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author | Jan Kara <jack@suse.cz> | 2013-02-05 13:59:56 +0100 |
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committer | Jan Kara <jack@suse.cz> | 2013-02-05 17:29:30 +0100 |
commit | 89b1f39eb4189de745fae554b0d614d87c8d5c63 (patch) | |
tree | b82261e16356581b153a3c28b21ce8b98f05670b /fs/dcache.c | |
parent | 99600051b04bc4ec8bd4d16a8bf993ca54042db6 (diff) | |
download | op-kernel-dev-89b1f39eb4189de745fae554b0d614d87c8d5c63.zip op-kernel-dev-89b1f39eb4189de745fae554b0d614d87c8d5c63.tar.gz |
udf: Fix bitmap overflow on large filesystems with small block size
For large UDF filesystems with 512-byte blocks the number of necessary
bitmap blocks is larger than 2^16 so s_nr_groups in udf_bitmap overflows
(the number will overflow for filesystems larger than 128 GB with
512-byte blocks). That results in ENOSPC errors despite the filesystem
has plenty of free space.
Fix the problem by changing s_nr_groups' type to 'int'. That is enough
even for filesystems 2^32 blocks (UDF maximum) and 512-byte blocksize.
Reported-and-tested-by: v10lator@myway.de
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/dcache.c')
0 files changed, 0 insertions, 0 deletions