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UPSTREAM: f2fs: should use a temp extent_info for lookup

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Otherwise, __lookup_extent_tree() will override the given extent_info which will
be used by caller.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
(cherry picked from commit 22a341b43036415718f2d50f5f98b2f891fe17e9)
Change-Id: I5ddc08dd3d299f222b4b9b1334f2e675e37956b6
Signed-off-by: zhaoyuenan <amktiao030215@gmail.com>
This commit is contained in:
Jaegeuk Kim
2022-12-16 16:36:36 -08:00
committed by Bruno Martins
parent bfef390e6c
commit 82789d675e
1 changed files with 7 additions and 6 deletions
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13
fs/f2fs/extent_cache.c
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@@ -889,6 +889,7 @@ static int __get_new_block_age(struct inode *inode, struct extent_info *ei,
loff_t f_size = i_size_read(inode);
unsigned long long cur_blocks =
atomic64_read(&sbi->allocated_data_blocks);
struct extent_info tei = *ei; /* only fofs and len are valid */
/*
* When I/O is not aligned to a PAGE_SIZE, update will happen to the last
@@ -899,17 +900,17 @@ static int __get_new_block_age(struct inode *inode, struct extent_info *ei,
blkaddr == NEW_ADDR)
return -EINVAL;
if (__lookup_extent_tree(inode, ei->fofs, ei, EX_BLOCK_AGE)) {
if (__lookup_extent_tree(inode, ei->fofs, &tei, EX_BLOCK_AGE)) {
unsigned long long cur_age;
if (cur_blocks >= ei->last_blocks)
cur_age = cur_blocks - ei->last_blocks;
if (cur_blocks >= tei.last_blocks)
cur_age = cur_blocks - tei.last_blocks;
else
/* allocated_data_blocks overflow */
cur_age = ULLONG_MAX - ei->last_blocks + cur_blocks;
cur_age = ULLONG_MAX - tei.last_blocks + cur_blocks;
if (ei->age)
ei->age = __calculate_block_age(cur_age, ei->age);
if (tei.age)
ei->age = __calculate_block_age(cur_age, tei.age);
else
ei->age = cur_age;
ei->last_blocks = cur_blocks;