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authorChao Yu <yuchao0@huawei.com>2021-05-10 12:30:32 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2021-05-12 00:48:12 +0300
commit8bfbfb0ddd706b1ce2e89259ecc45f192c0ec2bf (patch)
tree1c2a7aa736f11f1080c1e9782a28a4476859dd06 /fs
parenta949dc5f2c5cfe0c910b664650f45371254c0744 (diff)
downloadlinux-8bfbfb0ddd706b1ce2e89259ecc45f192c0ec2bf.tar.xz
f2fs: compress: fix to assign cc.cluster_idx correctly
In f2fs_destroy_compress_ctx(), after f2fs_destroy_compress_ctx(), cc.cluster_idx will be cleared w/ NULL_CLUSTER, f2fs_cluster_blocks() may check wrong cluster metadata, fix it. Fixes: 4c8ff7095bef ("f2fs: support data compression") Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/f2fs/compress.c17
-rw-r--r--fs/f2fs/data.c6
-rw-r--r--fs/f2fs/f2fs.h2
3 files changed, 13 insertions, 12 deletions
diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 79348bc56e35..925a5ca3744a 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -145,13 +145,14 @@ int f2fs_init_compress_ctx(struct compress_ctx *cc)
return cc->rpages ? 0 : -ENOMEM;
}
-void f2fs_destroy_compress_ctx(struct compress_ctx *cc)
+void f2fs_destroy_compress_ctx(struct compress_ctx *cc, bool reuse)
{
page_array_free(cc->inode, cc->rpages, cc->cluster_size);
cc->rpages = NULL;
cc->nr_rpages = 0;
cc->nr_cpages = 0;
- cc->cluster_idx = NULL_CLUSTER;
+ if (!reuse)
+ cc->cluster_idx = NULL_CLUSTER;
}
void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page)
@@ -1034,7 +1035,7 @@ retry:
ret = f2fs_read_multi_pages(cc, &bio, cc->cluster_size,
&last_block_in_bio, false, true);
f2fs_put_rpages(cc);
- f2fs_destroy_compress_ctx(cc);
+ f2fs_destroy_compress_ctx(cc, true);
if (ret)
goto out;
if (bio)
@@ -1061,7 +1062,7 @@ retry:
release_and_retry:
f2fs_put_rpages(cc);
f2fs_unlock_rpages(cc, i + 1);
- f2fs_destroy_compress_ctx(cc);
+ f2fs_destroy_compress_ctx(cc, true);
goto retry;
}
}
@@ -1094,7 +1095,7 @@ release_and_retry:
unlock_pages:
f2fs_put_rpages(cc);
f2fs_unlock_rpages(cc, i);
- f2fs_destroy_compress_ctx(cc);
+ f2fs_destroy_compress_ctx(cc, true);
out:
return ret;
}
@@ -1130,7 +1131,7 @@ bool f2fs_compress_write_end(struct inode *inode, void *fsdata,
set_cluster_dirty(&cc);
f2fs_put_rpages_wbc(&cc, NULL, false, 1);
- f2fs_destroy_compress_ctx(&cc);
+ f2fs_destroy_compress_ctx(&cc, false);
return first_index;
}
@@ -1350,7 +1351,7 @@ unlock_continue:
f2fs_put_rpages(cc);
page_array_free(cc->inode, cc->cpages, cc->nr_cpages);
cc->cpages = NULL;
- f2fs_destroy_compress_ctx(cc);
+ f2fs_destroy_compress_ctx(cc, false);
return 0;
out_destroy_crypt:
@@ -1512,7 +1513,7 @@ write:
err = f2fs_write_raw_pages(cc, submitted, wbc, io_type);
f2fs_put_rpages_wbc(cc, wbc, false, 0);
destroy_out:
- f2fs_destroy_compress_ctx(cc);
+ f2fs_destroy_compress_ctx(cc, false);
return err;
}
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 96f1a354f89f..33e56ae84e35 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2287,7 +2287,7 @@ static int f2fs_mpage_readpages(struct inode *inode,
max_nr_pages,
&last_block_in_bio,
rac != NULL, false);
- f2fs_destroy_compress_ctx(&cc);
+ f2fs_destroy_compress_ctx(&cc, false);
if (ret)
goto set_error_page;
}
@@ -2332,7 +2332,7 @@ next_page:
max_nr_pages,
&last_block_in_bio,
rac != NULL, false);
- f2fs_destroy_compress_ctx(&cc);
+ f2fs_destroy_compress_ctx(&cc, false);
}
}
#endif
@@ -3033,7 +3033,7 @@ next:
}
}
if (f2fs_compressed_file(inode))
- f2fs_destroy_compress_ctx(&cc);
+ f2fs_destroy_compress_ctx(&cc, false);
#endif
if (retry) {
index = 0;
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 044878866ca3..c83d90125ebd 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -3956,7 +3956,7 @@ struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc);
void f2fs_decompress_end_io(struct decompress_io_ctx *dic, bool failed);
void f2fs_put_page_dic(struct page *page);
int f2fs_init_compress_ctx(struct compress_ctx *cc);
-void f2fs_destroy_compress_ctx(struct compress_ctx *cc);
+void f2fs_destroy_compress_ctx(struct compress_ctx *cc, bool reuse);
void f2fs_init_compress_info(struct f2fs_sb_info *sbi);
int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi);
void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi);