Messages in this thread | | | Date | Fri, 21 Nov 2003 11:45:13 -0800 | From | Andrew Morton <> | Subject | Re: DIRECT IO for ext3/ext2. |
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<dhruv.anand@wipro.com> wrote: > > Thanks for your reply. I looked into the boundary alignment issue. > Observed something strange happening; > > I wrote my own kernel module and then; > 1. retrieved the block size = 4096 using block_size(struct block_device > *bdev) > 2. in the user application i did a lseek by 4906 (block size seek) > 3. then found the address of the variable i wanted to read into, to be > block > size aligned.
O_DIRECT works - trust me ;)
Please grab
http://www.zip.com.au/~akpm/linux/patches/stuff/ext3-tools.tar.gz
There are a number of examples in there (odread.c is one).
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