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charset="UTF-8" X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 404A7160005 X-Stat-Signature: e9nogbwm5cwq79z1jju4tr8ofg1fqbus X-HE-Tag: 1789951721-936786 X-HE-Meta: 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 yrVVYlbx 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: memfd_get_seals() is used by iommufd during preservation to make sure that he preserved memfd was sealed when it was mapped into iommufd. Since iommufd can be built as a module, export memfd_get_seals() to avoid linker error. Cc: Hugh Dickins Cc: Baolin Wang Cc: Andrew Morton Cc: linux-mm@kvack.org Acked-by: Pratyush Yadav (Google) Reviewed-by: Ankit Soni Signed-off-by: Samiullah Khawaja --- mm/memfd.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/mm/memfd.c b/mm/memfd.c index c708d92533f4..888ccf3778c7 100644 --- a/mm/memfd.c +++ b/mm/memfd.c @@ -6,6 +6,7 @@ * use by hugetlbfs as well as tmpfs. */ +#include #include #include #include @@ -310,12 +311,19 @@ int memfd_add_seals(struct file *file, unsigned int seals) return error; } +/** + * memfd_get_seals - Gets current seals on a memfd + * @file: struct file representing the memfd + * + * Returns seals if file is a memfd, otherwise returns -EINVAL + */ int memfd_get_seals(struct file *file) { unsigned int *seals = memfd_file_seals_ptr(file); return seals ? *seals : -EINVAL; } +EXPORT_SYMBOL_GPL(memfd_get_seals); long memfd_fcntl(struct file *file, unsigned int cmd, unsigned int arg) { -- 2.55.0.1082.g2b9226bbc0-goog