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Date: Wed, 17 Aug 2011 13:49:42 +0200 From: Jan Kara <jack@...e.cz> To: Surbhi Palande <ameyasurbhi@...il.com> Cc: linux-ext4@...r.kernel.org, Jan Kara <jack@...e.cz>, Ted Tso <tytso@....edu> Subject: Re: ext4: delayed allocation support and mmap Hi, On Wed 17-08-11 14:02:09, Surbhi Palande wrote: > Current ext4_page_mkwrite() implementation always allocates a block > through ext4_get_block_write() or ext4_get_block(). Why do you think so? Look at: /* Delalloc case is easy... */ if (test_opt(inode->i_sb, DELALLOC) && !ext4_should_journal_data(inode) && !ext4_nonda_switch(inode->i_sb)) { do { ret = __block_page_mkwrite(vma, vmf, ext4_da_get_block_prep); } while (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)); goto out_ret; } Honza -- Jan Kara <jack@...e.cz> SUSE Labs, CR -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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