On Fri, Jan 02, 2015 at 06:41:23PM +0900, Namjae Jeon wrote:
> Add finsert command for fallocate FALLOC_FL_INSERT_RANGE flag.
>
> Signed-off-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
> Signed-off-by: Ashish Sangwan <a.sangwan@xxxxxxxxxxx>
> ---
Looks good...
Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>
> io/prealloc.c | 39 ++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 38 insertions(+), 1 deletion(-)
>
> diff --git a/io/prealloc.c b/io/prealloc.c
> index aba6b44..11b1e12 100644
> --- a/io/prealloc.c
> +++ b/io/prealloc.c
> @@ -37,6 +37,10 @@
> #define FALLOC_FL_ZERO_RANGE 0x10
> #endif
>
> +#ifndef FALLOC_FL_INSERT_RANGE
> +#define FALLOC_FL_INSERT_RANGE 0x20
> +#endif
> +
> static cmdinfo_t allocsp_cmd;
> static cmdinfo_t freesp_cmd;
> static cmdinfo_t resvsp_cmd;
> @@ -46,6 +50,7 @@ static cmdinfo_t zero_cmd;
> static cmdinfo_t falloc_cmd;
> static cmdinfo_t fpunch_cmd;
> static cmdinfo_t fcollapse_cmd;
> +static cmdinfo_t finsert_cmd;
> static cmdinfo_t fzero_cmd;
> #endif
>
> @@ -169,11 +174,14 @@ fallocate_f(
> int mode = 0;
> int c;
>
> - while ((c = getopt(argc, argv, "ckp")) != EOF) {
> + while ((c = getopt(argc, argv, "cikp")) != EOF) {
> switch (c) {
> case 'c':
> mode = FALLOC_FL_COLLAPSE_RANGE;
> break;
> + case 'i':
> + mode = FALLOC_FL_INSERT_RANGE;
> + break;
> case 'k':
> mode = FALLOC_FL_KEEP_SIZE;
> break;
> @@ -237,6 +245,25 @@ fcollapse_f(
> }
>
> static int
> +finsert_f(
> + int argc,
> + char **argv)
> +{
> + xfs_flock64_t segment;
> + int mode = FALLOC_FL_INSERT_RANGE;
> +
> + if (!offset_length(argv[1], argv[2], &segment))
> + return 0;
> +
> + if (fallocate(file->fd, mode,
> + segment.l_start, segment.l_len)) {
> + perror("fallocate");
> + return 0;
> + }
> + return 0;
> +}
> +
> +static int
> fzero_f(
> int argc,
> char **argv)
> @@ -345,6 +372,16 @@ prealloc_init(void)
> _("de-allocates space and eliminates the hole by shifting extents");
> add_command(&fcollapse_cmd);
>
> + finsert_cmd.name = "finsert";
> + finsert_cmd.cfunc = finsert_f;
> + finsert_cmd.argmin = 2;
> + finsert_cmd.argmax = 2;
> + finsert_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
> + finsert_cmd.args = _("off len");
> + finsert_cmd.oneline =
> + _("creates new space for writing within file by shifting extents");
> + add_command(&finsert_cmd);
> +
> fzero_cmd.name = "fzero";
> fzero_cmd.cfunc = fzero_f;
> fzero_cmd.argmin = 2;
> --
> 1.7.11-rc0
>
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