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libceph, ceph: move ceph_calc_file_object_mapping() to striper.c

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ceph_calc_file_object_mapping() has nothing to do with osdmaps.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov 2018-02-17 10:41:20 +01:00
parent ed0811d2d2
commit 08c1ac508b
7 changed files with 43 additions and 44 deletions
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1
fs/ceph/addr.c
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@ -15,6 +15,7 @@
#include "mds_client.h"
#include "cache.h"
#include <linux/ceph/osd_client.h>
#include <linux/ceph/striper.h>
/*
* Ceph address space ops.

2
fs/ceph/ioctl.c
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@ -5,7 +5,7 @@
#include "super.h"
#include "mds_client.h"
#include "ioctl.h"
#include <linux/ceph/striper.h>
/*
* ioctls

5
include/linux/ceph/osdmap.h
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@ -5,7 +5,6 @@
#include <linux/rbtree.h>
#include <linux/ceph/types.h>
#include <linux/ceph/decode.h>
#include <linux/ceph/ceph_fs.h>
#include <linux/crush/crush.h>
/*
@ -280,10 +279,6 @@ bool ceph_osds_changed(const struct ceph_osds *old_acting,
const struct ceph_osds *new_acting,
bool any_change);
void ceph_calc_file_object_mapping(struct ceph_file_layout *l,
u64 off, u64 len,
u64 *objno, u64 *objoff, u32 *xlen);
int __ceph_object_locator_to_pg(struct ceph_pg_pool_info *pi,
const struct ceph_object_id *oid,
const struct ceph_object_locator *oloc,

4
include/linux/ceph/striper.h
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@ -7,6 +7,10 @@
struct ceph_file_layout;
void ceph_calc_file_object_mapping(struct ceph_file_layout *l,
u64 off, u64 len,
u64 *objno, u64 *objoff, u32 *xlen);
struct ceph_object_extent {
struct list_head oe_item;
u64 oe_objno;

1
net/ceph/osd_client.c
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@ -20,6 +20,7 @@
#include <linux/ceph/decode.h>
#include <linux/ceph/auth.h>
#include <linux/ceph/pagelist.h>
#include <linux/ceph/striper.h>
#define OSD_OPREPLY_FRONT_LEN 512

37
net/ceph/osdmap.c
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@ -4,7 +4,6 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <asm/div64.h>
#include <linux/ceph/libceph.h>
#include <linux/ceph/osdmap.h>
@ -2140,42 +2139,6 @@ bool ceph_osds_changed(const struct ceph_osds *old_acting,
return false;
}
/*
* Map a file extent to a stripe unit within an object.
* Fill in objno, offset into object, and object extent length (i.e. the
* number of bytes mapped, less than or equal to @l->stripe_unit).
*
* Example for stripe_count = 3, stripes_per_object = 4:
*
* blockno | 0 3 6 9 | 1 4 7 10 | 2 5 8 11 | 12 15 18 21 | 13 16 19
* stripeno | 0 1 2 3 | 0 1 2 3 | 0 1 2 3 | 4 5 6 7 | 4 5 6
* stripepos | 0 | 1 | 2 | 0 | 1
* objno | 0 | 1 | 2 | 3 | 4
* objsetno | 0 | 1
*/
void ceph_calc_file_object_mapping(struct ceph_file_layout *l,
u64 off, u64 len,
u64 *objno, u64 *objoff, u32 *xlen)
{
u32 stripes_per_object = l->object_size / l->stripe_unit;
u64 blockno; /* which su in the file (i.e. globally) */
u32 blockoff; /* offset into su */
u64 stripeno; /* which stripe */
u32 stripepos; /* which su in the stripe,
which object in the object set */
u64 objsetno; /* which object set */
u32 objsetpos; /* which stripe in the object set */
blockno = div_u64_rem(off, l->stripe_unit, &blockoff);
stripeno = div_u64_rem(blockno, l->stripe_count, &stripepos);
objsetno = div_u64_rem(stripeno, stripes_per_object, &objsetpos);
*objno = objsetno * l->stripe_count + stripepos;
*objoff = objsetpos * l->stripe_unit + blockoff;
*xlen = min_t(u64, len, l->stripe_unit - blockoff);
}
EXPORT_SYMBOL(ceph_calc_file_object_mapping);
/*
* Map an object into a PG.
*

37
net/ceph/striper.c
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@ -5,10 +5,45 @@
#include <linux/math64.h>
#include <linux/slab.h>
#include <linux/ceph/osdmap.h>
#include <linux/ceph/striper.h>
#include <linux/ceph/types.h>
/*
* Map a file extent to a stripe unit within an object.
* Fill in objno, offset into object, and object extent length (i.e. the
* number of bytes mapped, less than or equal to @l->stripe_unit).
*
* Example for stripe_count = 3, stripes_per_object = 4:
*
* blockno | 0 3 6 9 | 1 4 7 10 | 2 5 8 11 | 12 15 18 21 | 13 16 19
* stripeno | 0 1 2 3 | 0 1 2 3 | 0 1 2 3 | 4 5 6 7 | 4 5 6
* stripepos | 0 | 1 | 2 | 0 | 1
* objno | 0 | 1 | 2 | 3 | 4
* objsetno | 0 | 1
*/
void ceph_calc_file_object_mapping(struct ceph_file_layout *l,
u64 off, u64 len,
u64 *objno, u64 *objoff, u32 *xlen)
{
u32 stripes_per_object = l->object_size / l->stripe_unit;
u64 blockno; /* which su in the file (i.e. globally) */
u32 blockoff; /* offset into su */
u64 stripeno; /* which stripe */
u32 stripepos; /* which su in the stripe,
which object in the object set */
u64 objsetno; /* which object set */
u32 objsetpos; /* which stripe in the object set */
blockno = div_u64_rem(off, l->stripe_unit, &blockoff);
stripeno = div_u64_rem(blockno, l->stripe_count, &stripepos);
objsetno = div_u64_rem(stripeno, stripes_per_object, &objsetpos);
*objno = objsetno * l->stripe_count + stripepos;
*objoff = objsetpos * l->stripe_unit + blockoff;
*xlen = min_t(u64, len, l->stripe_unit - blockoff);
}
EXPORT_SYMBOL(ceph_calc_file_object_mapping);
/*
* Return the last extent with given objno (@object_extents is sorted
* by objno). If not found, return NULL and set @add_pos so that the