 deletions

diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index 8b5a3376c2f7..4a9a43315a86 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -58,137 +58,6 @@
 #include "xfs_utils.h"
 
 
-int __init
-xfs_init(void)
-{
-#ifdef XFS_DABUF_DEBUG
-        extern spinlock_t        xfs_dabuf_global_lock;
-        spin_lock_init(&xfs_dabuf_global_lock);
-#endif
-
-        /*
-         * Initialize all of the zone allocators we use.
-         */
-        xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t),
-                                                "xfs_log_ticket");
-        xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t),
-                                                "xfs_bmap_free_item");
-        xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
-                                                "xfs_btree_cur");
-        xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t),
-                                                "xfs_da_state");
-        xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf");
-        xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork");
-        xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
-        xfs_acl_zone_init(xfs_acl_zone, "xfs_acl");
-        xfs_mru_cache_init();
-        xfs_filestream_init();
-
-        /*
-         * The size of the zone allocated buf log item is the maximum
-         * size possible under XFS.  This wastes a little bit of memory,
-         * but it is much faster.
-         */
-        xfs_buf_item_zone =
-                kmem_zone_init((sizeof(xfs_buf_log_item_t) +
-                                (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) /
-                                  NBWORD) * sizeof(int))),
-                               "xfs_buf_item");
-        xfs_efd_zone =
-                kmem_zone_init((sizeof(xfs_efd_log_item_t) +
-                               ((XFS_EFD_MAX_FAST_EXTENTS - 1) *
-                                 sizeof(xfs_extent_t))),
-                                      "xfs_efd_item");
-        xfs_efi_zone =
-                kmem_zone_init((sizeof(xfs_efi_log_item_t) +
-                               ((XFS_EFI_MAX_FAST_EXTENTS - 1) *
-                                 sizeof(xfs_extent_t))),
-                                      "xfs_efi_item");
-
-        /*
-         * These zones warrant special memory allocator hints
-         */
-        xfs_inode_zone =
-                kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
-                                        KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
-                                        KM_ZONE_SPREAD, NULL);
-        xfs_ili_zone =
-                kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili",
-                                        KM_ZONE_SPREAD, NULL);
-
-        /*
-         * Allocate global trace buffers.
-         */
-#ifdef XFS_ALLOC_TRACE
-        xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_BMAP_TRACE
-        xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_BMBT_TRACE
-        xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_ATTR_TRACE
-        xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_SLEEP);
-#endif
-#ifdef XFS_DIR2_TRACE
-        xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_SLEEP);
-#endif
-
-        xfs_dir_startup();
-
-#if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
-        xfs_error_test_init();
-#endif /* DEBUG || INDUCE_IO_ERROR */
-
-        xfs_init_procfs();
-        xfs_sysctl_register();
-        return 0;
-}
-
-void __exit
-xfs_cleanup(void)
-{
-        extern kmem_zone_t      *xfs_inode_zone;
-        extern kmem_zone_t      *xfs_efd_zone;
-        extern kmem_zone_t      *xfs_efi_zone;
-
-        xfs_cleanup_procfs();
-        xfs_sysctl_unregister();
-        xfs_filestream_uninit();
-        xfs_mru_cache_uninit();
-        xfs_acl_zone_destroy(xfs_acl_zone);
-
-#ifdef XFS_DIR2_TRACE
-        ktrace_free(xfs_dir2_trace_buf);
-#endif
-#ifdef XFS_ATTR_TRACE
-        ktrace_free(xfs_attr_trace_buf);
-#endif
-#ifdef XFS_BMBT_TRACE
-        ktrace_free(xfs_bmbt_trace_buf);
-#endif
-#ifdef XFS_BMAP_TRACE
-        ktrace_free(xfs_bmap_trace_buf);
-#endif
-#ifdef XFS_ALLOC_TRACE
-        ktrace_free(xfs_alloc_trace_buf);
-#endif
-
-        kmem_zone_destroy(xfs_bmap_free_item_zone);
-        kmem_zone_destroy(xfs_btree_cur_zone);
-        kmem_zone_destroy(xfs_inode_zone);
-        kmem_zone_destroy(xfs_trans_zone);
-        kmem_zone_destroy(xfs_da_state_zone);
-        kmem_zone_destroy(xfs_dabuf_zone);
-        kmem_zone_destroy(xfs_buf_item_zone);
-        kmem_zone_destroy(xfs_efd_zone);
-        kmem_zone_destroy(xfs_efi_zone);
-        kmem_zone_destroy(xfs_ifork_zone);
-        kmem_zone_destroy(xfs_ili_zone);
-        kmem_zone_destroy(xfs_log_ticket_zone);
-}
-
 STATIC void
 xfs_quiesce_fs(
         xfs_mount_t             *mp)