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btrfs: Remove redundant mirror_num arg

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The following callpath is always invoked with mirror_num set to 0, so
let's remove it as an argument and directly pass 0 to __do_redpage. No
functional change.

extent_readpages
  __extent_readpages
    __do_contiguous_readpages
      __do_readpage

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2017-10-24 11:50:39 +03:00 committed by David Sterba
parent ac244ef1da
commit d3fac6ba7d
1 changed files with 7 additions and 9 deletions
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16
fs/btrfs/extent_io.c
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@ -3094,7 +3094,7 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree,
u64 start, u64 end,
get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
struct bio **bio,
unsigned long *bio_flags,
u64 *prev_em_start)
{
@ -3116,7 +3116,7 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree,
for (index = 0; index < nr_pages; index++) {
__do_readpage(tree, pages[index], get_extent, em_cached, bio,
mirror_num, bio_flags, 0, prev_em_start);
0, bio_flags, 0, prev_em_start);
put_page(pages[index]);
}
}
@ -3125,8 +3125,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
struct page *pages[],
int nr_pages, get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
unsigned long *bio_flags,
struct bio **bio, unsigned long *bio_flags,
u64 *prev_em_start)
{
u64 start = 0;
@ -3147,7 +3146,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
__do_contiguous_readpages(tree, &pages[first_index],
index - first_index, start,
end, get_extent, em_cached,
bio, mirror_num, bio_flags,
bio, bio_flags,
prev_em_start);
start = page_start;
end = start + PAGE_SIZE - 1;
@ -3159,8 +3158,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
__do_contiguous_readpages(tree, &pages[first_index],
index - first_index, start,
end, get_extent, em_cached, bio,
mirror_num, bio_flags,
prev_em_start);
bio_flags, prev_em_start);
}
static int __extent_read_full_page(struct extent_io_tree *tree,
@ -4171,12 +4169,12 @@ int extent_readpages(struct extent_io_tree *tree,
if (nr < ARRAY_SIZE(pagepool))
continue;
__extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
&bio, 0, &bio_flags, &prev_em_start);
&bio, &bio_flags, &prev_em_start);
nr = 0;
}
if (nr)
__extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
&bio, 0, &bio_flags, &prev_em_start);
&bio, &bio_flags, &prev_em_start);
if (em_cached)
free_extent_map(em_cached);