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bcachefs: Add error handling for zlib_deflateInit2()

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In attempt_compress(), the return value of zlib_deflateInit2() needs to be
checked. A proper implementation can be found in  pstore_compress().

Add an error check and return 0 immediately if the initialzation fails.

Fixes: 986e9842fb ("bcachefs: Compression levels")
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Wentao Liang
2025-04-02 21:45:44 +08:00
committed by Kent Overstreet
parent a07c43e6c2
commit 9364f17ba4
1 changed files with 3 additions and 2 deletions
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5
fs/bcachefs/compress.c
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@@ -371,13 +371,14 @@ static int attempt_compress(struct bch_fs *c,
};
zlib_set_workspace(&strm, workspace);
zlib_deflateInit2(&strm,
if (zlib_deflateInit2(&strm,
compression.level
? clamp_t(unsigned, compression.level,
Z_BEST_SPEED, Z_BEST_COMPRESSION)
: Z_DEFAULT_COMPRESSION,
Z_DEFLATED, -MAX_WBITS, DEF_MEM_LEVEL,
Z_DEFAULT_STRATEGY);
Z_DEFAULT_STRATEGY) != Z_OK)
return 0;
if (zlib_deflate(&strm, Z_FINISH) != Z_STREAM_END)
return 0;