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mm: shmem: use signed int for version handling in casefold option

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Fixes an issue where the use of an unsigned data type in
`shmem_parse_opt_casefold()` caused incorrect evaluation of negative
conditions.

Link: https://lkml.kernel.org/r/20250111-unsignedcompare1601569-v3-1-c861b4221831@gmail.com
Fixes: 58e55efd6c ("tmpfs: Add casefold lookup support")
Reviewed-by: André Almeida <andrealmeid@igalia.com>
Reviewed-by: Gabriel Krisman Bertazi <gabriel@krisman.be>
Signed-off-by: Karan Sanghavi <karansanghvi98@gmail.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Hugh Dickens <hughd@google.com>
Cc: Shuah khan <skhan@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Karan Sanghavi 2025-01-11 15:31:30 +00:00 committed by Andrew Morton
parent 05c82ee363
commit b071cc3546
1 changed files with 1 additions and 1 deletions
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2
mm/shmem.c
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@ -4368,7 +4368,7 @@ static int shmem_parse_opt_casefold(struct fs_context *fc, struct fs_parameter *
bool latest_version)
{
struct shmem_options *ctx = fc->fs_private;
unsigned int version = UTF8_LATEST;
int version = UTF8_LATEST;
struct unicode_map *encoding;
char *version_str = param->string + 5;