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ore: Make ore_calc_stripe_info EXPORT_SYMBOL

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ore_calc_stripe_info is needed by exofs::export.c
for the layout calculations. Make it exportable

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
This commit is contained in:
Boaz Harrosh
2011-10-04 14:20:17 +02:00
parent 4b46c9f5cf
commit 611d7a5dc6
2 changed files with 6 additions and 5 deletions
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6
fs/exofs/ore.c
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@@ -57,9 +57,6 @@ MODULE_LICENSE("GPL");
* 3. Cache some havily used calculations that will be needed by users. * 3. Cache some havily used calculations that will be needed by users.
*/ */
static void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset,
struct ore_striping_info *si);
enum { BIO_MAX_PAGES_KMALLOC = enum { BIO_MAX_PAGES_KMALLOC =
(PAGE_SIZE - sizeof(struct bio)) / sizeof(struct bio_vec),}; (PAGE_SIZE - sizeof(struct bio)) / sizeof(struct bio_vec),};
@@ -409,7 +406,7 @@ EXPORT_SYMBOL(ore_check_io);
* *
* O = L % stripe_unit + N * stripe_unit + M * group_depth * stripe_unit * O = L % stripe_unit + N * stripe_unit + M * group_depth * stripe_unit
*/ */
static void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset, void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset,
struct ore_striping_info *si) struct ore_striping_info *si)
{ {
u32 stripe_unit = layout->stripe_unit; u32 stripe_unit = layout->stripe_unit;
@@ -443,6 +440,7 @@ static void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset,
si->group_length = T - H; si->group_length = T - H;
si->M = M; si->M = M;
} }
EXPORT_SYMBOL(ore_calc_stripe_info);
static int _add_stripe_unit(struct ore_io_state *ios, unsigned *cur_pg, static int _add_stripe_unit(struct ore_io_state *ios, unsigned *cur_pg,
unsigned pgbase, struct ore_per_dev_state *per_dev, unsigned pgbase, struct ore_per_dev_state *per_dev,

3
include/scsi/osd_ore.h
View File

@@ -146,6 +146,9 @@ static inline unsigned ore_io_state_size(unsigned numdevs)
/* ore.c */ /* ore.c */
int ore_verify_layout(unsigned total_comps, struct ore_layout *layout); int ore_verify_layout(unsigned total_comps, struct ore_layout *layout);
void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset,
struct ore_striping_info *si);
int ore_get_rw_state(struct ore_layout *layout, struct ore_components *comps, int ore_get_rw_state(struct ore_layout *layout, struct ore_components *comps,
bool is_reading, u64 offset, u64 length, bool is_reading, u64 offset, u64 length,
struct ore_io_state **ios); struct ore_io_state **ios);