xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

f2fs: deallocate compressed pages when error happens

Browse Source 
[ Upstream commit 827f02842e40ea2e00f401e8f4cb1bccf3b8cd86 ]

In f2fs_write_multi_pages(), f2fs_compress_pages() allocates pages for
compression work in cc->cpages[]. Then, f2fs_write_compressed_pages() initiates
bio submission. But, if there's any error before submitting the IOs like early
f2fs_cp_error(), previously it didn't free cpages by f2fs_compress_free_page().
Let's fix memory leak by putting that just before deallocating cc->cpages.

Fixes: 4c8ff7095b ("f2fs: support data compression")
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jaegeuk Kim
2021-08-30 11:37:32 -07:00
committed by Greg Kroah-Hartman
parent 4b71928e5c
commit d04925fb8d
1 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
fs/f2fs/compress.c
View File

@@ -1308,12 +1308,6 @@ out_destroy_crypt:
for (--i; i >= 0; i--) for (--i; i >= 0; i--)
fscrypt_finalize_bounce_page(&cc->cpages[i]); fscrypt_finalize_bounce_page(&cc->cpages[i]);
for (i = 0; i < cc->nr_cpages; i++) {
if (!cc->cpages[i])
continue;
f2fs_compress_free_page(cc->cpages[i]);
cc->cpages[i] = NULL;
}
out_put_cic: out_put_cic:
kmem_cache_free(cic_entry_slab, cic); kmem_cache_free(cic_entry_slab, cic);
out_put_dnode: out_put_dnode:
@@ -1324,6 +1318,12 @@ out_unlock_op:
else else
f2fs_unlock_op(sbi); f2fs_unlock_op(sbi);
out_free: out_free:
for (i = 0; i < cc->nr_cpages; i++) {
if (!cc->cpages[i])
continue;
f2fs_compress_free_page(cc->cpages[i]);
cc->cpages[i] = NULL;
}
page_array_free(cc->inode, cc->cpages, cc->nr_cpages); page_array_free(cc->inode, cc->cpages, cc->nr_cpages);
cc->cpages = NULL; cc->cpages = NULL;
return -EAGAIN; return -EAGAIN;