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ext3: remove vestiges of nobh support
The nobh option was only supported for writeback mode, but given that all write paths (except mmapped writed) actually create buffer heads, it effectively was a no-op already. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
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parent
0411ba7902
commit
4c4d390122
3 changed files with 5 additions and 29 deletions
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@ -1625,9 +1625,6 @@ static int ext3_writeback_writepage(struct page *page,
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goto out_fail;
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}
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if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
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ret = nobh_writepage(page, ext3_get_block, wbc);
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else
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ret = block_write_full_page(page, ext3_get_block, wbc);
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err = ext3_journal_stop(handle);
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@ -1922,17 +1919,6 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page,
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length = blocksize - (offset & (blocksize - 1));
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iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
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/*
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* For "nobh" option, we can only work if we don't need to
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* read-in the page - otherwise we create buffers to do the IO.
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*/
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if (!page_has_buffers(page) && test_opt(inode->i_sb, NOBH) &&
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ext3_should_writeback_data(inode) && PageUptodate(page)) {
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zero_user(page, offset, length);
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set_page_dirty(page);
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goto unlock;
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}
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if (!page_has_buffers(page))
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create_empty_buffers(page, blocksize, 0);
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@ -661,9 +661,6 @@ static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs)
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*/
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seq_puts(seq, ",barrier=");
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seq_puts(seq, test_opt(sb, BARRIER) ? "1" : "0");
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if (test_opt(sb, NOBH))
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seq_puts(seq, ",nobh");
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seq_printf(seq, ",data=%s", data_mode_string(test_opt(sb, DATA_FLAGS)));
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if (test_opt(sb, DATA_ERR_ABORT))
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seq_puts(seq, ",data_err=abort");
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@ -1255,10 +1252,12 @@ static int parse_options (char *options, struct super_block *sb,
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*n_blocks_count = option;
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break;
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case Opt_nobh:
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set_opt(sbi->s_mount_opt, NOBH);
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ext3_msg(sb, KERN_WARNING,
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"warning: ignoring deprecated nobh option");
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break;
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case Opt_bh:
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clear_opt(sbi->s_mount_opt, NOBH);
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ext3_msg(sb, KERN_WARNING,
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"warning: ignoring deprecated bh option");
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break;
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default:
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ext3_msg(sb, KERN_ERR,
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@ -2001,14 +2000,6 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
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break;
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}
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if (test_opt(sb, NOBH)) {
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if (!(test_opt(sb, DATA_FLAGS) == EXT3_MOUNT_WRITEBACK_DATA)) {
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ext3_msg(sb, KERN_WARNING,
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"warning: ignoring nobh option - "
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"it is supported only with writeback mode");
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clear_opt(sbi->s_mount_opt, NOBH);
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}
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}
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/*
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* The journal_load will have done any necessary log recovery,
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* so we can safely mount the rest of the filesystem now.
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@ -400,7 +400,6 @@ struct ext3_inode {
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#define EXT3_MOUNT_POSIX_ACL 0x08000 /* POSIX Access Control Lists */
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#define EXT3_MOUNT_RESERVATION 0x10000 /* Preallocation */
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#define EXT3_MOUNT_BARRIER 0x20000 /* Use block barriers */
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#define EXT3_MOUNT_NOBH 0x40000 /* No bufferheads */
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#define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */
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#define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
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#define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
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