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dm integrity: introduce rw_journal_sectors() 

Introduce a function rw_journal_sectors() that takes sector and length
as its arguments instead of a section and the number of sections.

This functions will be used in further patches.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mikulas Patocka 2019-04-29 14:57:19 +02:00 committed by Mike Snitzer
parent 88ad5d1eb1
commit 981e8a980d
1 changed files with 14 additions and 6 deletions
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20
drivers/md/dm-integrity.c
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@ -761,12 +761,12 @@ static void complete_journal_io(unsigned long error, void *context)
complete_journal_op(comp);
}
static void rw_journal(struct dm_integrity_c *ic, int op, int op_flags, unsigned section,
unsigned n_sections, struct journal_completion *comp)
static void rw_journal_sectors(struct dm_integrity_c *ic, int op, int op_flags,
unsigned sector, unsigned n_sectors, struct journal_completion *comp)
{
struct dm_io_request io_req;
struct dm_io_region io_loc;
unsigned sector, n_sectors, pl_index, pl_offset;
unsigned pl_index, pl_offset;
int r;
if (unlikely(dm_integrity_failed(ic))) {
@ -775,9 +775,6 @@ static void rw_journal(struct dm_integrity_c *ic, int op, int op_flags, unsigned
return;
}
sector = section * ic->journal_section_sectors;
n_sectors = n_sections * ic->journal_section_sectors;
pl_index = sector >> (PAGE_SHIFT - SECTOR_SHIFT);
pl_offset = (sector << SECTOR_SHIFT) & (PAGE_SIZE - 1);
@ -810,6 +807,17 @@ static void rw_journal(struct dm_integrity_c *ic, int op, int op_flags, unsigned
}
}
static void rw_journal(struct dm_integrity_c *ic, int op, int op_flags, unsigned section,
unsigned n_sections, struct journal_completion *comp)
{
unsigned sector, n_sectors;
sector = section * ic->journal_section_sectors;
n_sectors = n_sections * ic->journal_section_sectors;
rw_journal_sectors(ic, op, op_flags, sector, n_sectors, comp);
}
static void write_journal(struct dm_integrity_c *ic, unsigned commit_start, unsigned commit_sections)
{
struct journal_completion io_comp;