Hi,
On Fri, Apr 08, 2005 at 06:55:50AM +0200, [email protected] wrote:
>
> Cc: <[email protected]>, <[email protected]>, <[email protected]>
>
> It's trivial for the resize option to auto-get the underlying device size, while
> it's harder for the user. I've copied the code from jfs.
>
> Since of the different reiserfs option parser (which does not use the superior
> match_token used by almost every other filesystem), I've had to use the
> "resize=auto" and not "resize" option to specify this behaviour. Changing the
> option parser to the kernel one wouldn't be bad but I've no time to do this
> cleanup in this moment.
do people really need it?
user-level utility reisize_reiserfs, being called w/o size argument,
calculates the device size and uses resize mount option with correct value.
> Btw, the mount(8) man page should be updated to include this option. Cc the
> relevant people, please (I hope I cc'ed the right people).
>
> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <[email protected]>
> ---
>
> linux-2.6.11-paolo/fs/reiserfs/super.c | 21 ++++++++++++++-------
> 1 files changed, 14 insertions(+), 7 deletions(-)
>
> diff -puN fs/reiserfs/super.c~reiserfs-resize-option-like-jfs-auto-get fs/reiserfs/super.c
> --- linux-2.6.11/fs/reiserfs/super.c~reiserfs-resize-option-like-jfs-auto-get 2005-04-07 20:37:58.000000000 +0200
> +++ linux-2.6.11-paolo/fs/reiserfs/super.c 2005-04-08 01:01:18.000000000 +0200
> @@ -889,12 +889,18 @@ static int reiserfs_parse_options (struc
> char * p;
>
> p = NULL;
> - /* "resize=NNN" */
> - *blocks = simple_strtoul (arg, &p, 0);
> - if (*p != '\0') {
> - /* NNN does not look like a number */
> - reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg);
> - return 0;
> + /* "resize=NNN" or "resize=auto" */
> +
> + if (!strcmp(arg, "auto")) {
> + /* From JFS code, to auto-get the size.*/
> + *blocks = s->s_bdev->bd_inode->i_size >> s->s_blocksize_bits;
> + } else {
> + *blocks = simple_strtoul (arg, &p, 0);
> + if (*p != '\0') {
> + /* NNN does not look like a number */
> + reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg);
> + return 0;
> + }
> }
> }
>
> @@ -903,7 +909,8 @@ static int reiserfs_parse_options (struc
> unsigned long val = simple_strtoul (arg, &p, 0);
> /* commit=NNN (time in seconds) */
> if ( *p != '\0' || val >= (unsigned int)-1) {
> - reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg); return 0;
> + reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg);
> + return 0;
> }
> *commit_max_age = (unsigned int)val;
> }
> _
--
Alex.
-
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