korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-15 16:24:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

bcachefs: clean up some dead fallocate code

Browse Source 
The have_reservation local variable in bch2_extent_fallocate() is
initialized to false and set to true further down in the function.
Between this two points, one branch of code checks for negative
value and one for positive, and nothing ever checks the variable
after it is set to true. Clean up some of the unnecessary logic and
code.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Brian Foster 2023-12-19 09:02:15 -05:00 committed by Kent Overstreet
parent a7dc10ce68
commit d8d819580a
1 changed files with 12 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
fs/bcachefs/io_misc.c
View File

@ -34,8 +34,7 @@ int bch2_extent_fallocate(struct btree_trans *trans,
struct open_buckets open_buckets = { 0 };
struct bkey_s_c k;
struct bkey_buf old, new;
unsigned sectors_allocated = 0;
bool have_reservation = false;
unsigned sectors_allocated = 0, new_replicas;
bool unwritten = opts.nocow &&
c->sb.version >= bcachefs_metadata_version_unwritten_extents;
int ret;
@ -50,11 +49,9 @@ int bch2_extent_fallocate(struct btree_trans *trans,
return ret;
sectors = min_t(u64, sectors, k.k->p.offset - iter->pos.offset);
if (!have_reservation) {
unsigned new_replicas =
max(0, (int) opts.data_replicas -
new_replicas = max(0, (int) opts.data_replicas -
(int) bch2_bkey_nr_ptrs_fully_allocated(k));
/*
* Get a disk reservation before (in the nocow case) calling
* into the allocator:
@ -64,14 +61,8 @@ int bch2_extent_fallocate(struct btree_trans *trans,
goto err_noprint;
bch2_bkey_buf_reassemble(&old, c, k);
}
if (have_reservation) {
if (!bch2_extents_match(k, bkey_i_to_s_c(old.k)))
goto err;
bch2_key_resize(&new.k->k, sectors);
} else if (!unwritten) {
if (!unwritten) {
struct bkey_i_reservation *reservation;
bch2_bkey_buf_realloc(&new, c, sizeof(*reservation) / sizeof(u64));
@ -118,8 +109,6 @@ int bch2_extent_fallocate(struct btree_trans *trans,
ptr->unwritten = true;
}
have_reservation = true;
ret = bch2_extent_update(trans, inum, iter, new.k, &disk_res,
0, i_sectors_delta, true);
err: