[GFS2] Add generation number

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / gfs2 / meta_io.c

diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index 2523d42a02de7da79255e1a253452e1b227782e9..cad44fd70d67b832d165637d9c47705d42dda6f3 100644 (file)
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -31,6 +31,7 @@
 #include "rgrp.h"
 #include "trans.h"
 #include "util.h"
+#include "ops_address.h"
 
 #define buffer_busy(bh) \
 ((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock) | (1ul << BH_Pinned)))
@@ -50,118 +51,9 @@ static int gfs2_aspace_writepage(struct page *page,
        return block_write_full_page(page, aspace_get_block, wbc);
 }
 
-/**
- * stuck_releasepage - We're stuck in gfs2_releasepage().  Print stuff out.
- * @bh: the buffer we're stuck on
- *
- */
-
-static void stuck_releasepage(struct buffer_head *bh)
-{
-       struct inode *inode = bh->b_page->mapping->host;
-       struct gfs2_sbd *sdp = inode->i_sb->s_fs_info;
-       struct gfs2_bufdata *bd = bh->b_private;
-       struct gfs2_glock *gl;
-
-       fs_warn(sdp, "stuck in gfs2_releasepage() %p\n", inode);
-       fs_warn(sdp, "blkno = %llu, bh->b_count = %d\n",
-               (unsigned long long)bh->b_blocknr, atomic_read(&bh->b_count));
-       fs_warn(sdp, "pinned = %u\n", buffer_pinned(bh));
-       fs_warn(sdp, "bh->b_private = %s\n", (bd) ? "!NULL" : "NULL");
-
-       if (!bd)
-               return;
-
-       gl = bd->bd_gl;
-
-       fs_warn(sdp, "gl = (%u, %llu)\n", 
-               gl->gl_name.ln_type, (unsigned long long)gl->gl_name.ln_number);
-
-       fs_warn(sdp, "bd_list_tr = %s, bd_le.le_list = %s\n",
-               (list_empty(&bd->bd_list_tr)) ? "no" : "yes",
-               (list_empty(&bd->bd_le.le_list)) ? "no" : "yes");
-
-       if (gl->gl_ops == &gfs2_inode_glops) {
-               struct gfs2_inode *ip = gl->gl_object;
-               unsigned int x;
-
-               if (!ip)
-                       return;
-
-               fs_warn(sdp, "ip = %llu %llu\n",
-                       (unsigned long long)ip->i_num.no_formal_ino,
-                       (unsigned long long)ip->i_num.no_addr);
-
-               for (x = 0; x < GFS2_MAX_META_HEIGHT; x++)
-                       fs_warn(sdp, "ip->i_cache[%u] = %s\n",
-                               x, (ip->i_cache[x]) ? "!NULL" : "NULL");
-       }
-}
-
-/**
- * gfs2_aspace_releasepage - free the metadata associated with a page
- * @page: the page that's being released
- * @gfp_mask: passed from Linux VFS, ignored by us
- *
- * Call try_to_free_buffers() if the buffers in this page can be
- * released.
- *
- * Returns: 0
- */
-
-static int gfs2_aspace_releasepage(struct page *page, gfp_t gfp_mask)
-{
-       struct inode *aspace = page->mapping->host;
-       struct gfs2_sbd *sdp = aspace->i_sb->s_fs_info;
-       struct buffer_head *bh, *head;
-       struct gfs2_bufdata *bd;
-       unsigned long t;
-
-       if (!page_has_buffers(page))
-               goto out;
-
-       head = bh = page_buffers(page);
-       do {
-               t = jiffies;
-
-               while (atomic_read(&bh->b_count)) {
-                       if (atomic_read(&aspace->i_writecount)) {
-                               if (time_after_eq(jiffies, t +
-                                   gfs2_tune_get(sdp, gt_stall_secs) * HZ)) {
-                                       stuck_releasepage(bh);
-                                       t = jiffies;
-                               }
-
-                               yield();
-                               continue;
-                       }
-
-                       return 0;
-               }
-
-               gfs2_assert_warn(sdp, !buffer_pinned(bh));
-
-               bd = bh->b_private;
-               if (bd) {
-                       gfs2_assert_warn(sdp, bd->bd_bh == bh);
-                       gfs2_assert_warn(sdp, list_empty(&bd->bd_list_tr));
-                       gfs2_assert_warn(sdp, list_empty(&bd->bd_le.le_list));
-                       gfs2_assert_warn(sdp, !bd->bd_ail);
-                       kmem_cache_free(gfs2_bufdata_cachep, bd);
-                       bh->b_private = NULL;
-               }
-
-               bh = bh->b_this_page;
-       }
-       while (bh != head);
-
- out:
-       return try_to_free_buffers(page);
-}
-
-static struct address_space_operations aspace_aops = {
+static const struct address_space_operations aspace_aops = {
        .writepage = gfs2_aspace_writepage,
-       .releasepage = gfs2_aspace_releasepage,
+       .releasepage = gfs2_releasepage,
 };
 
 /**