Fix nfsd truncation of readdir results

[linux-2.6-omap-h63xx.git] / fs / ocfs2 / inode.c

diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 7e9e4c79aec7bf4b3e4488190f47972821a3945f..4903688f72a9314f03ab66183de3104b54a3eed1 100644 (file)
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -49,6 +49,7 @@
 #include "symlink.h"
 #include "sysfile.h"
 #include "uptodate.h"
+#include "xattr.h"
 
 #include "buffer_head_io.h"
 
@@ -219,6 +220,7 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
        struct super_block *sb;
        struct ocfs2_super *osb;
        int status = -EINVAL;
+       int use_plocks = 1;
 
        mlog_entry("(0x%p, size:%llu)\n", inode,
                   (unsigned long long)le64_to_cpu(fe->i_size));
@@ -226,6 +228,10 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
        sb = inode->i_sb;
        osb = OCFS2_SB(sb);
 
+       if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) ||
+           ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks())
+               use_plocks = 0;
+
        /* this means that read_inode cannot create a superblock inode
         * today.  change if needed. */
        if (!OCFS2_IS_VALID_DINODE(fe) ||
@@ -295,13 +301,19 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
 
        switch (inode->i_mode & S_IFMT) {
            case S_IFREG:
-                   inode->i_fop = &ocfs2_fops;
+                   if (use_plocks)
+                           inode->i_fop = &ocfs2_fops;
+                   else
+                           inode->i_fop = &ocfs2_fops_no_plocks;
                    inode->i_op = &ocfs2_file_iops;
                    i_size_write(inode, le64_to_cpu(fe->i_size));
                    break;
            case S_IFDIR:
                    inode->i_op = &ocfs2_dir_iops;
-                   inode->i_fop = &ocfs2_dops;
+                   if (use_plocks)
+                           inode->i_fop = &ocfs2_dops;
+                   else
+                           inode->i_fop = &ocfs2_dops_no_plocks;
                    i_size_write(inode, le64_to_cpu(fe->i_size));
                    break;
            case S_IFLNK:
@@ -448,8 +460,11 @@ static int ocfs2_read_locked_inode(struct inode *inode,
                }
        }
 
-       status = ocfs2_read_block(osb, args->fi_blkno, &bh, 0,
-                                 can_lock ? inode : NULL);
+       if (can_lock)
+               status = ocfs2_read_blocks(inode, args->fi_blkno, 1, &bh,
+                                          OCFS2_BH_IGNORE_CACHE);
+       else
+               status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh);
        if (status < 0) {
                mlog_errno(status);
                goto bail;
@@ -522,6 +537,9 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
         * data and fast symlinks.
         */
        if (fe->i_clusters) {
+               if (ocfs2_should_order_data(inode))
+                       ocfs2_begin_ordered_truncate(inode, 0);
+
                handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
                if (IS_ERR(handle)) {
                        status = PTR_ERR(handle);
@@ -730,6 +748,13 @@ static int ocfs2_wipe_inode(struct inode *inode,
                goto bail_unlock_dir;
        }
 
+       /*Free extended attribute resources associated with this inode.*/
+       status = ocfs2_xattr_remove(inode, di_bh);
+       if (status < 0) {
+               mlog_errno(status);
+               goto bail_unlock_dir;
+       }
+
        status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode,
                                    orphan_dir_bh);
        if (status < 0)
@@ -1081,6 +1106,8 @@ void ocfs2_clear_inode(struct inode *inode)
        oi->ip_last_trans = 0;
        oi->ip_dir_start_lookup = 0;
        oi->ip_blkno = 0ULL;
+       jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal,
+                                      &oi->ip_jinode);
 
 bail:
        mlog_exit_void();
@@ -1106,58 +1133,6 @@ void ocfs2_drop_inode(struct inode *inode)
        mlog_exit_void();
 }
 
-/*
- * TODO: this should probably be merged into ocfs2_get_block
- *
- * However, you now need to pay attention to the cont_prepare_write()
- * stuff in ocfs2_get_block (that is, ocfs2_get_block pretty much
- * expects never to extend).
- */
-struct buffer_head *ocfs2_bread(struct inode *inode,
-                               int block, int *err, int reada)
-{
-       struct buffer_head *bh = NULL;
-       int tmperr;
-       u64 p_blkno;
-       int readflags = OCFS2_BH_CACHED;
-
-       if (reada)
-               readflags |= OCFS2_BH_READAHEAD;
-
-       if (((u64)block << inode->i_sb->s_blocksize_bits) >=
-           i_size_read(inode)) {
-               BUG_ON(!reada);
-               return NULL;
-       }
-
-       down_read(&OCFS2_I(inode)->ip_alloc_sem);
-       tmperr = ocfs2_extent_map_get_blocks(inode, block, &p_blkno, NULL,
-                                            NULL);
-       up_read(&OCFS2_I(inode)->ip_alloc_sem);
-       if (tmperr < 0) {
-               mlog_errno(tmperr);
-               goto fail;
-       }
-
-       tmperr = ocfs2_read_block(OCFS2_SB(inode->i_sb), p_blkno, &bh,
-                                 readflags, inode);
-       if (tmperr < 0)
-               goto fail;
-
-       tmperr = 0;
-
-       *err = 0;
-       return bh;
-
-fail:
-       if (bh) {
-               brelse(bh);
-               bh = NULL;
-       }
-       *err = -EIO;
-       return NULL;
-}
-
 /*
  * This is called from our getattr.
  */