Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq

[pandora-kernel.git] / fs / ext3 / inode.c

diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index f804d5e..84be02e 100644 (file)
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -925,7 +925,7 @@ int ext3_get_blocks_handle(handle_t *handle, struct inode *inode,
        set_buffer_new(bh_result);
 got_it:
        map_bh(bh_result, inode->i_sb, le32_to_cpu(chain[depth-1].key));
-       if (blocks_to_boundary == 0)
+       if (count > blocks_to_boundary)
                set_buffer_boundary(bh_result);
        err = count;
        /* Clean up and exit */
@@ -1009,11 +1009,14 @@ struct buffer_head *ext3_getblk(handle_t *handle, struct inode *inode,
        buffer_trace_init(&dummy.b_history);
        err = ext3_get_blocks_handle(handle, inode, block, 1,
                                        &dummy, create, 1);
-       if (err == 1) {
+       /*
+        * ext3_get_blocks_handle() returns number of blocks
+        * mapped. 0 in case of a HOLE.
+        */
+       if (err > 0) {
+               if (err > 1)
+                       WARN_ON(1);
                err = 0;
-       } else if (err >= 0) {
-               WARN_ON(1);
-               err = -EIO;
        }
        *errp = err;
        if (!err && buffer_mapped(&dummy)) {
@@ -1158,7 +1161,7 @@ retry:
                ret = PTR_ERR(handle);
                goto out;
        }
-       if (test_opt(inode->i_sb, NOBH))
+       if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
                ret = nobh_prepare_write(page, from, to, ext3_get_block);
        else
                ret = block_prepare_write(page, from, to, ext3_get_block);
@@ -1244,7 +1247,7 @@ static int ext3_writeback_commit_write(struct file *file, struct page *page,
        if (new_i_size > EXT3_I(inode)->i_disksize)
                EXT3_I(inode)->i_disksize = new_i_size;
 
-       if (test_opt(inode->i_sb, NOBH))
+       if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
                ret = nobh_commit_write(file, page, from, to);
        else
                ret = generic_commit_write(file, page, from, to);
@@ -1494,7 +1497,7 @@ static int ext3_writeback_writepage(struct page *page,
                goto out_fail;
        }
 
-       if (test_opt(inode->i_sb, NOBH))
+       if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
                ret = nobh_writepage(page, ext3_get_block, wbc);
        else
                ret = block_write_full_page(page, ext3_get_block, wbc);
@@ -2402,14 +2405,15 @@ static ext3_fsblk_t ext3_get_inode_block(struct super_block *sb,
        struct buffer_head *bh;
        struct ext3_group_desc * gdp;
 
-
-       if ((ino != EXT3_ROOT_INO && ino != EXT3_JOURNAL_INO &&
-               ino != EXT3_RESIZE_INO && ino < EXT3_FIRST_INO(sb)) ||
-               ino > le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)) {
-               ext3_error(sb, "ext3_get_inode_block",
-                           "bad inode number: %lu", ino);
+       if (!ext3_valid_inum(sb, ino)) {
+               /*
+                * This error is already checked for in namei.c unless we are
+                * looking at an NFS filehandle, in which case no error
+                * report is needed
+                */
                return 0;
        }
+
        block_group = (ino - 1) / EXT3_INODES_PER_GROUP(sb);
        if (block_group >= EXT3_SB(sb)->s_groups_count) {
                ext3_error(sb,"ext3_get_inode_block","group >= groups count");