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size_t needs a %z format string modifier instead of %l samples/vfs/test-list-all-mounts.c:152:39: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat] 152 | printf("mnt_uidmap[%lu]:\t%s\n", idx, idmap); | ~~~ ^~~ | %zu samples/vfs/test-list-all-mounts.c:161:39: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat] 161 | printf("mnt_gidmap[%lu]:\t%s\n", idx, idmap); | ~~~ ^~~ | %zu Fixes: fa204a65f1b6 ("samples/vfs: add STATMOUNT_MNT_{G,U}IDMAP") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20250224141406.1400864-1-arnd@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>