Release 4.14 drivers/md/raid1-10.c
// SPDX-License-Identifier: GPL-2.0
/* Maximum size of each resync request */
#define RESYNC_BLOCK_SIZE (64*1024)
#define RESYNC_PAGES ((RESYNC_BLOCK_SIZE + PAGE_SIZE-1) / PAGE_SIZE)
/* for managing resync I/O pages */
struct resync_pages {
void *raid_bio;
struct page *pages[RESYNC_PAGES];
};
static inline int resync_alloc_pages(struct resync_pages *rp,
gfp_t gfp_flags)
{
int i;
for (i = 0; i < RESYNC_PAGES; i++) {
rp->pages[i] = alloc_page(gfp_flags);
if (!rp->pages[i])
goto out_free;
}
return 0;
out_free:
while (--i >= 0)
put_page(rp->pages[i]);
return -ENOMEM;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ming Lei | 84 | 100.00% | 1 | 100.00% |
| Total | 84 | 100.00% | 1 | 100.00% |
static inline void resync_free_pages(struct resync_pages *rp)
{
int i;
for (i = 0; i < RESYNC_PAGES; i++)
put_page(rp->pages[i]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ming Lei | 38 | 100.00% | 1 | 100.00% |
| Total | 38 | 100.00% | 1 | 100.00% |
static inline void resync_get_all_pages(struct resync_pages *rp)
{
int i;
for (i = 0; i < RESYNC_PAGES; i++)
get_page(rp->pages[i]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ming Lei | 38 | 100.00% | 1 | 100.00% |
| Total | 38 | 100.00% | 1 | 100.00% |
static inline struct page *resync_fetch_page(struct resync_pages *rp,
unsigned idx)
{
if (WARN_ON_ONCE(idx >= RESYNC_PAGES))
return NULL;
return rp->pages[idx];
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ming Lei | 37 | 100.00% | 1 | 100.00% |
| Total | 37 | 100.00% | 1 | 100.00% |
/*
* 'strct resync_pages' stores actual pages used for doing the resync
* IO, and it is per-bio, so make .bi_private points to it.
*/
static inline struct resync_pages *get_resync_pages(struct bio *bio)
{
return bio->bi_private;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ming Lei | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
/* generally called after bio_reset() for reseting bvec */
static void md_bio_reset_resync_pages(struct bio *bio, struct resync_pages *rp,
int size)
{
int idx = 0;
/* initialize bvec table again */
do {
struct page *page = resync_fetch_page(rp, idx);
int len = min_t(int, size, PAGE_SIZE);
/*
* won't fail because the vec table is big
* enough to hold all these pages
*/
bio_add_page(bio, page, len, 0);
size -= len;
} while (idx++ < RESYNC_PAGES && size > 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ming Lei | 80 | 100.00% | 1 | 100.00% |
| Total | 80 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ming Lei | 325 | 99.69% | 2 | 66.67% |
| Greg Kroah-Hartman | 1 | 0.31% | 1 | 33.33% |
| Total | 326 | 100.00% | 3 | 100.00% |
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